beatandraise : SEC Filings Research with AI

beatandraise.com

2.2.0.25truefalse009160 - Disclosure - Summarized Financial Information of Capital Holdings (Details)truefalseIn Millions, unless otherwise specifiedfalse1falsefalseUSDfalsefalse10/1/2010 - 12/31/2010 USD ($) USD ($) / shares $c00408http://www.sec.gov/CIK0000753308duration2010-10-01T00:00:002010-12-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli 0u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDfalse false7/1/2010 - 9/30/2010 USD ($) / shares USD ($) $c00180http://www.sec.gov/CIK0000753308duration2010-07-01T00:00:002010-09-30T00:00:00u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u000Standardhttp://www.xbrl.org/2003/iso4217USDiso4 2170USDUSD$3falsefalseUSDfalsefalse4/1/2010 - 6/30/2010 USD ($) USD ($) / shares $c00175http://www.sec.gov/CIK0000753308duration2010-04-01T00:00:002010-06-30T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli 0USDUSD$4falsefalseUSDfalsefalse1/1/2010 - 3/31/2010 USD ($) / shares USD ($) $c00177http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-03-31T00:00:00u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u001Standardhttp://www.xbrl.org/2003/instancepurexb rli0u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$5falsefalseUSDfalse false10/1/2009 - 12/31/2009 USD ($) / shares USD ($) $c00409http://www.sec.gov/CIK0000753308duration2009-10-01T00:00:002009-12-31T00:00:00u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u000Standardhttp://www.xbrl.org/2003/iso4217USDiso4 2170u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$6falsefalseUSDfalse false7/1/2009 - 9/30/2009 USD ($) / shares USD ($) $c00181http://www.sec.gov/CIK0000753308duration2009-07-01T00:00:002009-09-30T00:00:00u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u000Standardhttp://www.xbrl.org/2003/iso4217USDiso4 2170USDUSD$7falsefalseUSDfalsefalse4/1/2009 - 6/30/2009 USD ($) / shares USD ($) $c00176http://www.sec.gov/CIK0000753308duration2009-04-01T00:00:002009-06-30T00:00:00u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u000Standardhttp://www.xbrl.org/2003/iso4217USDiso4 2170USDUSD$8falsefalseUSDfalsefalse1/1/2009 - 3/31/2009 USD ($) / shares USD ($) $c00178http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-03-31T00:00:00u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u000Standardhttp://www.xbrl.org/2003/iso4217USDiso4 2170u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$9falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $c00323http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-12-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u001Standardhttp://www.xb rl.org/2003/instancepurexbrli0u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u004Standardhttp://nexteraenergyresources.com/20101231mWnee0USDUSD$10falsefalseUSDfalsefalse1/1/2009 - 12/31/2009 USD ($) USD ($) / shares $c00022http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-12-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0u003Dividehttp://www.xbrl. org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$11falsefalseUSDfalsefalse1/1/2008 - 12/31/2008 USD ($) USD ($) / shares $c00000http://www.sec.gov/CIK0000753308duration2008-01-01T00:00:002008-12-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli 0u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0nee_SummarizedFinancialInformationOfCapitalHoldingsDetailsAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefals efalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseSummarized Financial Information of Capital Holdings [Details] [Abstract]3false0us-gaap_EquityMethodInvestmentOwnershipPercentageus-gaaptruenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse1.001.00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalse5falsetruefalse00falsefalsefalsefalsefalse6falsetruefalse00falsefalsefalsefalsefalse7falsetruefalse00falsefalsefalsefalsefalse8falsetruefalse00falsefalsefalsefalsefalse9truetruefalse1.001.00falsefalsefalsefalsefalse10falsetruefalse00falsefalsefalsefalsefalse11falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureThe percentage of ownership of common stock or equit y participation in the investee accounted for under the equity method of accounting.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 18 -Subparagraph f Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -Subparagraph a (1) falsefalseCapital Holdings ownership percentage (in hundredths)4true0us-gaap_IncomeStatementAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefal sefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseConsolidated Statements of Income [Abstract]5false0us-gaap_Revenuesus-gaaptruecreditduration

No definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse34130000003413[1],[2]falsetruefalsefalsefalse2truefalsefalse46910000004691[1],[2]falsetruefalsefalsefalse3truefalsefalse35910000003591[1],[2]falsetruefalsefalsefalse4truefalsefalse36220000003622[1],[2]falsetruefalsefalsefalse5truefalsefalse36550000003655[1],[2]falsetruefalsefalsefalse6truefalsefalse44730000004473[1],[2]falsetruefalsefalsefalse7truefalsefalse38110000003811[1],[2]falsetruefalsefalsefalse8truefalsefalse37050000003705[1],[2]falsetruefalsefalsefalse9truefalsefalse1531700000015317falsetruefalsefalsefalse10truefalsefalse1564300000015643falsetruefalsefalsefalse11truefalsefalse1641000000016410falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseOperating revenues6false0us-gaap_OperatingExpensesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse 00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-12074000000-12074falsefalsefalsefalsefalse10truefalsefalse-13049000000-13049falsefalsefalsefalsefalse11truefalsefalse-13585000000-13585falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryGenerally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.No authoritative reference available.falsefalseOpe rating expenses7false0nee_InterestExpenseAggregateExpensesneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse0 0falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-979000000-979falsefalsefalsefalsefalse10truefalsefalse-849000000-849falsefalsefalsefalsefalse11truefalsefalse-813000000-813falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseInterest expense8false0nee_OtherIncomeDeductionsNetneefalsedebitdurationTotalOtherDeductionsNet minus InterestExpenseAggregateExpensesfalsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefal sefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse225000000225falsefalsefalsefals efalse10truefalsefalse197000000197falsefalsefalsefalsefalse11truefalsefalse7700000077falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotalOtherDeductionsNet minus InterestExpenseAggregateExpensesNo authoritative reference available.falsefalseOther income (deductions) - net9false0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomesticus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse24890000002489falsefalsefalsefalsefalse10truefalsefalse19420000001942falsefalsefalsefalsefalse11truefalsefalse20890000002089falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of earnings (loss) from continuing operations before income taxes that is attributable to domestic operations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 falsefalseIncome (loss) before income taxes10false0us-gaap_IncomeTaxExpenseBenefitus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalse false532000000532[3]falsefalsefalsefalsefalse10truefalsefalse327000000327[3]falsefalsefalsefalsefalse11truefalsefalse450000000450[3]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b falsefalseIncome tax expense (benefit)11false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse263000000263[1],[2]falsefalsefalsefalsefalse2truefalsefalse720000000720[1],[2]falsefalsefalsefalsefalse3truefalsefalse417000000417[1],[2]falsefalsefalsefalsefalse4truefalsefalse556000000556[1],[2]falsefalsefalsefalsefalse5truefalsefalse349000000349[1],[2]falsefalsefalsefalsefalse6truefalsefalse533000000533[1],[2]falsefalsefalsefalsefalse7truefalsefalse370000000370[1],[2]falsefalsefalsefalsefalse8truefalsefalse364000000364[1],[2]falsefalsefalsefalsefalse9truefalsefalse19570000001957falsefalsefalsefalsefalse10truefalsefalse16150000001615falsefalsefalsefalsefalse11truefalsefalse16390000001639falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not pr esent consolidated financial statements, the amount of profit or loss for the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalseNet income (loss)12true0us-gaap_PropertyPlantAndEquipmentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefals e00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalsePROPERTY, PLANT AND EQUIPMENT [Abstract]13false0us-gaap_PropertyPlantAndEquipmentGrossus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse5422100000054221falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefal sefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse5016900000050169falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalse falsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse5422100000054221falsefalsefalsefalsefalse10truefalsefalse5016900000050169falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount at the balance sheet date for long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, physical structures, machinery, vehicles, furniture, computer equipment, construction in progress, and similar items. Amount does not include depreciation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 falsefalseElectric utility plant in service and other property14false0nee_AccumulatedDepreciationAndAmortizationneefalsecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-15146000000-15146falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3f alsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse-14091000000-14091falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9t ruefalsefalse-15146000000-15146falsefalsefalsefalsefalse10truefalsefalse-14091000000-14091falsefalsefalsefalsefalse11truefalsefalse-13117000000-13117falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseLess accumulated depreciation and amortization15false0us-gaap_PropertyPlantAndEquipmentNetus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse3907500000039075falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse3607800000036078falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse3907500000039075falsefalsefalsefalsefalse10truefalsefalse3607800000036078falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, and production equipment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 falsefalseTotal property, plant and equipment - net16true0us-gaap_AssetsCurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalse< /IsRatio>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCURRENT ASSETS [Abstract]17false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse302000000302falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefal sefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse238000000238falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefals efalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse302000000302falsefalsefalse falsefalse10truefalsefalse238000000238falsefalsefalsefalsefalse11truefalsefalse535000000535falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original m aturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents18false0nee_ReceivablesneefalsedebitinstantAccountsReceivableNetCurrent plus OtherReceivablesNetfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse25820000002582falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalse< /IsRatio>false00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse22470000002247falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalse false00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse25820000002582falsefalsefalsefalsefalse10truefalsefalse22470000002247falsefalsefalsefalsefalse11false falsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccountsReceivableNetCurrent plus OtherReceivablesNetNo authoritative reference available.falsefalseReceivables19false0nee_OtherCurrentAssetsneefalsedebitinstantAssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivablesfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse23740000002374falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse18520000001852< CurrencyCode />falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse23740000002374 falsefalsefalsefalsefalse10truefalsefalse18520000001852falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivablesNo authoritative reference available.falsefalseOther20false0us-gaap_AssetsCurrentus-gaaptruedebitinstantNo definition av ailable.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse52580000005258falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse43370000004337falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse52580000005258falsefalsefalsefalsefalse10truefalsefalse43370000004337falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefa lseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 9 -Article 5 falsefalseTotal current assets21true0us-gaap_OtherAssetsNoncurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalse false00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse 00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseOTHER ASSETS [Abstract]22false0us-gaap_EquityMethodInvestmentsus-gaaptruedebitinstantNo def inition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment losses recognized.No authoritative reference available.falsefalseInvestment in subsidiaries23false0us-gaap_OtherAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse86610000008661falsefalsefalsefals efalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse80430000008043falsefalsefalsefal sefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse86610000008661falsefalsefalsefa lsefalse10truefalsefalse80430000008043falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of assets not otherwise specified in the taxonomy. Also serves as the sum of assets not individually reported in the financial statements, or not separately disclosed in notes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 7 falsefalseOther24false0us-gaap_AssetsNoncurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse86610000008661falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse80430000008043falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse86610000008661falsefalsefalsefalsefalse10truefalsefalse80430000008043falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 falsefalseTotal other assets25false0us-gaap_Assetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse5299400000052994falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefals e00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse4845800000048458falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsef alse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse5299400000052994falsefalsefalsefalsefalse10truefalsefalse4845800000048458falsefalsefalsefalsefalse11truefalsefalse4482100000044821falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 falsefalseTOTAL ASSETS26true0nee_TotalCapitalizationAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse 00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCAPITALIZATION [Abstract]27false0nee_TotalCommonShareholdersEquityneefalsenainstantNo definition avai lable.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1446100000014461falsefalsefalsefalsefalse 2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1296700000012967falsefalsefalsefalsefa lse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1446100000014461falsefalsefalsefalsefalse10truefalsefalse1296700000012967falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseCommon shareholders' equity28false0us-gaap_LongTermDebtNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1801300000018013falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1630000000016300falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1801300000018013falsefalsefalsefalsefalse10truefalsefalse1630000000016300falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 falsefalseLong-term debt29false0nee_TotalCapitalizationneefalsenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse3247400000032474falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefals e2926700000029267falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsef alse3247400000032474falsefalsefalsefalsefalse10truefalsefalse2926700000029267falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseTotal capitalization30true0us-gaap_LiabilitiesCurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalse falsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCURRENT LIABILITIES [Abstract]31false0nee_DebtDueWithinOneYearneefalsecreditinstantCommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrentfalsefalsefalsefalsefalsef alsefalsefalsefalsefalseverboselabel1truefalsefalse28090000002809falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse25890000002589falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse28090000002809falsefalsefalsefalsefalse10truefalsefalse25890000002589falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCommercialPaper plus Not esPayableAsOfBalanceSheetDate plus LongTermDebtCurrentNo authoritative reference available.falsefalseDebt due within one year32false0us-gaap_AccountsPayableCurrentAndNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse11240000001124falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalse falsefalse5truefalsefalse992000000992falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalse< hasSegments>falsefalse9truefalsefalse11240000001124falsefalsefalsefalsefalse10truefalsefalse992000000992falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 falsefalseAccounts payable33false0nee_OtherCurrentLiabilitiesneefalsecreditinstantLiabilitiesCurrent minus CondensedFinancialStatementsDebtDueWithinOneYear minus AccountsPayableCurrentAndNoncurrentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse29710000002971falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse28680000002868falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse29710000002971falsefalsefalsefalsefalse10truefalsefalse28680000002868falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryLiabilitiesCurrent minus CondensedFinancialStatementsDebtDueWithinOneYear minus AccountsPayableCurrentAndNoncurrentNo authoritative reference available.falsefalseOther34false0us-gaap_LiabilitiesCurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse69040000006904falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse64490000006449falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse69040000006904falsefalsefalsefalsefalse10truefalsefalse64490000006449falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 21 -Article 5 falsefalseTotal current liabilities35true0us-gaap_LiabilitiesNoncurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalse false00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefal se00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseOTHER LIABILITIES AND DEFERRED CREDITS [Abstract]36false0us-gaap_AssetRetirementObligationsNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse16390000001639falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse24180000002418falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse16390000001639falsefalsefalsefalsefalse10truefalsefalse24180000002418falsefalsefalsefalsefalse11truefalsefalse22830000002283falsefalsef alsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNoncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 3, 10, 22 falsefalseAsset retirement obligations37false0us-gaap_DeferredTaxLiabilitiesNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse51090000005109falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefal sefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse48600000004860falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefa lsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse51090000005109falsefalsefalsefalsefalse10truefalsefalse48600000004860falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryRepresents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A noncurrent taxable temporary difference is a difference between the tax basis and the carrying amount of a noncurrent asset or liability in the financial statements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise shall separate deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets shall be classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, shall be classified according to the expected reversal date of the temporary difference.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 41, 42 falsefalseAccumulated deferred income taxes38false0us-gaap_RegulatoryLiabilitiesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalse< DisplayZeroAsNone>false42590000004259falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalse false31820000003182falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse42590000004259falsefalsefalsefalsefalse10truefalsefalse31820000003182falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the periodReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 falsefalseRegulatory liabilities39false0us-gaap_OtherLiabilitiesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse26090000002609falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse22820000002282falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse26090000002609falsefalsefalsefalsefalse10truefalsefalse22820000002282falsefalsefalsefalsefalse11falsefal sefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of liabilities not otherwise specified in the taxonomy. Also serves as the sum of liabilities not individually reported in the financial statements, or not separately disclosed in notes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 9 falsefalseOther40false0us-gaap_LiabilitiesNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1361600000013616falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsef alse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1274200000012742falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefals e1361600000013616falsefalsefalsefalsefalse10truefalsefalse1274200000012742falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal obligations incurred as part of normal operations that is expected to be repaid beyond the following twelve months or one business cycle.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22, 23, 24, 25, 26, 27 -Article 5 falsefalseTotal other liabilities and deferred credits41false0us-gaap_CommitmentsAndContingencies2009us-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefa lsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00 falsefalsefalsefalsefalse10falsefalsefalse00 falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRepresents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. This caption alerts the reader that one or more notes to the financial statements disclose pertinent information about the entity's commitments and contingencies.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 25 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 9 falsefalseCOMMITMENTS AND CONTINGENCIES42false0us-gaap_LiabilitiesAndStockholdersEquityus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse5299400000052994falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalse< /IsRatio>false4845800000048458falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefal sefalse5299400000052994falsefalsefalsefalsefalse10truefalsefalse4845800000048458falsefalsefalsefalsefalse11false falsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of all Liabilities and Stockholders' Equity items.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 32 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 25 -Article 7 falsefalseTOTAL CAPITALIZATION AND LIABILITIES43true0us-gaap_StatementOfCashFlowsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCondensed Consolidating Statements of Cash Flows [Abstract]44false0us-gaap_NetCashProvidedByUsedInOperatingActivitiesus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalse< hasSegments>falsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse38340000003834falsefalsefalse falsefalse10truefalsefalse44630000004463falsefalsefalsefalsefalse11truefalsefalse34030000003403falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNET CASH PROVIDED BY OPERATING ACTIVITIES45true0us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1fal sefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false< IsRatio>falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11false falsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM INVESTING ACTIVITIES [Abstract]46false0nee_CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchasesneefalsecreditdurationCapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00fa lsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-5846000000-5846falsefalsefalsefalsefalse10truefalsefalse-6006000000-6006falsefalsefalsefalsefalse11truefalsefalse-5236000000-5236falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus OtherCapitalExpendituresNo authoritative reference available.falsefalseCapital expenditures, independent power and other investments and nuclear fuel purchases47false0nee_CapitalContributionsneefalsecreditdurationcapital contribution to subsidiaryfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarycapital contribution to subsidiaryNo authoritative reference available.falsefalseCapital contribution to FPL48false0nee_CashGrantsUnderAmericanRecoveryAndReinvestmentActOf2009neefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00< NonNumericTextHeader />falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse588000000588falsefalsefalsefalsefalse10truefalsefalse100000000100falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseCash grants under the Recovery Act49false0us-gaap_PaymentsToAcquireOtherLoansAndLeasesHeldForInvestmentus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefal se5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse-500000000-500falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow from other loans and leases held-for-investment not otherwise defined in the taxonomy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 102 -Paragraph 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph a falsefalseFunding of loan50false0nee_OtherCashFlowsFromInvestingActivitiesNetneefalsedebitdurationNetCashProvidedByUsedInInvestingActivities minus...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false< IsRatio>falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefa lsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-26000000-26falsefalsefalsefalsefalse10truefalsefalse-29000000-29falsefalsefalsefalsefalse11truefalsefalse-72000000-72falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNetCashProvidedByUsedInInvestingActivities minus CondensedFinancialStatementsCapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases minus SaleOfIndependentPowerInvestmentsNo authoritative reference available.falsefalseOther - net51false0us-gaap_NetCashProvidedByUsedInInvestingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-5284000000-5284falsefalsefalsefalsefalse10truefalsefalse-5935000000-5935falsefalsefalsefalsefalse11truefalsefalse-5808000000 - -5808falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from investing activity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet Cash Provided By Used In Investing Activities52true0us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5fal sefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM FINANCING ACTIVITES [Abstract]53false0us-gaap_ProceedsFromIssuanceOfLongTermDebtus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsef alsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalse< /DisplayDateInUSFormat>falsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse37240000003724falsefalsefalse falsefalse10truefalsefalse32200000003220falsefalsefalsefalsefalse11truefalsefalse38270000003827falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b falsefalseIssuances of long-term debt54false0us-gaap_RepaymentsOfLongTermDebtus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefal se-769000000-769falsefalsefalsefalsefalse10truefalsefalse-1635000000-1635falsefalsefalsefalsefalse11truefalse< DisplayZeroAsNone>false-1358000000-1358falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b falsefalseRetirements of long-term debt55false0nee_SaleOfDifferentialMembershipInterestsneefalsenadurationThe cash inflow from the sale of membership interests.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1fa lsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse261000000261falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11true< IsRatio>falsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from the sale of membership interests.No authoritative reference available.falsefalseProceeds from sale of differential membership interests56false0us-ga ap_ProceedsFromRepaymentsOfShortTermDebtus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-1130000000-1130< IsIndependantCurrency>falsefalsefalsefalsefalse10truefalsefalse154000000154falsefalsefalsefalsefalse11truefalsefalse848000000848falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 falsefalseNet change in short-term debt57false0us-gaap_ProceedsFromIssuanceOfCommonStockus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefa lsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse308000000308falsefalsefalsefalsefalse10truefalsefalse198000000198falsefalsefalsefalsefalse11truefalsefalse4100000041falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from the additional capital contribution to the entity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a falsefalseIssuances of common stock - net58false0us-gaap_PaymentsOfDividendsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefals e-823000000-823falsefalsefalsefalsefalse10truefalsefalse-766000000-766falsefalsefalsefalsefalse11truefalsefalse-714000000-714falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow from the entity's earnings to the shareholders.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a falsefalseDividends on common stock59false0us-gaap_ProceedsFromPaymentsForOtherFinancingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5false falsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalse false00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-57000000-57falsefalsefalsefalsefalse10truefalsefalse40000004falsefalsefalsefalsefalse11true falsefalse60000006falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 falsefalseOther - net60false0us-gaap_NetCashProvidedByUsedInFinancingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefal se15140000001514falsefalsefalsefalsefalse10truefalsefalse11750000001175falsefalsefalsefalsefalse11truefalsefalse26500000002650falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from financing activity for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet cash provided by (used in) financing activities61false0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1fal sefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false< IsRatio>falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse6400000064falsefalsefalsefalsefalse10truefalsefalse-297000000-297falsefalsefalsefalsefalse11truefalsefalse245000000245falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net change between the beginning and ending balance of cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet increase (decrease) in cash and cash equivalents62false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3fa lsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse238000000238falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7fal sefalsefalse00falsefalsefalsefalsefalse8truefalsefalse535000000535falsefalsefalsefalsefalse9truefalsefalse238000000238falsefalsefalsefalsefalse10truefalsefalse535000000535falsefalsefalsefalsefalse11 truefalsefalse290000000290falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cas h equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into w ith others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents at beginning of year63false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1true< /IsNumeric>falsefalse302000000302falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3f alsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse238000000238falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7fa lsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse302000000302falsefalsefalsefalsefalse10truefalsefalse238000000238falsefalsefalsefalsefalse11truefalsefalse535000000535falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equiva lents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with othe rs, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents at end of year64false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/summarizedfinancialinformationofcapitalholdingsdetails1fa lsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalseUSDtruefalse{dei_LegalEntityAxis} : NextEra Energy (Guarantor) [Member] 1/1/2010 - 12/31/2010 USD ($) $c00373http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseNextEra Energy (Guarantor) [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ParentCompanyMemberdei_LegalEntityAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$13falsefalseUSDtruefalse{dei_LegalEntityAxis} : NextEra Energy (Guarantor) [Member] 1/1/2009 - 12/31/2009 USD ($) $c00051http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseNextEra Energy (Guarantor) [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ParentCompanyMemberdei_LegalEntityAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$14falsefalseUSDtruefalse{dei_LegalEntityAxis} : NextEra Energy (Guarantor) [Member] 1/1/2008 - 12/31/2008 USD ($) $c00018http://www.sec.gov/CIK0000753308duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseNextEra Energy (Guarantor) [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ParentCompanyMemberdei_LegalEntityAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseNextEra Energy (Guarantor) [Member]66true0us-gaap_IncomeStatementAbstractus-gaaptruenadurationNo definition available. falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4 falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6false falsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseConsolidated Statements of Income [Abstract]67false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00[1],[2]falsefalsefalsefalsefalse2falsefalsefalse00[1],[2]falsefalsefalsefalsefalse3falsefalsefalse00[1],[2]falsefalsefalsefalsefalse4falsefalsefalse00[1],[2]falsefalsefalsefalsefalse5falsefalsefalse00[1],[2]falsefalsefalsefalsefalse6falsefalsefalse00[1],[2]falsefalsefalsefalsefalse7falsefalsefalse00[1],[2]falsefalsefalsefalsefalse8falsefalsefalse00[1],[2]falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00< CurrencySymbol />falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, ins urance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseOperating revenues68false0us-gaap_OperatingExpensesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefals e00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-4000000-4falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryGenerally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.No authoritative reference available.falsefalseOperating expenses6 9false0nee_InterestExpenseAggregateExpensesneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00 falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-15000000-15falsefalsefalsefalsefalse10truefalsefalse-17000000-17falsefalsefalsefalsefalse11truefalsefalse-18000000-18falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseInterest expense70false0nee_OtherIncomeDeductionsNetneefalsedebitdurationTotalOtherDeductionsNet minus Inter estExpenseAggregateExpensesfalsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefal se2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse19470000001947falsefalsefalsefalsefalse10truefalsefalse16320000001632falsefalsefalsefalsefalse11truefalsefalse16630000001663falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotalOtherDeductionsNet minus InterestExpenseAggregateExpensesNo authoritative reference available.falsefalseOther income (deductions) - net71false0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomesticus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00 falsefalsefalsefalsefalse9truefalsefalse19280000001928falsefalsefalsefalsefalse10truefalsefalse16150000001615< NonNumbericText />falsefalsefalsefalsefalse11truefalsefalse16450000001645falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe p ortion of earnings (loss) from continuing operations before income taxes that is attributable to domestic operations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 falsefalseIncome (loss) before income taxes72false0us-gaap_IncomeTaxExpenseBenefitus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalse false-29000000-29falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse60000006falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b falsefalseIncome tax expense (benefit)73false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00[1],[2]falsefalsefalsefalsefalse2falsefalsefalse00[1],[2]falsefalsefalsefalsefalse3false falsefalse00[1],[2]falsefalsefalsefalsefalse4falsefalsefalse00[1],[2]falsefalsefalsefalsefalse5falsefalsefalse00[1],[2]falsefalsefalsefalsefalse6falsefalsefalse00[1],[2]falsefalsefalsefalsefalse7falsefalsefalse00[1],[2]falsefalsefalsefalsefalse8falsefalsefalse00[1],[2]falsefalsefalsefalsefalse9truefalsefalse19570000001957falsefalsefalsefalsefalse10truefalsefalse16150000001615falsefalsefalsefalsefalse11truefalsefalse16390000001639falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss fo r the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalseNet income (loss)74true0us-gaap_PropertyPlantAndEquipmentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefals e00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalsePROPERTY, PLANT AND EQUIPMENT [Abstract]75false0us-gaap_PropertyPlantAndEquipmentGrossus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse1900000019falsefalsefalsefals efalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse20000002falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1900000019falsefalsefalsefalsefalse10truefalsefalse20000002falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount at the balance sheet date for long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, physical structures, machinery, vehicles, furniture, computer equipment, construction in progress, and similar items. Amount does not include depreciation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 falsefalseElectric utility plant in service and other property76false0nee_AccumulatedDepreciationAndAmortizationneefalsecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefa lsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseLess accumulated depreciation and amortization77false0us-gaap_PropertyPlantAndEquipmentNetus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1900000019falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse20000002falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1900000019falsefalsefalsefalsefalse10truefalsefalse20000002falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, and production equipment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 falsefalseTotal property, plant and equipment - net78true0us-gaap_AssetsCurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalse< /IsRatio>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCURRENT ASSETS [Abstract]79false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefalse false6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefa lseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents80false0nee_ReceivablesneefalsedebitinstantAccountsReceivableNetCurrent plus OtherReceivablesNetfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse654000000654falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse453000000453falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalse false654000000654falsefalsefalsefalsefalse10truefalsefalse453000000453falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccountsReceivableNetCurrent plus OtherReceivablesNetNo authoritative reference available.falsefalseReceivables81false0nee_OtherCurrentAssetsneefalsedebitinstantAssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivablesfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse90000009 falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse40000004falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse90000009falsefalsefalsefalsefalse10truefalsefalse40000004falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivablesNo authoritative reference available.falsefalseOther82false0us-gaap_AssetsCurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse663000000663falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse457000000457falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse663000000663falsefalsefalsefalsefalse10truefalsefalse457000000457falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 9 -Article 5 falsefalseTotal current assets83true0us-gaap_OtherAssetsNoncurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalse false00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse 00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseOTHER ASSETS [Abstract]84false0us-gaap_EquityMethodInvestmentsus-gaaptruedebitinstantNo def inition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1415000000014150falsefalsefalsefalse false2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse 4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1278500000012785falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefa lse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1415000000014150falsefalsefalsefalsefalse10truefalsefalse1278500000012785falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment losses recognized.No authoritative reference available.falsefalseInvestment in subsidiaries85false0us-gaap_OtherAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse365000000365falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse557000000557falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse365000000365falsefalsefalsefalsefalse10truefalsefalse557000000557falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of assets not otherwise specified in the taxonomy. Also serves as the sum of assets not individually reported in the financial statements, or not separately disclosed in notes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 7 falsefalseOther86false0us-gaap_AssetsNoncurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1451500000014515falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1334200000013342falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefals e00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1451500000014515falsefalsefalsefalsefalse10truefalsefalse1334200000013342falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 falsefalseTotal other assets87false0us-gaap_Assetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1519700000015197falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefals e00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1380100000013801falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsef alse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1519700000015197falsefalsefalsefalsefalse10truefalsefalse1380100000013801falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 falsefalseTOTAL ASSETS88true0nee_TotalCapitalizationAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse 00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCAPITALIZATION [Abstract]89false0nee_TotalCommonShareholdersEquityneefalsenainstantNo definition avai lable.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1446100000014461falsefalsefalsefalsefalse 2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1296700000012967falsefalsefalsefalsefa lse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1446100000014461falsefalsefalsefalsefalse10truefalsefalse1296700000012967falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseCommon shareholders' equity90false0us-gaap_LongTermDebtNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00< IsIndependantCurrency>falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturiti es due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 falsefalseLong-term debt91false0nee_TotalCapitalizationneefalsenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1446100000014461falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefals e1296700000012967falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsef alse1446100000014461falsefalsefalsefalsefalse10truefalsefalse1296700000012967falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseTotal capitalization92true0us-gaap_LiabilitiesCurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalse falsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCURRENT LIABILITIES [Abstract]93false0nee_DebtDueWithinOneYearneefalsecreditinstantCommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrentfalsefalsefalsefalsefalsef alsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtC urrentNo authoritative reference available.falsefalseDebt due within one year94false0us-gaap_AccountsPayableCurrentAndNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse 7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 falsefalseAccounts payable95false0nee_OtherCurrentLiabilitiesneefalsecreditinstantLiabilitiesCurrent minus CondensedFinancialStatementsDebtDueWithinOneYear minus AccountsPayableCurrentAndNoncurrentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse352000000352falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse 5truefalsefalse417000000417falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse< /Cell>9truefalsefalse352000000352falsefalsefalsefalsefalse10truefalsefalse417000000417falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryLiabilitiesCurrent minus CondensedFinancialStatementsDebtDueWithinOneYear minus AccountsPayableCurrentAndNoncurrentNo authoritative reference available.falsefalseOther96false0us-gaap_LiabilitiesCurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse352000000352falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse417000000417falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse352000000352falsefalsefalsefalsefalse10truefalsefalse417000000417falsefalsefalsefalsefalse11falsefalsefalse00 falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 21 -Article 5 falsefalseTotal current liabilities97true0us-gaap_LiabilitiesNoncurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalse false00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefal se00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseOTHER LIABILITIES AND DEFERRED CREDITS [Abstract]98false0us-gaap_AssetRetirementObligationsNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefal sefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNoncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 3, 10, 22 falsefalseAsset retirement obligations99false0us-gaap_DeferredTaxLiabilitiesNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse5300000053falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse9400000094falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalse< DisplayZeroAsNone>false5300000053falsefalsefalsefalsefalse10truefalsefalse9400000094falsefalsefalsefalsefalse11falsefals efalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryRepresents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A noncurrent taxable temporary difference is a difference between the tax basis and the carrying amount of a noncurrent asset or liability in the financial s tatements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise shall separate deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets shall be classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, shall be classified according to the expected reversal date of the temporary difference.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 41, 42 falsefalseAccumulated deferred income taxes100false0us-gaap_RegulatoryLiabilitiesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalse false4600000046falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1600000016falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalse false00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse4600000046falsefalsefalsefalsefalse10truefalsefalse1600000016falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the periodReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 falsefalseRegulatory liabilities101false0us-gaap_OtherLiabilitiesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse285000000285falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse307000000307falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse285000000285falsefalsefalsefalsefalse10truefalsefalse307000000307falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of liabilities not otherwise specified in the taxonomy. Also serves as the sum of liabilities not individually reported in the financial statements, or not separately disclosed in notes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 9 falsefalseOther102false0us-gaap_LiabilitiesNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse384000000384falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefals e00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse417000000417falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse 00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse384000000384falsefalsefalsefalsefalse10truefalsefalse417000000417falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal obligations incurred as part of normal operations that is expected to be repaid beyond the following twelve months or one business cycle.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22, 23, 24, 25, 26, 27 -Article 5 falsefalseTotal other liabilities and deferred credits103false0us-gaap_CommitmentsAndContingencies2009us-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsef alsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalse< /IsRatio>false00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalse< DisplayZeroAsNone>false00 falsefalsefalsefalsefalse10falsefalsefalse00 falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRepresents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. This caption alerts the reader that one or more notes to the financial statements disclose pertinent information about the entity's commitments and contingencies.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 25 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 9 falsefalseCOMMITMENTS AND CONTINGENCIES104false0us-gaap_LiabilitiesAndStockholdersEquityus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1519700000015197falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalse false1380100000013801falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefa lsefalse1519700000015197falsefalsefalsefalsefalse10truefalsefalse1380100000013801falsefalsefalsefalsefalse11fals efalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of all Liabilities and Stockholders' Equity items.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 32 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 25 -Article 7 falsefalseTOTAL CAPITALIZATION AND LIABILITIES105true0us-gaap_StatementOfCashFlowsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCondensed Consolidating Statements of Cash Flows [Abstract]106false0us-gaap_NetCashProvidedByUsedInOperatingActivitiesus-gaaptruena durationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse11780000001178falsefalsefalsefalsefalse10truefalsefalse591000000591falsefalsefalsefalsefalse11truefalsefalse766000000766falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNET CASH PROVIDED BY OPERATING ACTIVITIES107true0us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1fa lsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM INVESTING ACTIVITIES [Abstract]108false0nee_CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchasesneefalsecreditdurationCapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00 falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00false falsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse-12000000-12false< /IsIndependantCurrency>falsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus OtherCapitalExpendituresNo authoritative reference available.falsefalseCapital expenditures, independent power and other investments and nuclear fuel purchases109false0nee_CapitalContributionsneefalsecreditdurationcapital contribution to subsidiaryfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalse falsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalse false4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-660000000-660falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse-75000000-75falsefalsefalsefals efalseMonetaryxbrli:monetaryItemTypemonetarycapital contribution to subsidiaryNo authoritative reference available.falsefalseCapital contribution to FPL110false0nee_CashGrantsUnderAmericanRecoveryAndReinvestmentActOf2009neefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseCash grants under the Recovery Act111false0us-gaap_PaymentsToAcquireOtherLoansAndLeasesHeldForInvestmentus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse< Cell>5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse 7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9 truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11 truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow from other loans and leases held-for-investment not otherwise defined in the taxonomy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 102 -Paragraph 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph a falsefalseFunding of loan112false0nee_OtherCashFlowsFromInvestingActivitiesNetneefalsedebitdurationNetCashProvidedByUsedInInvestingActivities minus...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsef alsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse-7000000-7falsefalsefalsefalsefalse11truefals efalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNetCashProvidedByUsedInInvestingActivities minus CondensedFinancialStatementsCapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases minus SaleOfIndependentPowerInvestmentsNo authoritative reference available.falsefalseOther - net113false0us-gaap_NetCashProvidedByUsedInInvestingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-660000000-660falsefalsefalsefalsefalse10truefalsefalse-7000000-7falsefalsefalsefalsefalse11truefalsefalse-87000000-87falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from investing activity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet Cash Provided By Used In Investing Activities114true0us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5fa lsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM FINANCING ACTIVITES [Abstract]115false0us-gaap_ProceedsFromIssuanceOfLongTermDebtus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefals efalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b falsefalseIssuances of long-term debt116false0us-gaap_RepaymentsOfLongTermDebtus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefa lse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b falsefalseRetirements of long-term debt117false0nee_SaleOfDifferentialMembershipInterestsneefalsenadurationThe cash inflow from the sale of membership interests.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1f alsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false< /IsNumeric>falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truef alsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from the sale of membership interests.No authoritative reference available.falsefalseProceeds from sale of differential membership interests118false0us-gaap_Proce edsFromRepaymentsOfShortTermDebtus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00 falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00false falsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 falsefalseNet change in short-term debt119false0us-gaap_ProceedsFromIssuanceOfCommonStockus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsef alsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalse< /IsRatio>false00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse308000000308falsefalsefalsefalsefalse10truefalsefalse198000000198falsefalsefalsefalsefalse11truefalsefalse4100000041falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from the additional capital contribution to the entity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a falsefalseIssuances of common stock - net120false0us-gaap_PaymentsOfDividendsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefal se-823000000-823falsefalsefalsefalsefalse10truefalsefalse-766000000-766falsefalsefalsefalsefalse11truefalsefalse-714000000-714falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow from the entity's earnings to the shareholders.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a falsefalseDividends on common stock121false0us-gaap_ProceedsFromPaymentsForOtherFinancingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefals efalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-3000000-3falsefalsefalsefalsefalse10truefalsefalse-16000000-16falsefalsefalsefalsefalse11truefalsefalse-6000000-6falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 falsefalseOther - net122false0us-gaap_NetCashProvidedByUsedInFinancingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefa lse-518000000-518falsefalsefalsefalsefalse10truefalsefalse-584000000-584falsefalsefalsefalsefalse11truefalsefalse-679000000-679falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from financing activity for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet cash provided by (used in) financing activities123false0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1fa lsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefa lsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net change between the beginning and ending balance of cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet increase (decrease) in cash and cash equivalents124false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3f alsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5false< /IsNumeric>falsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9true falsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as ma rketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents at beginning of year125false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1true falsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truef alsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalse< /IsRatio>false00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable s ecurities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regar d to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents at end of year126false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/summarizedfinancialinformationofcapitalholdingsdetails1f alsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false< /IsNumeric>falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse15falsefalseUSDtruefalse{dei_LegalEntityAxis} : Capital Holdings Consolidated [Member] 1/1/2010 - 12/31/2010 USD ($) $c00374http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseCapital Holdings Consolidated [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldinee_CapitalHoldingsConsolidatedMemberdei_LegalEntityAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$16falsefalseUSDtruefalse{dei_LegalEntityAxis} : Capital Holdings Consolidated [Member] 1/1/2009 - 12/31/2009 USD ($) $c00052http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseCapital Holdings Consolidated [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldinee_CapitalHoldingsConsolidatedMemberdei_LegalEntityAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$17falsefalseUSDtruefalse{dei_LegalEntityAxis} : Capital Holdings Consolidated [Member] 1/1/2008 - 12/31/2008 USD ($) $c00019http://www.sec.gov/CIK0000753308duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseCapital Holdings Consolidated [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldinee_CapitalHoldingsConsolidatedMemberdei_LegalEntityAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseCapital Holdings Consolidated [Member]128true0us-gaap_IncomeStatementAbstractus-gaaptruenadurationNo definition availabl e.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse< Id>4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6< /Id>falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8< IsNumeric>falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseConsolidated Statements of Income [Abstract]129false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00[1],[2]falsefalsefalsefalsefalse2falsefalsefalse00[1],[2]falsefalsefalsefalsefalse3falsefalsefalse00[1],[2]falsefalsefalsefalsefalse4falsefalsefalse00[1],[2]falsefalsefalsefalsefalse5falsefalsefalse00[1],[2]falsefalsefalsefalsefalse6falsefalsefalse00[1],[2]falsefalsefalsefalsefalse7falsefalsefalse00[1],[2]falsefalsefalsefalsefalse8falsefalsefalse00[1],[2]falsefalsefalsefalsefalse9truefalsefalse48430000004843falsefalsefalsefalsefalse10truefalsefalse41640000004164falsefalsefalsefalsefalse11truefalsefalse47700000004770falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during th e period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseOperating revenues130false0us-gaap_OperatingExpensesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefal se00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-3446000000-3446falsefalsefalsefalsefalse10truefalsefalse-3151000000-3151falsefalsefalsefalsefalse11truefalsefalse-3474000000-3474falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryGenerally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.No authoritative reference available.falsefalseOperati ng expenses131false0nee_InterestExpenseAggregateExpensesneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00< /RoundedNumericAmount>falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-618000000-618falsefalsefalsefalsefalse10truefalsefalse-531000000-531falsefalsefalsefalsefalse11truefalsefalse-479000000-479falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseInterest expense132false0nee_OtherIncomeDeductionsNetneefalsedebitdurationTotalOtherDeductionsNet minus InterestExpenseAggregateExpensesfalsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefal sefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse188000000188falsefalsefalsefals efalse10truefalsefalse160000000160falsefalsefalsefalsefalse11truefalsefalse4400000044falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotalOtherDeductionsNet minus InterestExpenseAggregateExpensesNo authoritative reference available.falsefalseOther income (deductions) - net133false0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomesticus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00< /RoundedNumericAmount>falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse967000000967falsefalsefalsefalsefalse10truefalsefalse642000000642falsefalsefalsefalsefalse11truefalsefalse861000000861falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of earnings (loss) from continuing operations before income taxes that is attributable to domestic operations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 falsefalseIncome (loss) before income taxes134false0us-gaap_IncomeTaxExpenseBenefitus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-19000000-19falsefalsefalsefalsefalse10truefalsefalse-145000000-145falsefalsefalsefalsefalse11truefalse< DisplayZeroAsNone>false20000002falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b falsefalseIncome tax expense (benefit)135false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00[1],[2]falsefalsefalsefalsefalse2falsefalsefalse00[1],[2]falsefalsefalsefalsefalse3fals efalsefalse00[1],[2]falsefalsefalsefalsefalse4falsefalsefalse00[1],[2]falsefalsefalsefalsefalse5falsefalsefalse00[1],[2]falsefalsefalsefalsefalse6falsefalsefalse00[1],[2]falsefalsefalsefalsefalse7falsefalsefalse00[1],[2]falsefalsefalsefalsefalse8falsefalsefalse00[1],[2]falsefalsefalsefalsefalse9truefalsefalse986000000986falsefalsefalsefalsefalse10truefalsefalse787000000787falsefalsefalsefalsefalse11truefalsefalse859000000859falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalseNet income (loss)136true0us-gaap_PropertyPlantAndEquipmentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefal se00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse< /DisplayZeroAsNone>00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalsePROPERTY, PLANT AND EQUIPMENT [Abstract]137false0us-gaap_PropertyPlantAndEquipmentGrossus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2177900000021779falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsef alsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1918500000019185falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse2177900000021779falsefalsefalsefalsefalse10truefalsefalse1918500000019185falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount at the balance sheet date for long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, physical structures, machinery, vehicles, furniture, computer equipment, construction in progress, and similar items. Amount does not include depreciation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 falsefalseElectric utility plant in service and other property138false0nee_AccumulatedDepreciationAndAmortizationneefalsecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-4275000000-4275falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3fa lsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse-3513000000-3513falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9true falsefalse-4275000000-4275falsefalsefalsefalsefalse10truefalsefalse-3513000000-3513falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseLess accumulated depreciation and amortization139false0us-gaa p_PropertyPlantAndEquipmentNetus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1750400000017504falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1567200000015672falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1750400000017504falsefalsefalsefalsefalse10truefalsefalse1567200000015672falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, and production equipment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 falsefalseTotal property, plant and equipment - net140true0us-gaap_AssetsCurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalse false00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCURRENT ASSETS [Abstract]141false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstant No definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse282000000282falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsef alsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse156000000156falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefa lsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse282000000282falsefalsefalsefalsefalse10truefalsefalse156000000156falsefalsefalsefalsefalse11truefalsefalse414000000414falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents142false0nee_ReceivablesneefalsedebitinstantAccountsReceivableNetCurrent plus OtherReceivablesNetfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse13800000001380falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalse false00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse12470000001247falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefals efalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse13800000001380falsefalsefalsefalsefalse10truefalsefalse12470000001247falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccountsReceivableNetCurrent plus OtherReceivablesNetNo authoritative reference available.falsefalseReceivables143false0nee_OtherCurrentAssetsneefalsedebitinstantAssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivablesfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse10240000001024 falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse12580000001258falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse10240000001024falsefalsefalsefalsefalse10truefalsefalse12580000001258falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivablesNo authoritative reference available.falsefalseOther144false0us-gaap_AssetsCurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse26860000002686falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse26610000002661falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse26860000002686falsefalsefalsefalsefalse10truefalsefalse26610000002661falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 9 -Article 5 falsefalseTotal current assets145true0us-gaap_OtherAssetsNoncurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefals e00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseOTHER ASSETS [Abstract]146false0us-gaap_EquityMethodInvestmentsus-gaaptruedebitinstantNo d efinition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse< Cell>8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse< Id>10truefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment losses recognized.No authoritative reference available.falsefalseInvestment in subsidiaries147false0us-gaap_OtherAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse38450000003845falsefalsefalsef alsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalse< /hasSegments>false4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse32570000003257falsefalsefalse falsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalse false8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse38450000003845falsefalsefalsefalsefalse10truefalsefalse32570000003257falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of assets not otherwise specified in the taxonomy. Also serves as the sum of assets not individually reported in the financial statements, or not separately disclosed in notes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 7 falsefalseOther148false0us-gaap_AssetsNoncurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse38450000003845falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse32570000003257falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse38450000003845falsefalsefalsefalsefalse10truefalsefalse32570000003257falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 falsefalseTotal other assets149false0us-gaap_Assetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse2403500000024035falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefal se00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse2159000000021590falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalse false00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse< /DisplayZeroAsNone>2403500000024035falsefalsefalsefalsefalse10truefalsefalse2159000000021590falsefalsefalsefalsefalse11falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 falsefalseTOTAL ASSETS150true0nee_TotalCapitalizationAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefals e00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCAPITALIZATION [Abstract]151false0nee_TotalCommonShareholdersEquityneefalsenainstantNo definition av ailable.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse43590000004359falsefalsefalsefalsefalse 2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse43490000004349falsefalsefalsefalsefals e6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse43590000004359falsefalsefalsefalsefal se10truefalsefalse43490000004349falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseCommon shareholders' equity152false0us-gaap_LongTermDebtNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1133100000011331falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1050600000010506falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1133100000011331falsefalsefalsefalsefalse10truefalsefalse1050600000010506falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying values as of the balance sheet date of all long - -term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 falsefalseLong-term debt153false0nee_TotalCapitalizationneefalsenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse< /DisplayZeroAsNone>1569000000015690falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefal se1485500000014855falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalse false1569000000015690falsefalsefalsefalsefalse10truefalsefalse1485500000014855falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseTotal capitalization154true0us-gaap_LiabilitiesCurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCURRENT LIABILITIES [Abstract]155false0nee_DebtDueWithinOneYearneefalsecreditinstantCommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse26640000002664falsefalsefalsefalsefalse2falsefalsefalse00< NonNumericTextHeader />falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse17290000001729falsefalsefalsefalsefalse6falsefalsefalse00 falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse26640000002664falsefalsefalsefalsefalse10truefalsefalse17290000001729falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrentNo authoritative reference available.falsefalseDebt due within one year156false0us-gaap_AccountsPayableCurrentAndNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse< PreferredLabelRole>terselabel1truefalsefalse571000000571falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse453000000453falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse571000000571falsefalsefalsefalsefalse10truefalsefalse453000000453falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 falsefalseAccounts payable157false0nee_OtherCurrentLiabilitiesneefalsecreditinstantLiabilitiesCurrent minus CondensedFinancialStatementsDebtDueWithinOneYear minus AccountsPayableCurrentAndNoncurrentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse13610000001361falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse11700000001170falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse13610000001361falsefalsefalsefalsefalse10truefalsefalse11700000001170falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryLiabilitiesCurrent minus CondensedFinancialStatementsDebtDueWithinOneYear minus AccountsPayableCurrentAndNoncurrentNo authoritative reference available.falsefalseOther158false0us-gaap_LiabilitiesCurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse45960000004596falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse33520000003352falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse45960000004596falsefalsefalsefalsefalse10truefalsefalse33520000003352falsefalsefalsefalsefalse11falsefalsefalse00< NonNumbericText />falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 21 -Article 5 falsefalseTotal current liabilities159true0us-gaap_LiabilitiesNoncurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefa lse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseOTHER LIABILITIES AND DEFERRED CREDITS [Abstract]160false0us-gaap_AssetRetirementObligationsNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse556000000556falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse585000000585falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse556000000556falsefalsefalsefalsefalse10truefalsefalse585000000585falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNoncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 3, 10, 22 falsefalseAsset retirement obligations161false0us-gaap_DeferredTaxLiabilitiesNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse13360000001336falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefa lsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse13180000001318falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsef alsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse13360000001336falsefalsefalsefalsefalse10truefalsefalse13180000001318falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryRepresents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A noncurrent taxable temporary difference is a difference between the tax basis and the carrying amount of a noncurrent asset or liability i n the financial statements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise shall separate deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets shall be classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, shall be classified according to the expected reversal date of the temporary difference.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 41, 42 falsefalseAccumulated deferred income taxes162false0us-gaap_RegulatoryLiabilitiesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefal se00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the periodReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 falsefalseRegulatory liabilities163false0us-gaap_OtherLiabilitiesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse18570000001857falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse14800000001480falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse18570000001857falsefalsefalsefalsefalse10truefalsefalse14800000001480falsefalsefalsefalsefalse11falsefa lsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of liabilities not otherwise specified in the taxonomy. Also serves as the sum of liabilities not individually reported in the financial statements, or not separately disclosed in notes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 9 falsefalseOther164false0us-gaap_LiabilitiesNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse37490000003749falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefa lse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse33830000003383falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsef alse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse37490000003749falsefalsefalsefalsefalse10truefalsefalse33830000003383falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal obligations incurred as part of normal operations that is expected to be repaid beyond the following twelve months or one business cycle.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22, 23, 24, 25, 26, 27 -Article 5 falsefalseTotal other liabilities and deferred credits165false0us-gaap_CommitmentsAndContingencies2009us-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsef alsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalse< /IsRatio>false00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalse< DisplayZeroAsNone>false00 falsefalsefalsefalsefalse10falsefalsefalse00 falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRepresents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. This caption alerts the reader that one or more notes to the financial statements disclose pertinent information about the entity's commitments and contingencies.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 25 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 9 falsefalseCOMMITMENTS AND CONTINGENCIES166false0us-gaap_LiabilitiesAndStockholdersEquityus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse2403500000024035falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalse false2159000000021590falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefa lsefalse2403500000024035falsefalsefalsefalsefalse10truefalsefalse2159000000021590falsefalsefalsefalsefalse11fals efalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of all Liabilities and Stockholders' Equity items.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 32 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 25 -Article 7 falsefalseTOTAL CAPITALIZATION AND LIABILITIES167true0us-gaap_StatementOfCashFlowsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCondensed Consolidating Statements of Cash Flows [Abstract]168false0us-gaap_NetCashProvidedByUsedInOperatingActivitiesus-gaaptruena durationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse19400000001940falsefalsefalsefalsefalse10truefalsefalse15130000001513falsefalsefalsefalsefalse11truefalsefalse11820000001182falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNET CASH PROVIDED BY OPERATING ACTIVITIES169true0us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1fa lsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM INVESTING ACTIVITIES [Abstract]170false0nee_CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchasesneefalsecreditdurationCapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00 falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00false falsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-3140000000-3140falsefalsefalsefalsefalse10truefalsefalse-3289000000-3289falsefalsefalsefalsefalse11truefalsefalse-2857000000-2857falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus OtherCapitalExpendituresNo authoritative reference available.falsefalseCapital expenditures, independent power and other investments and nuclear fuel purchases171false0nee_CapitalContributionsneefalsecreditdurationcapital contribution to subsidiaryfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarycapital contribution to subsidiaryNo authoritative reference available.falsefalseCapital contribution to FPL172false0nee_CashGrantsUnderAmericanRecoveryAndReinvestmentActOf2009neefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse428000000428falsefalsefalsefalsefalse10truefalsefalse100000000100falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseCash grants under the Recovery Act173false0us-gaap_PaymentsToAcquireOtherLoansAndLeasesHeldForInvestmentus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefal se7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse-500000000-500falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow from other loans and leases held-for-investment not otherwise defined in the taxonomy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 102 -Paragraph 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph a falsefalseFunding of loan174false0nee_OtherCashFlowsFromInvestingActivitiesNetneefalsedebitdurationNetCashProvidedByUsedInInvestingActivities minus...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsef alsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse50000005falsefalsefalsefalsefalse10truefalsefalse10000001falsefalsefalsefalsefalse11true falsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNetCashProvidedByUsedInInvestingActivities minus CondensedFinancialStatementsCapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases minus SaleOfIndependentPowerInvestmentsNo authoritative reference available.falsefalseOther - net175false0us-gaap_NetCashProvidedByUsedInInvestingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00 falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-2707000000-2707falsefalsefalsefalsefalse10truefalsefalse-3188000000-3188falsefalsefalsefalsefalse11truefalsefalse-3357000000-3357falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from investing activity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet Cash Provided By Used In Investing Activities176true0us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5fa lsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM FINANCING ACTIVITES [Abstract]177false0us-gaap_ProceedsFromIssuanceOfLongTermDebtus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefals efalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse28000000002800falsefalsefal sefalsefalse10truefalsefalse27040000002704falsefalsefalsefalsefalse11truefalsefalse32380000003238falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b falsefalseIssuances of long-term debt178false0us-gaap_RepaymentsOfLongTermDebtus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefa lse-727000000-727falsefalsefalsefalsefalse10truefalsefalse-1371000000-1371falsefalsefalsefalsefalse11truefalse false-1118000000-1118falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b falsefalseRetirements of long-term debt179false0nee_SaleOfDifferentialMembershipInterestsneefalsenadurationThe cash inflow from the sale of membership interests.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1f alsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false< /IsNumeric>falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse261000000261falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11true falsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from the sale of membership interests.No authoritative reference available.falsefalseProceeds from sale of differential membership interests180false0us- gaap_ProceedsFromRepaymentsOfShortTermDebtus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-414000000-414< IsIndependantCurrency>falsefalsefalsefalsefalse10truefalsefalse110000000110falsefalsefalsefalsefalse11truefalsefalse917000000917falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 falsefalseNet change in short-term debt181false0us-gaap_ProceedsFromIssuanceOfCommonStockus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsef alsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalse< /IsRatio>false00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from the additional capital contribution to the entity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a falsefalseIssuances of common stock - net182false0us-gaap_PaymentsOfDividendsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefal se00falsefalsefalsefalsefalse10truefalsefalse00falsefalsefalsefalsefalse11truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow from the entity's earnings to the shareholders.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a falsefalseDividends on common stock183false0us-gaap_ProceedsFromPaymentsForOtherFinancingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefals efalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-1027000000-1027falsefalsefalsefalsefalse10truefalsefalse-26000000-26falsefalsefalsefalsefalse11true falsefalse-675000000-675falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 falsefalseOther - net184false0us-gaap_NetCashProvidedByUsedInFinancingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefa lse893000000893falsefalsefalsefalsefalse10truefalsefalse14170000001417falsefalsefalsefalsefalse11truefalsefalse23620000002362falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from financing activity for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet cash provided by (used in) financing activities185false0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1fa lsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse126000000126falsefalsefalsefalsefalse10truefalsefalse-258000000-258falsefalsefalsefalsefalse11true< /IsNumeric>falsefalse187000000187falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net change between the beginning and ending balance of cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet increase (decrease) in cash and cash equivalents186false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3f alsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5false< /IsNumeric>falsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9true falsefalse156000000156falsefalsefalsefalsefalse10truefalsefalse414000000414falsefalsefalsefalsefalse11t ruefalsefalse227000000227falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, ex cluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or co mpany statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents at beginning of year187false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1true falsefalse282000000282falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3 falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5true< /IsNumeric>falsefalse156000000156falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7f alsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse282000000282falsefalsefalsefalsefalse10truefalsefalse156000000156falsefalsefalsefalsefalse11truefalsefalse414000000414falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equiv alents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with oth ers, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents at end of year188false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/summarizedfinancialinformationofcapitalholdingsdetails1f alsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false< /IsNumeric>falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse18falsefalseUSDtruefalse{dei_LegalEntityAxis} : Other Consolidated Entity And Consolidation Eliminations Member 1/1/2010 - 12/31/2010 USD ($) $c00375http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseOther [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldinee_OtherConsolidatedEntityAndConsolidationEliminationsMemberdei_LegalEntityAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$19falsefalseUSDtruefalse{dei_LegalEntityAxis} : Other Consolidated Entity And Consolidation Eliminations Member 1/1/2009 - 12/31/2009 USD ($) $c00053http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseOther [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldinee_OtherConsolidatedEntityAndConsolidationEliminationsMemberdei_LegalEntityAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$20falsefalseUSDtruefalse{dei_LegalEntityAxis} : Other Consolidated Entity And Consolidation Eliminations Member 1/1/2008 - 12/31/2008 USD ($) $c00020http://www.sec.gov/CIK0000753308duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseOther [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldinee_OtherConsolidatedEntityAndConsolidationEliminationsMemberdei_LegalEntityAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseOther [Member]190true0us-gaap_IncomeStatementAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefa lsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseConsolidated Statements of Income [Abstract]191false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00[1],[2]falsefalsefalsefalsefalse2falsefalsefalse00[1],[2]falsefalsefalse< /DisplayDateInUSFormat>falsefalse3falsefalsefalse00[1],[2]falsefalsefalsefalsefalse4falsefalsefalse00[1],[2]falsefalsefalsefalsefalse5falsefalsefalse00[1],[2]falsefalsefalsefalsefalse6falsefalsefalse00[1],[2]falsefalsefalsefalsefalse7falsefalsefalse00[1],[2]falsefalsefalsefalsefalse8falsefalsefalse00[1],[2]falsefalsefalsefalsefalse9truefalsefalse1047400000010474[4]falsefalsefalsefalsefalse10truefalsefalse1147900000011479[4]falsefalsefalsefalsefalse11truefalsefalse1164000000011640[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recog nized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseOperating revenues192false0us-gaap_OperatingExpensesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefal se00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-8624000000-8624[4]falsefalsefalsefalsefalse10truefalsefalse-9898000000-9898[4]falsefalsefalsefalsefalse11true< IsRatio>falsefalse-10111000000-10111[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryGenerally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.No authoritative reference available.falsefalseOperating expenses193false0nee_InterestExpenseAggregateExpensesneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-34 6000000-346[4]falsefalsefalsefalsefalse10truefalsefalse-301000000-301[4]falsefalsefalsefalsefalse11truefalsefalse-316000000-316[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseInterest expense194false0nee_OtherIncomeDeductionsNetneefalsedebitdurationTotalOtherDeductionsNet minus InterestExpenseAggregateExpensesfalsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-1910000000-1910[4]false falsefalsefalsefalse10truefalsefalse-1595000000-1595[4]falsefalsefalsefalsefalse11truefalsefalse-1630000000-1630[4]< CurrencyCode />falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotalOtherDeductionsNet minus InterestExpenseAggregateExpensesNo authoritative reference available.falsefalseOther income (deductions) - net195false0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomesticus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefal se4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-406000000-406[4]falsefalsefalsefalsefalse10truefalsefalse-315000000-315[4]falsefalsefalsefalsefalse11truefalsefalse-417000000-417[4]falsefalsefalse< /DisplayDateInUSFormat>falsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of earnings (loss) from continuing operations before income taxes that is attributable to domestic operations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 falsefalseIncome (loss) before income taxes196false0us-gaap_IncomeTaxExpenseBenefitus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse580000000580[4]falsefalsefalsefalsefalse10truefalsefalse472000000472[4]falsefalsefalsefalsefalse11true< /IsNumeric>falsefalse442000000442[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b falsefalseIncome tax expense (benefit)197false0us-gaap_NetIncomeLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00[1],[2]falsefalsefalsefalsefalse2falsefalsefalse00[1],[2]falsefalsefalsefalsefalse3fals efalsefalse00[1],[2]falsefalsefalsefalsefalse4falsefalsefalse00[1],[2]falsefalsefalsefalsefalse5falsefalsefalse00[1],[2]falsefalsefalsefalsefalse6falsefalsefalse00[1],[2]falsefalsefalsefalsefalse7falsefalsefalse00[1],[2]falsefalsefalsefalsefalse8falsefalsefalse00[1],[2]falsefalsefalsefalsefalse9truefalsefalse-986000000-986[4]falsefalsefalsefalsefalse10truefalsefalse-787000000-787[4]falsefal sefalsefalsefalse11truefalsefalse-859000000-859[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolid ated financial statements, the amount of profit or loss for the period, net of income taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 falsefalseNet income (loss)198true0us-gaap_PropertyPlantAndEquipmentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefal se00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse< /DisplayZeroAsNone>00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalsePROPERTY, PLANT AND EQUIPMENT [Abstract]199false0us-gaap_PropertyPlantAndEquipmentGrossus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse3242300000032423[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse3098200000030982[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefa lsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse3242300000032423[4]falsefalsefalsefalsefalse10truefalsefalse3098200000030982[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount at the balance sheet date for long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, physical structures, machinery, vehicles, furniture, computer equipment, construction in progress, and similar items. Amount does not include depreciation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 falsefalseElectric utility plant in service and other property200false0nee_AccumulatedDepreciationAndAmortizationneefalsecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-10871000000-10871[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse-10578000000-10578[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-10871000000-10871[4]falsefalsefalsefalsefalse10truefalsefalse-10578000000-10578[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseLess accumulated depreciation and amortization201< IsAbstractGroupTitle>false0us-gaap_PropertyPlantAndEquipmentNetus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse2155200000021552[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse2040400000020404[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse2155200000021552[4]falsefalsefalsefalsefalse10truefalsefalse2040400000020404[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, and production equipment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 falsefalseTotal property, plant and equipment - net202true0us-gaap_AssetsCurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalse false00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCURRENT ASSETS [Abstract]203false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstant No definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2000000020[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse8200000082[4]falsefalsefalse falsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse2000000020[4]falsefalsefalsefalsefalse10truefalsefalse8200000082[4]falsefalsefalsefalsefalse11truefalsefalse121000000121[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents204false0nee_ReceivablesneefalsedebitinstantAccountsReceivableNetCurrent plus OtherReceivablesNetfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse548000000548[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse547000000547[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9t ruefalsefalse548000000548[4]falsefalsefalsefalsefalse10truefalsefalse547000000547[4]falsefalsefalsefalsefal se11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccountsReceivableNetCurrent plus OtherReceivablesNetNo authoritative reference available.falsefalseReceivables205false0 nee_OtherCurrentAssetsneefalsedebitinstantAssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivablesfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse13410000001341[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse59000000059 0[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse13410000001341[4]falsefalsefalsefalsefalse10truefalsefalse590000000590[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivablesNo authoritative reference available.falsefalseOther206false0us-gaap_AssetsCurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse19090000001909[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse12190000001219[4]fal sefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse19090000001909[4]falsefalsefalsefalsefalse10truefalsefalse12190000001219[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 9 -Article 5 falsefalseTotal current assets207true0us-gaap_OtherAssetsNoncurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefals e00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseOTHER ASSETS [Abstract]208false0us-gaap_EquityMethodInvestmentsus-gaaptruedebitinstantNo d efinition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse-14150000000-14150[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse-12785000000-12785[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-14150000000-14150[4]falsefalsefals efalsefalse10truefalsefalse-12785000000-12785[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment losses recognized.No authoritative reference available.falsefalseInvestment in subsidiaries209false0us-gaap_OtherAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse44510000004451[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse42290000004229[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse44510000004451[4]falsefalsefalsefalsefalse10truefalsefalse42290000004229[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of assets not otherwise specified in the taxonomy. Also serves as the sum of assets not individually reported in the financial statements, or not separately disclosed in notes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 7 falsefalseOther210false0us-gaap_AssetsNoncurrentus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse-9699000000-9699[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse-8556000000-8556[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalse false-9699000000-9699[4]falsefalsefalsefalsefalse10truefalsefalse-8556000000-8556[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 falsefalseTotal other assets211false0us-gaap_Assetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1376200000013762[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1306700000013067[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefa lsefalse1376200000013762[4]falsefalsefalsefalsefalse10truefalsefalse1306700000013067[4]falsefalsefalsefalsefalse< /Cell>11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 falsefalseTOTAL ASSETS212true0nee_TotalCapitalizationAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefals e00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCAPITALIZATION [Abstract]213false0nee_TotalCommonShareholdersEquityneefalsenainstantNo definition av ailable.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-4359000000-4359[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse-4349000000-4349[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalse falsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-4359000000-4359[4]falsefalsefalsefalsefalse10truefalsefalse-4349000000-4349[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseCommon shareholders' equity214false0us-gaap_LongTermDebtNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse66820000006682[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse0 0falsefalsefalsefalsefalse5truefalsefalse57940000005794[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse66820000006682[4]falsefalsefalsefalsefalse10truefalsefalse57940000005794[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryI temTypemonetarySum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 falsefalseLong-term debt215false0nee_TotalCapitalizationneefalsenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse< /DisplayZeroAsNone>23230000002323[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse14450000001445[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9true falsefalse23230000002323[4]falsefalsefalsefalsefalse10truefalsefalse14450000001445[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseTotal capitalization216true0us-gaap_LiabilitiesC urrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00 falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00false falsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCURRENT LIABILITIES [Abstract]217false0nee_DebtDueWithinOneYearneefalsecreditinstantCommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse145000000145[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse860000000860[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse 00falsefalsefalsefalsefalse9truefalsefalse145000000145[4]falsefalsefalsefalsefalse10truefalsefa lse860000000860[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrentNo authoritative reference available.falsefalseDebt due within one year218false0us-gaap_AccountsPayableCurrentAndNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse553000000553[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse539000000539[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse553000000553[4]falsefalsefalsefalsefalse10truefalsefalse539000000539[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying value as of the balance s heet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 falsefalseAccounts payable219false0nee_OtherCurrentLiabilitiesneefalsecreditinstantLiabilitiesCurrent minus CondensedFinancialStatementsDebtDueWithinOneYear minus AccountsPayableCurrentAndNoncurrentfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse12580000001258[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse12810000001281[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalse< /hasSegments>false7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse12580000001258[4]falsefalsefalsefalsefalse10truefalsefalse12810000001281[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryLiabilitiesCurrent minus CondensedFinancialStatementsDebtDueWithinOneYear minus AccountsPayableCurrentAndNoncurrentNo authoritative reference available.fals efalseOther220false0us-gaap_LiabilitiesCurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1956000000 1956[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse26800000002680[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefals e00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse19560000001956[4]falsefalsefalsefalsefalse10truefalsefalse26800000002680[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 21 -Article 5 falsefalseTotal current liabilities221true0us-gaap_LiabilitiesNoncurrentAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefa lse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseOTHER LIABILITIES AND DEFERRED CREDITS [Abstract]222false0us-gaap_AssetRetirementObligationsNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse10830000001083[4]falsefalsef alsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalse< /DisplayDateInUSFormat>falsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse18330000001833[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse10830000001083[4]falsefalsefalsefalsefalse10truefalsefalse18330000001833[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNoncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 3, 10, 22 falsefalseAsset retirement obligations223false0us-gaap_DeferredTaxLiabilitiesNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse37200000003720[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse34480000003448[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7 falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse37200000003720[4]falsefalsefalsefalsefalse10truefalsefalse34480000003448[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryRepresents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A noncurrent taxable temporary difference is a difference betwee n the tax basis and the carrying amount of a noncurrent asset or liability in the financial statements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise shall separate deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets shall be classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, shall be classified according to the expected reversal date of the temporary difference.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 41, 42 falsefalseAccumulated deferred income taxes224false0us-gaap_RegulatoryLiabilitiesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalse false42130000004213[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse31660000003166[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9 truefalsefalse42130000004213[4]falsefalsefalsefalsefalse10truefalsefalse31660000003166[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the periodReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 falsefalseRegulatory liabilities225false0us-gaap_OtherLiabilitiesus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse467000000467[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalse< /IsRatio>false495000000495[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse467000000467[4]falsefalsefalsefalsefalse10truefalsefalse495000000495[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCarrying amount as of the balance sheet date of liabilities not otherwise specified in the taxonomy. Also serves as the sum of liabilities not individually reported in the financial statements, or not separately disclosed in notes.Reference 1: http://www.xbrl.org/2003/role/presentat ionRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 9 falsefalseOther226false0us-gaap_LiabilitiesNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse94830000009483[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse89420000008942[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefal sefalse94830000009483[4]falsefalsefalsefalsefalse10truefalsefalse89420000008942[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal obligations incurred as part of normal operations that is expected to be repaid beyond the following twelve months or one business cycle.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22, 23, 24, 25, 26, 27 -Article 5 falsefalseTotal other liabilities and deferred credits227false0us-gaap_CommitmentsAndContingencies2009us-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsef alsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalse< /IsRatio>false00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalse< DisplayZeroAsNone>false00 falsefalsefalsefalsefalse10falsefalsefalse00 falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRepresents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. This caption alerts the reader that one or more notes to the financial statements disclose pertinent information about the entity's commitments and contingencies.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 25 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 9 falsefalseCOMMITMENTS AND CONTINGENCIES228false0us-gaap_LiabilitiesAndStockholdersEquityus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1376200000013762[4]falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false< /IsNumeric>falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse1306700000013067[4]falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7 falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9 truefalsefalse1376200000013762[4]falsefalsefalsefalsefalse10truefalsefalse1306700000013067[4]falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of all Liabilities and Stockholders' Equity items.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 32 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 25 -Article 7 falsefalseTOTAL CAPITALIZATION AND LIABILITIES229true0us-gaap_StatementOfCashFlowsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCondensed Consolidating Statements of Cash Flows [Abstract]230false0us-gaap_NetCashProvidedByUsedInOperatingActivitiesus-gaaptruena durationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse716000000716[4]falsefalsefalsefalsefalse10truefalsefalse23590000002359[4]falsefalsefalsefalsefalse11truefalsefalse14550000001455[4]falsefa lsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNET CASH PROVIDED BY OPERATING ACTIVITIES231true0us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1fa lsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM INVESTING ACTIVITIES [Abstract]232false0nee_CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchasesneefalsecreditdurationCapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00 falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00false falsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-2706000000-2706[4]< IsIndependantCurrency>falsefalsefalsefalsefalse10truefalsefalse-2717000000-2717[4]falsefalsefalsefalsefalse11truefalsefalse-2367000000-2367[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus OtherCapitalExpendituresNo authoritative reference available.falsefalseCapital expenditures, independent power and other investments and nuclear fuel purchases233false0nee_CapitalContributionsneefalsecreditdurationcapital contribution to subsidiaryfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefa lsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse660000000660[4]falsefalsefalsefalsefalse10truefalsefalse00[4]falsefalsefalsefalsefalse11truefalsefalse7500000075[4]fa lsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarycapital contribution to subsidiaryNo authoritative reference available.falsefalseCapital contribution to FPL234false0nee_CashGrantsUnderAmericanRecoveryAndReinvestmentActOf2009neefalsenadurationNo definition available.falsefa lsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse160000000160[4]falsefalsefalsefalsefalse10truefalsefalse00[4]falsefalsefalsefalsefalse11truefalsefalse00[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseCash grants under the Recovery Act235false0us-gaap_PaymentsToAcquireOtherLoansAndLeasesHeldForInvestmentus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalse falsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00fa lsefalsefalsefalsefalse9truefalsefalse00[4]falsefalsefalsefalsefalse10truefalsefalse00[4]falsefalsefalsefalsefalse11truefalsefalse00[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow from other loans and leases held-for-investment not otherwise defined in the taxonomy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 102 -Paragraph 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph a falsefalseFunding of loan236false0nee_OtherCashFlowsFromInvestingActivitiesNetneefalsedebitdurationNetCashProvidedByUsedInInvestingActivities minus...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsef alsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-31000000-31[4]falsefalsefalsefalsefalse10truefalsefalse-23000000-23[4]falsefalsefalsefalsefalse< Id>11truefalsefalse-72000000-72[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNetCashProvidedByUsedInInvestingActivities minus CondensedFinancialStatementsCapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases minus SaleOfIndependentPowerInvestmentsNo authoritative reference available.falsefalseOther - net237false0us-gaap_NetCashProvidedByUsedInInvestingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse0< /NumericAmount>0falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-1917000000-1917[4]falsefalsefalsefalsefalse10truefalsefalse-2740000000-2740[4]falsefalsefalsefalsefalse11truefalsefalse-2364000000-2364[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from investing activity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet Cash Provided By Used In Investing Activities238true0us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5fa lsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM FINANCING ACTIVITES [Abstract]239false0us-gaap_ProceedsFromIssuanceOfLongTermDebtus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefals efalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse924000000924[4]falsefalsefalsefalsefalse10truefalsefalse516000000516[4]falsefalsefalsefalsefalse11truefalsefalse589000000589[4]false~~falsefalsefalsefalse~~Monetaryxbrli:monetaryItemTypemonetaryThe cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b falsefalseIssuances of long-term debt240false0us-gaap_RepaymentsOfLongTermDebtus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefa lse-42000000-42[4]falsefalsefalsefalsefalse10truefalsefalse-264000000-264[4]falsefalsefalsefalsefalse11truefalsefalse-240000000-240[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b falsefalseRetirements of long-term debt241false0nee_SaleOfDifferentialMembershipInterestsneefalsenadurationThe cash inflow from the sale of membership interests.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1f alsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false< /IsNumeric>falsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00[4]falsefalsefalsefalsefalse10truefalsefalse00[4]falsefalsefalsefalsefalse11truefalsefalse00[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from the sale of membership interests.No authoritative reference available.falsefalseProceeds from sale of differential membership interests242false0us-gaap_ProceedsFromRepaymentsOfShortTermDebtus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-716000000-716[4]falsefalsefalsefalsefalse10truefalsefalse4400000044[4]falsefalsefalsefalsefalse11truefalsefalse-69000000-69[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 falsefalseNet change in short-term debt243false0us-gaap_ProceedsFromIssuanceOfCommonStockus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsef alsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalse< /IsRatio>false00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse00[4]falsefalsefalsefalsefalse10truefalsefalse00[4]falsefalsefalsefalsefalse11truefalsefalse00[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from the additional capital contribution to the entity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a falsefalseIssuances of common stock - net244false0us-gaap_PaymentsOfDividendsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalse< DisplayZeroAsNone>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefal se00[4]falsefalsefalsefalsefalse10truefalsefalse00[4]falsefalsefalsefalsefalse11truefals efalse00[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow from the entity's earnings to the shareholders.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a falsefalseDividends on common stock245false0us-gaap_ProceedsFromPaymentsForOtherFinancingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefals efalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse973000000973[4]falsefalsefalsefalsefalse10truefalsefalse4600000046[4]falsefalsefalsefalsefalse11 truefalsefalse687000000687[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 falsefalseOther - net246false0us-gaap_NetCashProvidedByUsedInFinancingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefa lse11390000001139[4]falsefalsefalsefalsefalse10truefalsefalse342000000342[4]falsefalsefalsefalsefalse11truefalsefalse967000000967[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from financing activity for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet cash provided by (used in) financing activities247false0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1fa lsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7false falsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse-62000000-62[4]falsefalsefalsefalsefalse10truefalsefalse-39000000-39[4]falsefalsefalsefalsefalse11truefalsefalse5800000058[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net change between the beginning and ending balance of cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 falsefalseNet increase (decrease) in cash and cash equivalents248false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3f alsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5false< /IsNumeric>falsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9true falsefalse8200000082[4]falsefalsefalsefalsefalse10truefalsefalse121000000121[4]falsefalsefalsefalsefalse 11truefalsefalse6300000063[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing ar rangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents at beginning of year249false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1true falsefalse2000000020[4]falsetruefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3 falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5 truefalsefalse8200000082[4]falsetruefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse< Cell>9truefalsefalse2000000020[4]falsetruefalsefalsefalse10truefalsefalse8200000082[4]falsetruefalsefalsefalse11truefalsefalse121000000121[4]falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effe ctively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as com pensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCash and cash equivalents at end of year1In the opinion of NextEra Energy and FPL, all adjustments, which consist of normal recurring accruals necessary to present a fair statement of the amounts shown for such periods, have been made. Results of operations for an interim period generally will not give a true indication of results for the year.2The sum of the quarterly amounts may not equal the total for the year due to rounding.3NextEra Energy Resources' tax expense (benefit) includes PTCs that were recognized based on its tax sharing agreement with NextEra Energy. See Note 1 - Income Taxes.4Represents FPL and consolidating adjustments.1124 5Summarized Financial Information of Capital Holdings (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruetrue