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2.2.0.7 true Summarized Financial Information of FPL Group Capital (Detail) (USD $) 009120 - Disclosure - Summarized Financial Information of FPL Group Capital (Detail) true false In Millions false false 1 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u003 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 2 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u003 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 3 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u003 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 4 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u003 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 5 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ 2 Condensed Consolidating Statements of Income 2 us-gaap_IncomeStatementAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 3 Operating revenues 2 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 true true false false 3591000000 3591 false false false 2 true true false false 3811000000 3811 false false false 3 true true false false 7213000000 7213 false false false 4 true true false false 7515000000 7515 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Aggregate 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 false 4 Operating Expenses 2 us-gaap_OperatingExpenses us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -2882000000 -2882 false false false 2 false true false false -3206000000 -3206 false false false 3 false true false false -5565000000 -5565 false false false 4 false true false false -6327000000 -6327 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Generally 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. false 5 Interest expense 2 nee_InterestExpenseAggregateExpenses nee false na duration The aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other... false false false false false false false false false false false terselabel false 1 false true false false -247000000 -247 false false false 2 false true false false -215000000 -215 false false false 3 false true false false -485000000 -485 false false false 4 false true false false -426000000 -426 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other borrowings, including debt related commitment fees and debt issuance costs. Amounts is reported net of interest capitalized in accordance with Statement of Financial Accounting Standard No. 34 and net of any allowance for borrowed used during construction in accordance with Statement of Financial Accounting Standard No. 71 Paragraph 15. No authoritative reference available. false 6 Other Income Deductions Net 2 nee_OtherIncomeDeductionsNet nee false debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 32000000 32 false false false 2 false true false false 51000000 51 false false false 3 false true false false 101000000 101 false false false 4 false true false false 62000000 62 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 7 Income (loss) before income taxes 2 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 494000000 494 false false false 2 false true false false 441000000 441 false false false 3 false true false false 1264000000 1264 false false false 4 false true false false 824000000 824 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 true 8 Income tax expense (benefit) 2 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 77000000 77 false false false 2 false true false false 71000000 71 false false false 3 false true false false 291000000 291 false false false 4 false true false false 90000000 90 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 9 Net income (loss) 2 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 417000000 417 false false false 2 false true false false 370000000 370 false false false 3 false true false false 973000000 973 false false false 4 false true false false 734000000 734 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 10 Property, Plant and Equipment 2 us-gaap_PropertyPlantAndEquipmentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 11 Electric utility plant in service and other property 2 us-gaap_PropertyPlantAndEquipmentGross us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 52180000000 52180 false false false 2 false false false false 0 0 false false false 3 false true false false 52180000000 52180 false false false 4 false false false false 0 0 false false false 5 false true false false 50169000000 50169 false false false xbrli:monetaryItemType monetary Carrying 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 false 12 Less accumulated depreciation and amortization 2 nee_AccumulatedDepreciationAndAmortization nee false na instant The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including... false false false false false false false false false false false verboselabel false 1 false true false false -14602000000 -14602 false false false 2 false false false false 0 0 false false false 3 false true false false -14602000000 -14602 false false false 4 false false false false 0 0 false false false 5 false true false false -14091000000 -14091 false false false xbrli:monetaryItemType monetary The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including nuclear fuel, but not including land) that has been recognized in the income statement. No authoritative reference available. false 13 Total property, plant and equipment - net 2 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 37578000000 37578 false false false 2 false false false false 0 0 false false false 3 false true false false 37578000000 37578 false false false 4 false false false false 0 0 false false false 5 false true false false 36078000000 36078 false false false xbrli:monetaryItemType monetary Tangible 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 false 14 Current assets 2 us-gaap_AssetsCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 15 Cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 829000000 829 false false false 2 false true false false 276000000 276 false false false 3 false true false false 829000000 829 false false false 4 false true false false 276000000 276 false false false 5 false true false false 238000000 238 false false false xbrli:monetaryItemType monetary Includes 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 false 16 Receivables 2 nee_Receivables nee false debit instant AccountsReceivableNetCurrent plus OtherReceivablesNet false false false false false false false false false false false false 1 false true false false 2025000000 2025 false false false 2 false false false false 0 0 false false false 3 false true false false 2025000000 2025 false false false 4 false false false false 0 0 false false false 5 false true false false 2247000000 2247 false false false xbrli:monetaryItemType monetary AccountsReceivableNetCurrent plus OtherReceivablesNet No authoritative reference available. false 17 Other Current Assets 2 nee_OtherCurrentAssets nee false debit instant AssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivables false false false false false false false false false false false false 1 false true false false 2445000000 2445 false false false 2 false false false false 0 0 false false false 3 false true false false 2445000000 2445 false false false 4 false false false false 0 0 false false false 5 false true false false 1852000000 1852 false false false xbrli:monetaryItemType monetary AssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivables No authoritative reference available. false 18 Assets Current 2 us-gaap_AssetsCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 5299000000 5299 false false false 2 false false false false 0 0 false false false 3 false true false false 5299000000 5299 false false false 4 false false false false 0 0 false false false 5 false true false false 4337000000 4337 false false false xbrli:monetaryItemType monetary Sum 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 false 19 Other Assets 2 us-gaap_OtherAssetsNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 20 Investment in subsidiaries 2 us-gaap_EquityMethodInvestments us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 0 0 false false false xbrli:monetaryItemType monetary This 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. false 21 Other 2 us-gaap_OtherAssets us-gaap true debit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 8332000000 8332 false false false 2 false false false false 0 0 false false false 3 false true false false 8332000000 8332 false false false 4 false false false false 0 0 false false false 5 false true false false 8043000000 8043 false false false xbrli:monetaryItemType monetary Carrying 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 false 22 Assets Noncurrent 2 us-gaap_AssetsNoncurrent us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 8332000000 8332 false false false 2 false false false false 0 0 false false false 3 false true false false 8332000000 8332 false false false 4 false false false false 0 0 false false false 5 false true false false 8043000000 8043 false false false xbrli:monetaryItemType monetary Sum 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 false 23 Assets 2 us-gaap_Assets us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 51209000000 51209 false false false 2 false false false false 0 0 false false false 3 false true false false 51209000000 51209 false false false 4 false false false false 0 0 false false false 5 false true false false 48458000000 48458 false false false xbrli:monetaryItemType monetary Sum 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 false 24 CAPITALIZATION 2 nee_TotalCapitalizationAbstract nee false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 25 Common shareholders' equity 2 nee_TotalCommonShareholdersEquity nee false na instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 13529000000 13529 false false false 2 false false false false 0 0 false false false 3 false true false false 13529000000 13529 false false false 4 false false false false 0 0 false false false 5 false true false false 12967000000 12967 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 26 Long-term debt ($858 related to VIEs at June 30, 2010) 2 us-gaap_LongTermDebtNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 17171000000 17171 false false false 2 false false false false 0 0 false false false 3 false true false false 17171000000 17171 false false false 4 false false false false 0 0 false false false 5 false true false false 16300000000 16300 false false false xbrli:monetaryItemType monetary Sum 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 false 27 Total Capitalization 2 nee_TotalCapitalization nee false na instant The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. false false false false false false false false false false false false 1 false true false false 30700000000 30700 false false false 2 false false false false 0 0 false false false 3 false true false false 30700000000 30700 false false false 4 false false false false 0 0 false false false 5 false true false false 29267000000 29267 false false false xbrli:monetaryItemType monetary The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. No authoritative reference available. false 28 CURRENT LIABILITIES 2 us-gaap_LiabilitiesCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 29 Debt Due Within One Year 2 nee_DebtDueWithinOneYear nee false credit instant CommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrent false false false false false false false false false false false false 1 false true false false 3022000000 3022 false false false 2 false false false false 0 0 false false false 3 false true false false 3022000000 3022 false false false 4 false false false false 0 0 false false false 5 false true false false 2589000000 2589 false false false xbrli:monetaryItemType monetary CommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrent No authoritative reference available. false 30 Accounts payable 2 us-gaap_AccountsPayableCurrentAndNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 1316000000 1316 false false false 2 false false false false 0 0 false false false 3 false true false false 1316000000 1316 false false false 4 false false false false 0 0 false false false 5 false true false false 992000000 992 false false false xbrli:monetaryItemType monetary Carrying 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 false 31 Other 2 nee_OtherCurrentLiabilities nee false na instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 2788000000 2788 false false false 2 false false false false 0 0 false false false 3 false true false false 2788000000 2788 false false false 4 false false false false 0 0 false false false 5 false true false false 2868000000 2868 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 32 Total current liabilities 2 us-gaap_LiabilitiesCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 7126000000 7126 false false false 2 false false false false 0 0 false false false 3 false true false false 7126000000 7126 false false false 4 false false false false 0 0 false false false 5 false true false false 6449000000 6449 false false false xbrli:monetaryItemType monetary Total 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 true 33 OTHER LIABILITIES AND DEFERRED CREDITS 2 us-gaap_LiabilitiesNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 34 Asset retirement obligations 2 us-gaap_AssetRetirementObligationsNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 2447000000 2447 false false false 2 false false false false 0 0 false false false 3 false true false false 2447000000 2447 false false false 4 false false false false 0 0 false false false 5 false true false false 2418000000 2418 false false false xbrli:monetaryItemType monetary Noncurrent 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 false 35 Accumulated deferred income taxes 2 us-gaap_DeferredTaxLiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 5242000000 5242 false false false 2 false false false false 0 0 false false false 3 false true false false 5242000000 5242 false false false 4 false false false false 0 0 false false false 5 false true false false 4860000000 4860 false false false xbrli:monetaryItemType monetary Represents 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 false 36 Regulatory liabilities 2 us-gaap_RegulatoryLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 3125000000 3125 false false false 2 false false false false 0 0 false false false 3 false true false false 3125000000 3125 false false false 4 false false false false 0 0 false false false 5 false true false false 3182000000 3182 false false false xbrli:monetaryItemType monetary The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 false 37 Other 2 us-gaap_OtherLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 2569000000 2569 false false false 2 false false false false 0 0 false false false 3 false true false false 2569000000 2569 false false false 4 false false false false 0 0 false false false 5 false true false false 2282000000 2282 false false false xbrli:monetaryItemType monetary Carrying 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 false 38 Liabilities Noncurrent 2 us-gaap_LiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 13383000000 13383 false false false 2 false false false false 0 0 false false false 3 false true false false 13383000000 13383 false false false 4 false false false false 0 0 false false false 5 false true false false 12742000000 12742 false false false xbrli:monetaryItemType monetary Total 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 false 39 COMMITMENTS AND CONTINGENCIES 2 us-gaap_CommitmentsAndContingencies2009 us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0   false false false 4 false false false false 0 0 false false false 5 false false false false 0 0   false false false xbrli:stringItemType string Represents 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 false 40 TOTAL CAPITALIZATION AND LIABILITIES 2 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 51209000000 51209 false false false 2 false false false false 0 0 false false false 3 false true false false 51209000000 51209 false false false 4 false false false false 0 0 false false false 5 false true false false 48458000000 48458 false false false xbrli:monetaryItemType monetary Total 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 false 41 Condensed Consolidating Statements of Cash Flows 2 us-gaap_StatementOfCashFlowsAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 42 Net Cash Provided By Used In Operating Activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1748000000 1748 false false false 4 false true false false 2144000000 2144 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 43 CASH FLOWS FROM INVESTING ACTIVITIES 2 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 44 Capital expenditures, independent power investments and nuclear fuel purchases 2 nee_CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases nee false credit duration CapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus... false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -2757000000 -2757 false false false 4 false true false false -2445000000 -2445 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary CapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus OtherCapitalExpenditures No authoritative reference available. false 45 Capital contribution to FPL 2 nee_CapitalContributions nee false credit duration capital contribution to subsidiary false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary capital contribution to subsidiary No authoritative reference available. false 46 Cash grants under the American Recovery and Reinvestment Act of 2009 2 nee_CashGrantsUnderAmericanRecoveryAndReinvestmentActOf2009 nee false na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 511000000 511 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 47 Other Cash Flows From Investing Activities Net 2 nee_OtherCashFlowsFromInvestingActivitiesNet nee false debit duration NetCashProvidedByUsedInInvestingActivities minus... false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -37000000 -37 false false false 4 false true false false 24000000 24 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary NetCashProvidedByUsedInInvestingActivities minus CondensedFinancialStatementsCapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases minus SaleOfIndependentPowerInvestments No authoritative reference available. false 48 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -2283000000 -2283 false false false 4 false true false false -2421000000 -2421 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 49 CASH FLOWS FROM FINANCING ACTIVITIES 2 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 50 Issuances of long-term debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1585000000 1585 false false false 4 false true false false 2372000000 2372 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 51 Retirements of long-term debt 2 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -269000000 -269 false false false 4 false true false false -1314000000 -1314 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 52 Sale of differential membership interests 2 nee_SaleOfDifferentialMembershipInterests nee false debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 190000000 190 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 53 Net change in short-term debt 2 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -54000000 -54 false false false 4 false true false false -743000000 -743 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 54 Issuances of common stock 2 us-gaap_ProceedsFromIssuanceOfCommonStock us-gaap true debit duration No definition available. false false false false false false false false false false false label false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 69000000 69 false false false 4 false true false false 83000000 83 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 55 Dividends on common stock 2 us-gaap_PaymentsOfDividends us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -410000000 -410 false false false 4 false true false false -382000000 -382 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 56 Proceeds From Payments For Other Financing Activities 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 15000000 15 false false false 4 false true false false 2000000 2 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 57 Net cash provided by financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1126000000 1126 false false false 4 false true false false 18000000 18 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 true 58 Net increase (decrease) in cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 591000000 591 false false false 4 false true false false -259000000 -259 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 59 Cash and cash equivalents at beginning of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 238000000 238 false false false 4 false true false false 535000000 535 false false false 5 false true false false 535000000 535 false false false xbrli:monetaryItemType monetary Includes 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 false 60 Cash and cash equivalents at end of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false true false false 829000000 829 false false false 2 false true false false 276000000 276 false false false 3 false true false false 829000000 829 false false false 4 false true false false 276000000 276 false false false 5 false true false false 238000000 238 false false false xbrli:monetaryItemType monetary Includes 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 false 61 NextEra Energy (Guarantor) 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/summarizedfinancialinformationoffplgroupcapitaldetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 6 USD true false false false NextEra Energy (Guarantor) dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 7 USD true false false false NextEra Energy (Guarantor) dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 8 USD true false false false NextEra Energy (Guarantor) dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 9 USD true false false false NextEra Energy (Guarantor) dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 10 USD true false false false NextEra Energy (Guarantor) dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ParentCompanyMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 62 Condensed Consolidating Statements of Income 2 us-gaap_IncomeStatementAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 63 Operating revenues 2 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false true false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Aggregate 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 false 64 Operating Expenses 2 us-gaap_OperatingExpenses us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -2000000 -2 false false false 2 false true false false -1000000 -1 false false false 3 false true false false -2000000 -2 false false false 4 false true false false -1000000 -1 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Generally 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. false 65 Interest expense 2 nee_InterestExpenseAggregateExpenses nee false na duration The aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other... false false false false false false false false false false false terselabel false 1 false true false false -4000000 -4 false false false 2 false true false false -4000000 -4 false false false 3 false true false false -8000000 -8 false false false 4 false true false false -8000000 -8 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other borrowings, including debt related commitment fees and debt issuance costs. Amounts is reported net of interest capitalized in accordance with Statement of Financial Accounting Standard No. 34 and net of any allowance for borrowed used during construction in accordance with Statement of Financial Accounting Standard No. 71 Paragraph 15. No authoritative reference available. false 66 Other Income Deductions Net 2 nee_OtherIncomeDeductionsNet nee false debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 427000000 427 false false false 2 false true false false 382000000 382 false false false 3 false true false false 989000000 989 false false false 4 false true false false 756000000 756 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 67 Income (loss) before income taxes 2 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 421000000 421 false false false 2 false true false false 377000000 377 false false false 3 false true false false 979000000 979 false false false 4 false true false false 747000000 747 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 true 68 Income tax expense (benefit) 2 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 4000000 4 false false false 2 false true false false 7000000 7 false false false 3 false true false false 6000000 6 false false false 4 false true false false 13000000 13 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 69 Net income (loss) 2 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 417000000 417 false false false 2 false true false false 370000000 370 false false false 3 false true false false 973000000 973 false false false 4 false true false false 734000000 734 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 70 Property, Plant and Equipment 2 us-gaap_PropertyPlantAndEquipmentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 71 Electric utility plant in service and other property 2 us-gaap_PropertyPlantAndEquipmentGross us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 19000000 19 false false false 2 false false false false 0 0 false false false 3 false true false false 19000000 19 false false false 4 false false false false 0 0 false false false 5 false true false false 2000000 2 false false false xbrli:monetaryItemType monetary Carrying 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 false 72 Less accumulated depreciation and amortization 2 nee_AccumulatedDepreciationAndAmortization nee false na instant The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including... false false false false false false false false false false false verboselabel false 1 false true false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 0 0 false false false xbrli:monetaryItemType monetary The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including nuclear fuel, but not including land) that has been recognized in the income statement. No authoritative reference available. false 73 Total property, plant and equipment - net 2 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 19000000 19 false false false 2 false false false false 0 0 false false false 3 false true false false 19000000 19 false false false 4 false false false false 0 0 false false false 5 false true false false 2000000 2 false false false xbrli:monetaryItemType monetary Tangible 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 false 74 Current assets 2 us-gaap_AssetsCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 75 Cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Includes 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 false 76 Receivables 2 nee_Receivables nee false debit instant AccountsReceivableNetCurrent plus OtherReceivablesNet false false false false false false false false false false false false 1 false true false false 667000000 667 false false false 2 false false false false 0 0 false false false 3 false true false false 667000000 667 false false false 4 false false false false 0 0 false false false 5 false true false false 453000000 453 false false false xbrli:monetaryItemType monetary AccountsReceivableNetCurrent plus OtherReceivablesNet No authoritative reference available. false 77 Other Current Assets 2 nee_OtherCurrentAssets nee false debit instant AssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivables false false false false false false false false false false false false 1 false true false false 111000000 111 false false false 2 false false false false 0 0 false false false 3 false true false false 111000000 111 false false false 4 false false false false 0 0 false false false 5 false true false false 4000000 4 false false false xbrli:monetaryItemType monetary AssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivables No authoritative reference available. false 78 Assets Current 2 us-gaap_AssetsCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 778000000 778 false false false 2 false false false false 0 0 false false false 3 false true false false 778000000 778 false false false 4 false false false false 0 0 false false false 5 false true false false 457000000 457 false false false xbrli:monetaryItemType monetary Sum 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 false 79 Other Assets 2 us-gaap_OtherAssetsNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 80 Investment in subsidiaries 2 us-gaap_EquityMethodInvestments us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 13299000000 13299 false false false 2 false false false false 0 0 false false false 3 false true false false 13299000000 13299 false false false 4 false false false false 0 0 false false false 5 false true false false 12785000000 12785 false false false xbrli:monetaryItemType monetary This 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. false 81 Other 2 us-gaap_OtherAssets us-gaap true debit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 378000000 378 false false false 2 false false false false 0 0 false false false 3 false true false false 378000000 378 false false false 4 false false false false 0 0 false false false 5 false true false false 557000000 557 false false false xbrli:monetaryItemType monetary Carrying 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 false 82 Assets Noncurrent 2 us-gaap_AssetsNoncurrent us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 13677000000 13677 false false false 2 false false false false 0 0 false false false 3 false true false false 13677000000 13677 false false false 4 false false false false 0 0 false false false 5 false true false false 13342000000 13342 false false false xbrli:monetaryItemType monetary Sum 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 false 83 Assets 2 us-gaap_Assets us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 14474000000 14474 false false false 2 false false false false 0 0 false false false 3 false true false false 14474000000 14474 false false false 4 false false false false 0 0 false false false 5 false true false false 13801000000 13801 false false false xbrli:monetaryItemType monetary Sum 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 false 84 CAPITALIZATION 2 nee_TotalCapitalizationAbstract nee false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 85 Common shareholders' equity 2 nee_TotalCommonShareholdersEquity nee false na instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 13529000000 13529 false false false 2 false false false false 0 0 false false false 3 false true false false 13529000000 13529 false false false 4 false false false false 0 0 false false false 5 false true false false 12967000000 12967 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 86 Long-term debt ($858 related to VIEs at June 30, 2010) 2 us-gaap_LongTermDebtNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 0 0 false false false xbrli:monetaryItemType monetary Sum 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 false 87 Total Capitalization 2 nee_TotalCapitalization nee false na instant The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. false false false false false false false false false false false false 1 false true false false 13529000000 13529 false false false 2 false false false false 0 0 false false false 3 false true false false 13529000000 13529 false false false 4 false false false false 0 0 false false false 5 false true false false 12967000000 12967 false false false xbrli:monetaryItemType monetary The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. No authoritative reference available. false 88 CURRENT LIABILITIES 2 us-gaap_LiabilitiesCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 89 Debt Due Within One Year 2 nee_DebtDueWithinOneYear nee false credit instant CommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrent false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 0 0 false false false xbrli:monetaryItemType monetary CommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrent No authoritative reference available. false 90 Accounts payable 2 us-gaap_AccountsPayableCurrentAndNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 6000000 6 false false false 2 false false false false 0 0 false false false 3 false true false false 6000000 6 false false false 4 false false false false 0 0 false false false 5 false true false false 0 0 false false false xbrli:monetaryItemType monetary Carrying 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 false 91 Other 2 nee_OtherCurrentLiabilities nee false na instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 471000000 471 false false false 2 false false false false 0 0 false false false 3 false true false false 471000000 471 false false false 4 false false false false 0 0 false false false 5 false true false false 417000000 417 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 92 Total current liabilities 2 us-gaap_LiabilitiesCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 477000000 477 false false false 2 false false false false 0 0 false false false 3 false true false false 477000000 477 false false false 4 false false false false 0 0 false false false 5 false true false false 417000000 417 false false false xbrli:monetaryItemType monetary Total 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 true 93 OTHER LIABILITIES AND DEFERRED CREDITS 2 us-gaap_LiabilitiesNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 94 Asset retirement obligations 2 us-gaap_AssetRetirementObligationsNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 0 0 false false false xbrli:monetaryItemType monetary Noncurrent 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 false 95 Accumulated deferred income taxes 2 us-gaap_DeferredTaxLiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 149000000 149 false false false 2 false false false false 0 0 false false false 3 false true false false 149000000 149 false false false 4 false false false false 0 0 false false false 5 false true false false 94000000 94 false false false xbrli:monetaryItemType monetary Represents 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 false 96 Regulatory liabilities 2 us-gaap_RegulatoryLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 15000000 15 false false false 2 false false false false 0 0 false false false 3 false true false false 15000000 15 false false false 4 false false false false 0 0 false false false 5 false true false false 16000000 16 false false false xbrli:monetaryItemType monetary The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 false 97 Other 2 us-gaap_OtherLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 304000000 304 false false false 2 false false false false 0 0 false false false 3 false true false false 304000000 304 false false false 4 false false false false 0 0 false false false 5 false true false false 307000000 307 false false false xbrli:monetaryItemType monetary Carrying 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 false 98 Liabilities Noncurrent 2 us-gaap_LiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 468000000 468 false false false 2 false false false false 0 0 false false false 3 false true false false 468000000 468 false false false 4 false false false false 0 0 false false false 5 false true false false 417000000 417 false false false xbrli:monetaryItemType monetary Total 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 false 100 TOTAL CAPITALIZATION AND LIABILITIES 2 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 14474000000 14474 false false false 2 false false false false 0 0 false false false 3 false true false false 14474000000 14474 false false false 4 false false false false 0 0 false false false 5 false true false false 13801000000 13801 false false false xbrli:monetaryItemType monetary Total 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 false 101 Condensed Consolidating Statements of Cash Flows 2 us-gaap_StatementOfCashFlowsAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 102 Net Cash Provided By Used In Operating Activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 487000000 487 false false false 4 false true false false 361000000 361 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 103 CASH FLOWS FROM INVESTING ACTIVITIES 2 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 104 Capital expenditures, independent power investments and nuclear fuel purchases 2 nee_CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases nee false credit duration CapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus... false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary CapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus OtherCapitalExpenditures No authoritative reference available. false 105 Capital contribution to FPL 2 nee_CapitalContributions nee false credit duration capital contribution to subsidiary false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 135000000 135 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary capital contribution to subsidiary No authoritative reference available. false 106 Cash grants under the American Recovery and Reinvestment Act of 2009 2 nee_CashGrantsUnderAmericanRecoveryAndReinvestmentActOf2009 nee false na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 107 Other Cash Flows From Investing Activities Net 2 nee_OtherCashFlowsFromInvestingActivitiesNet nee false debit duration NetCashProvidedByUsedInInvestingActivities minus... false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false -53000000 -53 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary NetCashProvidedByUsedInInvestingActivities minus CondensedFinancialStatementsCapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases minus SaleOfIndependentPowerInvestments No authoritative reference available. false 108 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -135000000 -135 false false false 4 false true false false -53000000 -53 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 109 CASH FLOWS FROM FINANCING ACTIVITIES 2 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 110 Issuances of long-term debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 111 Retirements of long-term debt 2 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 112 Sale of differential membership interests 2 nee_SaleOfDifferentialMembershipInterests nee false debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 113 Net change in short-term debt 2 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The net cash inflow (outflow) for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. 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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 false 115 Dividends on common stock 2 us-gaap_PaymentsOfDividends us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -410000000 -410 false false false 4 false true false false -382000000 -382 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 116 Proceeds From Payments For Other Financing Activities 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -11000000 -11 false false false 4 false true false false -9000000 -9 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 117 Net cash provided by financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -352000000 -352 false false false 4 false true false false -308000000 -308 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 true 118 Net increase (decrease) in cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 119 Cash and cash equivalents at beginning of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Includes 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 false 120 Cash and cash equivalents at end of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Includes 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 false 121 FPL Group Capital 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/summarizedfinancialinformationoffplgroupcapitaldetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 11 USD true false false false FPL Group Capital dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 12 USD true false false false FPL Group Capital dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 13 USD true false false false FPL Group Capital dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 14 USD true false false false FPL Group Capital dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 15 USD true false false false FPL Group Capital dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 122 Condensed Consolidating Statements of Income 2 us-gaap_IncomeStatementAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 123 Operating revenues 2 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 1013000000 1013 false false false 2 false true false false 949000000 949 false false false 3 false true false false 2310000000 2310 false false false 4 false true false false 2084000000 2084 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Aggregate 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 false 124 Operating Expenses 2 us-gaap_OperatingExpenses us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -804000000 -804 false false false 2 false true false false -740000000 -740 false false false 3 false true false false -1554000000 -1554 false false false 4 false true false false -1553000000 -1553 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Generally 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. false 125 Interest expense 2 nee_InterestExpenseAggregateExpenses nee false na duration The aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other... false false false false false false false false false false false terselabel false 1 false true false false -156000000 -156 false false false 2 false true false false -136000000 -136 false false false 3 false true false false -307000000 -307 false false false 4 false true false false -270000000 -270 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other borrowings, including debt related commitment fees and debt issuance costs. Amounts is reported net of interest capitalized in accordance with Statement of Financial Accounting Standard No. 34 and net of any allowance for borrowed used during construction in accordance with Statement of Financial Accounting Standard No. 71 Paragraph 15. No authoritative reference available. false 126 Other Income Deductions Net 2 nee_OtherIncomeDeductionsNet nee false debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 20000000 20 false false false 2 false true false false 40000000 40 false false false 3 false true false false 86000000 86 false false false 4 false true false false 31000000 31 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 127 Income (loss) before income taxes 2 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 73000000 73 false false false 2 false true false false 113000000 113 false false false 3 false true false false 535000000 535 false false false 4 false true false false 292000000 292 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 true 128 Income tax expense (benefit) 2 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false -79000000 -79 false false false 2 false true false false -54000000 -54 false false false 3 false true false false 11000000 11 false false false 4 false true false false -112000000 -112 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 129 Net income (loss) 2 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 152000000 152 false false false 2 false true false false 167000000 167 false false false 3 false true false false 524000000 524 false false false 4 false true false false 404000000 404 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 130 Property, Plant and Equipment 2 us-gaap_PropertyPlantAndEquipmentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 131 Electric utility plant in service and other property 2 us-gaap_PropertyPlantAndEquipmentGross us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 20278000000 20278 false false false 2 false false false false 0 0 false false false 3 false true false false 20278000000 20278 false false false 4 false false false false 0 0 false false false 5 false true false false 19185000000 19185 false false false xbrli:monetaryItemType monetary Carrying 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 false 132 Less accumulated depreciation and amortization 2 nee_AccumulatedDepreciationAndAmortization nee false na instant The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including... false false false false false false false false false false false verboselabel false 1 false true false false -3842000000 -3842 false false false 2 false false false false 0 0 false false false 3 false true false false -3842000000 -3842 false false false 4 false false false false 0 0 false false false 5 false true false false -3513000000 -3513 false false false xbrli:monetaryItemType monetary The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including nuclear fuel, but not including land) that has been recognized in the income statement. No authoritative reference available. false 133 Total property, plant and equipment - net 2 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 16436000000 16436 false false false 2 false false false false 0 0 false false false 3 false true false false 16436000000 16436 false false false 4 false false false false 0 0 false false false 5 false true false false 15672000000 15672 false false false xbrli:monetaryItemType monetary Tangible 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 false 134 Current assets 2 us-gaap_AssetsCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 135 Cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 450000000 450 false false false 2 false true false false 177000000 177 false false false 3 false true false false 450000000 450 false false false 4 false true false false 177000000 177 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Includes 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 false 136 Receivables 2 nee_Receivables nee false debit instant AccountsReceivableNetCurrent plus OtherReceivablesNet false false false false false false false false false false false false 1 false true false false 869000000 869 false false false 2 false false false false 0 0 false false false 3 false true false false 869000000 869 false false false 4 false false false false 0 0 false false false 5 false true false false 1247000000 1247 false false false xbrli:monetaryItemType monetary AccountsReceivableNetCurrent plus OtherReceivablesNet No authoritative reference available. false 137 Other Current Assets 2 nee_OtherCurrentAssets nee false debit instant AssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivables false false false false false false false false false false false false 1 false true false false 1493000000 1493 false false false 2 false false false false 0 0 false false false 3 false true false false 1493000000 1493 false false false 4 false false false false 0 0 false false false 5 false true false false 1258000000 1258 false false false xbrli:monetaryItemType monetary AssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivables No authoritative reference available. false 138 Assets Current 2 us-gaap_AssetsCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 2812000000 2812 false false false 2 false false false false 0 0 false false false 3 false true false false 2812000000 2812 false false false 4 false false false false 0 0 false false false 5 false true false false 2661000000 2661 false false false xbrli:monetaryItemType monetary Sum 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 false 139 Other Assets 2 us-gaap_OtherAssetsNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 140 Investment in subsidiaries 2 us-gaap_EquityMethodInvestments us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 0 0 false false false xbrli:monetaryItemType monetary This 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. false 141 Other 2 us-gaap_OtherAssets us-gaap true debit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 3507000000 3507 false false false 2 false false false false 0 0 false false false 3 false true false false 3507000000 3507 false false false 4 false false false false 0 0 false false false 5 false true false false 3257000000 3257 false false false xbrli:monetaryItemType monetary Carrying 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 false 142 Assets Noncurrent 2 us-gaap_AssetsNoncurrent us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 3507000000 3507 false false false 2 false false false false 0 0 false false false 3 false true false false 3507000000 3507 false false false 4 false false false false 0 0 false false false 5 false true false false 3257000000 3257 false false false xbrli:monetaryItemType monetary Sum 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 false 143 Assets 2 us-gaap_Assets us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 22755000000 22755 false false false 2 false false false false 0 0 false false false 3 false true false false 22755000000 22755 false false false 4 false false false false 0 0 false false false 5 false true false false 21590000000 21590 false false false xbrli:monetaryItemType monetary Sum 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 false 144 CAPITALIZATION 2 nee_TotalCapitalizationAbstract nee false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 145 Common shareholders' equity 2 nee_TotalCommonShareholdersEquity nee false na instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 4272000000 4272 false false false 2 false false false false 0 0 false false false 3 false true false false 4272000000 4272 false false false 4 false false false false 0 0 false false false 5 false true false false 4349000000 4349 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 146 Long-term debt ($858 related to VIEs at June 30, 2010) 2 us-gaap_LongTermDebtNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 10879000000 10879 false false false 2 false false false false 0 0 false false false 3 false true false false 10879000000 10879 false false false 4 false false false false 0 0 false false false 5 false true false false 10506000000 10506 false false false xbrli:monetaryItemType monetary Sum 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 false 147 Total Capitalization 2 nee_TotalCapitalization nee false na instant The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. false false false false false false false false false false false false 1 false true false false 15151000000 15151 false false false 2 false false false false 0 0 false false false 3 false true false false 15151000000 15151 false false false 4 false false false false 0 0 false false false 5 false true false false 14855000000 14855 false false false xbrli:monetaryItemType monetary The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. No authoritative reference available. false 148 CURRENT LIABILITIES 2 us-gaap_LiabilitiesCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 149 Debt Due Within One Year 2 nee_DebtDueWithinOneYear nee false credit instant CommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrent false false false false false false false false false false false false 1 false true false false 2090000000 2090 false false false 2 false false false false 0 0 false false false 3 false true false false 2090000000 2090 false false false 4 false false false false 0 0 false false false 5 false true false false 1729000000 1729 false false false xbrli:monetaryItemType monetary CommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrent No authoritative reference available. false 150 Accounts payable 2 us-gaap_AccountsPayableCurrentAndNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 438000000 438 false false false 2 false false false false 0 0 false false false 3 false true false false 438000000 438 false false false 4 false false false false 0 0 false false false 5 false true false false 453000000 453 false false false xbrli:monetaryItemType monetary Carrying 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 false 151 Other 2 nee_OtherCurrentLiabilities nee false na instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 1212000000 1212 false false false 2 false false false false 0 0 false false false 3 false true false false 1212000000 1212 false false false 4 false false false false 0 0 false false false 5 false true false false 1170000000 1170 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 152 Total current liabilities 2 us-gaap_LiabilitiesCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 3740000000 3740 false false false 2 false false false false 0 0 false false false 3 false true false false 3740000000 3740 false false false 4 false false false false 0 0 false false false 5 false true false false 3352000000 3352 false false false xbrli:monetaryItemType monetary Total 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 true 153 OTHER LIABILITIES AND DEFERRED CREDITS 2 us-gaap_LiabilitiesNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 154 Asset retirement obligations 2 us-gaap_AssetRetirementObligationsNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 566000000 566 false false false 2 false false false false 0 0 false false false 3 false true false false 566000000 566 false false false 4 false false false false 0 0 false false false 5 false true false false 585000000 585 false false false xbrli:monetaryItemType monetary Noncurrent 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 false 155 Accumulated deferred income taxes 2 us-gaap_DeferredTaxLiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 1512000000 1512 false false false 2 false false false false 0 0 false false false 3 false true false false 1512000000 1512 false false false 4 false false false false 0 0 false false false 5 false true false false 1318000000 1318 false false false xbrli:monetaryItemType monetary Represents 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 false 156 Regulatory liabilities 2 us-gaap_RegulatoryLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 0 0 false false false xbrli:monetaryItemType monetary The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 false 157 Other 2 us-gaap_OtherLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 1786000000 1786 false false false 2 false false false false 0 0 false false false 3 false true false false 1786000000 1786 false false false 4 false false false false 0 0 false false false 5 false true false false 1480000000 1480 false false false xbrli:monetaryItemType monetary Carrying 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 false 158 Liabilities Noncurrent 2 us-gaap_LiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 3864000000 3864 false false false 2 false false false false 0 0 false false false 3 false true false false 3864000000 3864 false false false 4 false false false false 0 0 false false false 5 false true false false 3383000000 3383 false false false xbrli:monetaryItemType monetary Total 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 false 160 TOTAL CAPITALIZATION AND LIABILITIES 2 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 22755000000 22755 false false false 2 false false false false 0 0 false false false 3 false true false false 22755000000 22755 false false false 4 false false false false 0 0 false false false 5 false true false false 21590000000 21590 false false false xbrli:monetaryItemType monetary Total 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 false 161 Condensed Consolidating Statements of Cash Flows 2 us-gaap_StatementOfCashFlowsAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 162 Net Cash Provided By Used In Operating Activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 723000000 723 false false false 4 false true false false 833000000 833 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 163 CASH FLOWS FROM INVESTING ACTIVITIES 2 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 164 Capital expenditures, independent power investments and nuclear fuel purchases 2 nee_CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases nee false credit duration CapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus... false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -1271000000 -1271 false false false 4 false true false false -1196000000 -1196 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary CapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus OtherCapitalExpenditures No authoritative reference available. false 165 Capital contribution to FPL 2 nee_CapitalContributions nee false credit duration capital contribution to subsidiary false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary capital contribution to subsidiary No authoritative reference available. false 166 Cash grants under the American Recovery and Reinvestment Act of 2009 2 nee_CashGrantsUnderAmericanRecoveryAndReinvestmentActOf2009 nee false na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 426000000 426 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 167 Other Cash Flows From Investing Activities Net 2 nee_OtherCashFlowsFromInvestingActivitiesNet nee false debit duration NetCashProvidedByUsedInInvestingActivities minus... false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -15000000 -15 false false false 4 false true false false -28000000 -28 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary NetCashProvidedByUsedInInvestingActivities minus CondensedFinancialStatementsCapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases minus SaleOfIndependentPowerInvestments No authoritative reference available. false 168 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -860000000 -860 false false false 4 false true false false -1224000000 -1224 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 169 CASH FLOWS FROM FINANCING ACTIVITIES 2 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 170 Issuances of long-term debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1071000000 1071 false false false 4 false true false false 1879000000 1879 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 171 Retirements of long-term debt 2 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -247000000 -247 false false false 4 false true false false -1069000000 -1069 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 172 Sale of differential membership interests 2 nee_SaleOfDifferentialMembershipInterests nee false debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 190000000 190 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 173 Net change in short-term debt 2 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -125000000 -125 false false false 4 false true false false -718000000 -718 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 174 Issuances of common stock 2 us-gaap_ProceedsFromIssuanceOfCommonStock us-gaap true debit duration No definition available. false false false false false false false false false false false label false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 175 Dividends on common stock 2 us-gaap_PaymentsOfDividends us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 176 Proceeds From Payments For Other Financing Activities 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -458000000 -458 false false false 4 false true false false 62000000 62 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 177 Net cash provided by financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 431000000 431 false false false 4 false true false false 154000000 154 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 true 178 Net increase (decrease) in cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 294000000 294 false false false 4 false true false false -237000000 -237 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 179 Cash and cash equivalents at beginning of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 156000000 156 false false false 4 false true false false 414000000 414 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Includes 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 false 180 Cash and cash equivalents at end of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false true false false 450000000 450 false false false 2 false true false false 177000000 177 false false false 3 false true false false 450000000 450 false false false 4 false true false false 177000000 177 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Includes 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 false 181 Other Consolidated Entity And Consolidation Eliminations [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/summarizedfinancialinformationoffplgroupcapitaldetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 16 USD true false false false Other Consolidated Entity And Consolidation Eliminations [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi nee_OtherConsolidatedEntityAndConsolidationEliminationsMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 17 USD true false false false Other Consolidated Entity And Consolidation Eliminations [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi nee_OtherConsolidatedEntityAndConsolidationEliminationsMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 18 USD true false false false Other Consolidated Entity And Consolidation Eliminations [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi nee_OtherConsolidatedEntityAndConsolidationEliminationsMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 19 USD true false false false Other Consolidated Entity And Consolidation Eliminations [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi nee_OtherConsolidatedEntityAndConsolidationEliminationsMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 20 USD true false false false Other Consolidated Entity And Consolidation Eliminations [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi nee_OtherConsolidatedEntityAndConsolidationEliminationsMember dei_LegalEntityAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 182 Condensed Consolidating Statements of Income 2 us-gaap_IncomeStatementAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 183 Operating revenues 2 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 2578000000 2578 [1] false false false 2 false true false false 2862000000 2862 [1] false false false 3 false true false false 4903000000 4903 false false false 4 false true false false 5431000000 5431 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Aggregate 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 false 184 Operating Expenses 2 us-gaap_OperatingExpenses us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 2076000000 2076 [1] false false false 2 false true false false -2465000000 -2465 false false false 3 false true false false -4009000000 -4009 false false false 4 false true false false -4773000000 -4773 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Generally 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. false 185 Interest expense 2 nee_InterestExpenseAggregateExpenses nee false na duration The aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other... false false false false false false false false false false false terselabel false 1 false true false false -87000000 -87 [1] false false false 2 false true false false -75000000 -75 [1] false false false 3 false true false false -170000000 -170 false false false 4 false true false false -148000000 -148 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other borrowings, including debt related commitment fees and debt issuance costs. Amounts is reported net of interest capitalized in accordance with Statement of Financial Accounting Standard No. 34 and net of any allowance for borrowed used during construction in accordance with Statement of Financial Accounting Standard No. 71 Paragraph 15. No authoritative reference available. false 186 Other Income Deductions Net 2 nee_OtherIncomeDeductionsNet nee false debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 415000000 415 [1] false false false 2 false true false false -371000000 -371 false false false 3 false true false false -974000000 -974 false false false 4 false true false false -725000000 -725 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 187 Income (loss) before income taxes 2 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 0 0 [1] false false false 2 false true false false -49000000 -49 [1] false false false 3 false true false false -250000000 -250 false false false 4 false true false false -215000000 -215 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 true 188 Income tax expense (benefit) 2 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 152000000 152 [1] false false false 2 false true false false 118000000 118 [1] false false false 3 false true false false 274000000 274 false false false 4 false true false false 189000000 189 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 189 Net income (loss) 2 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -152000000 -152 [1] false false false 2 false true false false -167000000 -167 [1] false false false 3 false true false false -524000000 -524 false false false 4 false true false false -404000000 -404 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 190 Property, Plant and Equipment 2 us-gaap_PropertyPlantAndEquipmentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 191 Electric utility plant in service and other property 2 us-gaap_PropertyPlantAndEquipmentGross us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 31883000000 31883 false false false 2 false false false false 0 0 false false false 3 false true false false 31883000000 31883 false false false 4 false false false false 0 0 false false false 5 false true false false 30982000000 30982 false false false xbrli:monetaryItemType monetary Carrying 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 false 192 Less accumulated depreciation and amortization 2 nee_AccumulatedDepreciationAndAmortization nee false na instant The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including... false false false false false false false false false false false verboselabel false 1 false true false false -10760000000 -10760 false false false 2 false false false false 0 0 false false false 3 false true false false -10760000000 -10760 false false false 4 false false false false 0 0 false false false 5 false true false false -10578000000 -10578 false false false xbrli:monetaryItemType monetary The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, including nuclear fuel, but not including land) that has been recognized in the income statement. No authoritative reference available. false 193 Total property, plant and equipment - net 2 us-gaap_PropertyPlantAndEquipmentNet us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 21123000000 21123 false false false 2 false false false false 0 0 false false false 3 false true false false 21123000000 21123 false false false 4 false false false false 0 0 false false false 5 false true false false 20404000000 20404 false false false xbrli:monetaryItemType monetary Tangible 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 false 194 Current assets 2 us-gaap_AssetsCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 195 Cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 379000000 379 false false false 2 false true false false 99000000 99 false false false 3 false true false false 379000000 379 false false false 4 false true false false 99000000 99 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Includes 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 false 196 Receivables 2 nee_Receivables nee false debit instant AccountsReceivableNetCurrent plus OtherReceivablesNet false false false false false false false false false false false false 1 false true false false 489000000 489 false false false 2 false false false false 0 0 false false false 3 false true false false 489000000 489 false false false 4 false false false false 0 0 false false false 5 false true false false 547000000 547 false false false xbrli:monetaryItemType monetary AccountsReceivableNetCurrent plus OtherReceivablesNet No authoritative reference available. false 197 Other Current Assets 2 nee_OtherCurrentAssets nee false debit instant AssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivables false false false false false false false false false false false false 1 false true false false 841000000 841 false false false 2 false false false false 0 0 false false false 3 false true false false 841000000 841 false false false 4 false false false false 0 0 false false false 5 false true false false 590000000 590 false false false xbrli:monetaryItemType monetary AssetsCurrent minus CashAndCashEquivalentsAtCarryingValue minus CondensedFinancialStatementsReceivables No authoritative reference available. false 198 Assets Current 2 us-gaap_AssetsCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 1709000000 1709 false false false 2 false false false false 0 0 false false false 3 false true false false 1709000000 1709 false false false 4 false false false false 0 0 false false false 5 false true false false 1219000000 1219 false false false xbrli:monetaryItemType monetary Sum 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 false 199 Other Assets 2 us-gaap_OtherAssetsNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 200 Investment in subsidiaries 2 us-gaap_EquityMethodInvestments us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false -13299000000 -13299 false false false 2 false false false false 0 0 false false false 3 false true false false -13299000000 -13299 false false false 4 false false false false 0 0 false false false 5 false true false false -12785000000 -12785 false false false xbrli:monetaryItemType monetary This 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. false 201 Other 2 us-gaap_OtherAssets us-gaap true debit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 4447000000 4447 false false false 2 false false false false 0 0 false false false 3 false true false false 4447000000 4447 false false false 4 false false false false 0 0 false false false 5 false true false false 4229000000 4229 false false false xbrli:monetaryItemType monetary Carrying 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 false 202 Assets Noncurrent 2 us-gaap_AssetsNoncurrent us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false -8852000000 -8852 false false false 2 false false false false 0 0 false false false 3 false true false false -8852000000 -8852 false false false 4 false false false false 0 0 false false false 5 false true false false -8556000000 -8556 false false false xbrli:monetaryItemType monetary Sum 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 false 203 Assets 2 us-gaap_Assets us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 false true false false 13980000000 13980 false false false 2 false false false false 0 0 false false false 3 false true false false 13980000000 13980 false false false 4 false false false false 0 0 false false false 5 false true false false 13067000000 13067 false false false xbrli:monetaryItemType monetary Sum 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 false 204 CAPITALIZATION 2 nee_TotalCapitalizationAbstract nee false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 205 Common shareholders' equity 2 nee_TotalCommonShareholdersEquity nee false na instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false -4272000000 -4272 false false false 2 false false false false 0 0 false false false 3 false true false false -4272000000 -4272 false false false 4 false false false false 0 0 false false false 5 false true false false -4349000000 -4349 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 206 Long-term debt ($858 related to VIEs at June 30, 2010) 2 us-gaap_LongTermDebtNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 6292000000 6292 false false false 2 false false false false 0 0 false false false 3 false true false false 6292000000 6292 false false false 4 false false false false 0 0 false false false 5 false true false false 5794000000 5794 false false false xbrli:monetaryItemType monetary Sum 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 false 207 Total Capitalization 2 nee_TotalCapitalization nee false na instant The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. false false false false false false false false false false false false 1 false true false false 2020000000 2020 false false false 2 false false false false 0 0 false false false 3 false true false false 2020000000 2020 false false false 4 false false false false 0 0 false false false 5 false true false false 1445000000 1445 false false false xbrli:monetaryItemType monetary The sum of Stockholders' Equity and Long-term debt, Noncurrent, Total, as defined above. No authoritative reference available. false 208 CURRENT LIABILITIES 2 us-gaap_LiabilitiesCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 209 Debt Due Within One Year 2 nee_DebtDueWithinOneYear nee false credit instant CommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrent false false false false false false false false false false false false 1 false true false false 932000000 932 false false false 2 false false false false 0 0 false false false 3 false true false false 932000000 932 false false false 4 false false false false 0 0 false false false 5 false true false false 860000000 860 false false false xbrli:monetaryItemType monetary CommercialPaper plus NotesPayableAsOfBalanceSheetDate plus LongTermDebtCurrent No authoritative reference available. false 210 Accounts payable 2 us-gaap_AccountsPayableCurrentAndNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 872000000 872 false false false 2 false false false false 0 0 false false false 3 false true false false 872000000 872 false false false 4 false false false false 0 0 false false false 5 false true false false 539000000 539 false false false xbrli:monetaryItemType monetary Carrying 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 false 211 Other 2 nee_OtherCurrentLiabilities nee false na instant No definition available. false false false false false false false false false false false terselabel false 1 false true false false 1105000000 1105 false false false 2 false false false false 0 0 false false false 3 false true false false 1105000000 1105 false false false 4 false false false false 0 0 false false false 5 false true false false 1281000000 1281 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 212 Total current liabilities 2 us-gaap_LiabilitiesCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 2909000000 2909 false false false 2 false false false false 0 0 false false false 3 false true false false 2909000000 2909 false false false 4 false false false false 0 0 false false false 5 false true false false 2680000000 2680 false false false xbrli:monetaryItemType monetary Total 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 true 213 OTHER LIABILITIES AND DEFERRED CREDITS 2 us-gaap_LiabilitiesNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 214 Asset retirement obligations 2 us-gaap_AssetRetirementObligationsNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 1881000000 1881 false false false 2 false false false false 0 0 false false false 3 false true false false 1881000000 1881 false false false 4 false false false false 0 0 false false false 5 false true false false 1833000000 1833 false false false xbrli:monetaryItemType monetary Noncurrent 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 false 215 Accumulated deferred income taxes 2 us-gaap_DeferredTaxLiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 3581000000 3581 false false false 2 false false false false 0 0 false false false 3 false true false false 3581000000 3581 false false false 4 false false false false 0 0 false false false 5 false true false false 3448000000 3448 false false false xbrli:monetaryItemType monetary Represents 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 false 216 Regulatory liabilities 2 us-gaap_RegulatoryLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 3110000000 3110 false false false 2 false false false false 0 0 false false false 3 false true false false 3110000000 3110 false false false 4 false false false false 0 0 false false false 5 false true false false 3166000000 3166 false false false xbrli:monetaryItemType monetary The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 71 -Paragraph 11 false 217 Other 2 us-gaap_OtherLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 479000000 479 false false false 2 false false false false 0 0 false false false 3 false true false false 479000000 479 false false false 4 false false false false 0 0 false false false 5 false true false false 495000000 495 false false false xbrli:monetaryItemType monetary Carrying 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 false 218 Liabilities Noncurrent 2 us-gaap_LiabilitiesNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 9051000000 9051 false false false 2 false false false false 0 0 false false false 3 false true false false 9051000000 9051 false false false 4 false false false false 0 0 false false false 5 false true false false 8942000000 8942 false false false xbrli:monetaryItemType monetary Total 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 false 220 TOTAL CAPITALIZATION AND LIABILITIES 2 us-gaap_LiabilitiesAndStockholdersEquity us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 13980000000 13980 false false false 2 false false false false 0 0 false false false 3 false true false false 13980000000 13980 false false false 4 false false false false 0 0 false false false 5 false true false false 13067000000 13067 false false false xbrli:monetaryItemType monetary Total 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 false 221 Condensed Consolidating Statements of Cash Flows 2 us-gaap_StatementOfCashFlowsAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 222 Net Cash Provided By Used In Operating Activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 538000000 538 false false false 4 false true false false 950000000 950 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 223 CASH FLOWS FROM INVESTING ACTIVITIES 2 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 224 Capital expenditures, independent power investments and nuclear fuel purchases 2 nee_CapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases nee false credit duration CapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus... false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -1486000000 -1486 false false false 4 false true false false -1249000000 -1249 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary CapitalExpendituresOfFpl plus IndependentPowerInvestments plus PaymentsForProceedsFromNuclearFuel plus OtherCapitalExpenditures No authoritative reference available. false 225 Capital contribution to FPL 2 nee_CapitalContributions nee false credit duration capital contribution to subsidiary false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -135000000 -135 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary capital contribution to subsidiary No authoritative reference available. false 226 Cash grants under the American Recovery and Reinvestment Act of 2009 2 nee_CashGrantsUnderAmericanRecoveryAndReinvestmentActOf2009 nee false na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 85000000 85 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 227 Other Cash Flows From Investing Activities Net 2 nee_OtherCashFlowsFromInvestingActivitiesNet nee false debit duration NetCashProvidedByUsedInInvestingActivities minus... false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -22000000 -22 false false false 4 false true false false 105000000 105 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary NetCashProvidedByUsedInInvestingActivities minus CondensedFinancialStatementsCapitalExpendituresIndependentPowerInvestmentsAndNuclearFuelPurchases minus SaleOfIndependentPowerInvestments No authoritative reference available. false 228 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -1288000000 -1288 false false false 4 false true false false -1144000000 -1144 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 229 CASH FLOWS FROM FINANCING ACTIVITIES 2 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 230 Issuances of long-term debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 514000000 514 false false false 4 false true false false 493000000 493 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 231 Retirements of long-term debt 2 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -22000000 -22 false false false 4 false true false false -245000000 -245 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 232 Sale of differential membership interests 2 nee_SaleOfDifferentialMembershipInterests nee false debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 233 Net change in short-term debt 2 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 71000000 71 false false false 4 false true false false -25000000 -25 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 234 Issuances of common stock 2 us-gaap_ProceedsFromIssuanceOfCommonStock us-gaap true debit duration No definition available. false false false false false false false false false false false label false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 235 Dividends on common stock 2 us-gaap_PaymentsOfDividends us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 236 Proceeds From Payments For Other Financing Activities 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 484000000 484 false false false 4 false true false false -51000000 -51 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 237 Net cash provided by financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1047000000 1047 false false false 4 false true false false 172000000 172 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 true 238 Net increase (decrease) in cash and cash equivalents 2 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 297000000 297 false false false 4 false true false false -22000000 -22 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The 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 false 239 Cash and cash equivalents at beginning of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 82000000 82 false false false 4 false true false false 121000000 121 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Includes 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 false 240 Cash and cash equivalents at end of period 2 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 true true false false 379000000 379 false false false 2 true true false false 99000000 99 false false false 3 true true false false 379000000 379 false false false 4 true true false false 99000000 99 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Includes 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. 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