beatandraise : SEC Filings Research with AI

beatandraise.com

2.2.0.25truefalse009025 - Disclosure - Employee Retirement Benefits - Additional Disclosures (Details)truefalseIn Millions, unless otherwise specifiedfalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $c00323http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-12-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u001Standardhttp://www.xb rl.org/2003/instancepurexbrli0u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u004Standardhttp://nexteraenergyresources.com/20101231mWnee0USDUSD$2falsefalseUSDfalsefalse1/1/2009 - 12/31/2009 USD ($) USD ($) / shares $c00022http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-12-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0u003Dividehttp://www.xbrl. org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalseUSDfalsefalse1/1/2008 - 12/31/2008 USD ($) USD ($) / shares $c00000http://www.sec.gov/CIK0000753308duration2008-01-01T00:00:002008-12-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u003Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli 0u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$5true0us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbst ractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseComponents of net periodic benefit income (cost) recognized in OCI [Abstract]6false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse20000002falsetruefalsefalsefalse2truefalsefals e2200000022falsetruefalsefalsefalse3truefalsefalse-167000000-167falsetruefalsefalsefalseMonetary xbrli:monetaryItemTypemonetaryNet changes to accumulated comprehensive income during the period related to benefit plans, after tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 22, 26 truefalseTotal10true0us-gaap_DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefal sefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseEmployee contribution plans [Abstract]11false0us-gaap_DefinedContributionPlanCostRecognizedus-gaaptrued ebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse3400000034falsefalsefalsefalsefalse2truefalsefalse3800000038falsefalsefalsefalsefalse3truefalsefalse3700000037falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the cost recognized during the period for defined contribution plans.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 11 falsefalseDefined contribution expense12false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] 1/1/2010 - 12/31/2010 USD ($) $c00338http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-12-31T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberu000Standardhttp://w ww.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$5falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] 1/1/2009 - 12/31/2009 USD ($) $c00032http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-12-31T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberu000Standardhttp://w ww.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$6falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] 1/1/2008 - 12/31/2008 USD ($) $c00008http://www.sec.gov/CIK0000753308duration2008-01-01T00:00:002008-12-31T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberu000Standardhttp://w ww.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member]13true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse0 0falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]14false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse32330000003233falsefalsefalsefalsefalse2truefalsefalse30280000003028falsefalsefalsefalsefalse3truefalsefalse25030000002503falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value15true0us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseExpected benefit payments, net of government drug subsidy [Abstract]16false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearOneus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse173000000173falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 1.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse201117false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearTwous-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefals efalse167000000167falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 2.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse201218false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearThreeus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefa lsefalse169000000169falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 3.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse201319false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearFourus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefal sefalse163000000163falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 4.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse201420false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearFiveus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefal sefalse159000000159falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 5.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse201521false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInFiveFiscalYearsThereafterus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse814000000814falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse2016 - 202022true0us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNet periodic benefit (income) cost [Abstract]23false0us-gaap_DefinedBenefitPlanServiceCostus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse5900000059falsefalsefalsefalsefalse2truefalsefalse5100000051falsefalsefalsefalsefalse3truefalsefalse5400000054falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h falsefalseService cost24false0us-gaap_DefinedBenefitPlanInterestCostus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse102000000102falsefalsefalsefalsefalse2truefalsefalse109000000109falsefalsefalsefalsefalse3truefalse false102000000102falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h falsefalseInterest cost25false0us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssetsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-241000000-241falsefalsefalsefalsefalse2truefalsefalse-239000000-239falsefalsefalsefalsefalse3truefalsefalse-240000000-240falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAn amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.Reference 1: http://www.xbrl.org/2003/r ole/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseExpected return on plan assets26false0us-gaap_DefinedBenefitPlanAmortizationOfTransitionObligationsAssetsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the transition obligation or asset recognized in net periodic benefit cost.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseAmortization of transition obligation27false0us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCreditus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-3000000-3falsefalsefalsefalsefalse2truefalsefalse-3000000-3falsefalsefalsefalsefalse3truefalsefalse-4000000-4falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseAmortization of prior service benefit28false0us-gaap_DefinedBenefitPlanAmortizationOfGainsLossesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse10000001falsefalsefalsefalsefalse2truefalsefalse-23000000-23falsefalsefalsefalsefalse3true falsefalse-29000000-29falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of gains or losses recognized in net periodic benefit costReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseAmortization of gains29false0us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse10000001falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of net (gain) loss recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-s um cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts to cover vested benefits.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 88 -Paragraph 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseSERP settlements30false0us-gaap_DefinedBenefitPlanSpecialTerminationBenefitsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse1300000013[1]falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of increase related to special termination benefits offered to and accepted by employees in connection with their termination of employment that are only offered for a short period of time. A situation involving termination benefits may also involve a curtailment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 88 -Paragraph 15 falsefalseSpecial termination benefits31false0us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-68000000-68falsefalsefalsefalsefalse2truefalsefalse-105000000-105falsefalsefalsefalsefalse3truefalsefalse-117000000-117falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h truefalseNet periodic benefit (income) cost32true0us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3fa lsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseComponents of net periodic benefit income (cost) recognized in OCI [Abstract]33false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditAris ingDuringPeriodNetOfTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-1000000-1falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cost of benefit improvement resulting from a plan amendment that occurred during the period, after tax. The cost has not been recognized in net periodic benefit cost pursuant to FAS 87 and 106. A plan amendment includes provisions that grant increased benefits based on services rendered in prior periods.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 52 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 25 falsefalsePrior service cost34false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1 truefalsefalse10000001falsefalsefalsefalsefalse2truefalsefalse3800000038falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe accumulated change in the value of either the projected benefit obligation or the plans assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost pursuant to FAS 87 and 106, after tax.Referen ce 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 falsefalseNet gains (losses) (net of none, $24 tax expense, $1 tax expense and $7 tax benefit, respectively)35false0nee_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeTransitionObligationNetOfTaxneefalsedebitdurationThe amount of transition obligation recognized in other comprehensive income during the period related to retirement benefit...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of transition obligation recognized in other comprehensive income during the period related to retirement benefit plans. The amount shown is net of tax.No authoritative reference available.falsefalseTransition obligation36false0us-gaap_OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-1000000-1falsefalsefalsefalsefalse2truefalsefalse-1000000-1falsefalsefals efalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe adjustment out of other comprehensive income for prior service costs recognized as a component of net period benefit cost during the period, after tax.Reference 1: http://www.xbrl.org/2003/role/ presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 52 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 falsefalseAmortization of prior service benefit37false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-4000000-4falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe adjustment out of other comprehensive income for actuarial gains (losses) recognized as a component of net periodic benefit cost during the period, after taxReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d falsefalseAmortization of net gains (net of $3 tax benefit)38false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefa lsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe adjustment out of other comprehensive income for the net transition asset or obligation recognized as a component of net periodic benefit cost during the period, after tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d falsefalseAmortization of transition obligation39false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel 1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse3200000032falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNet changes to accumulated comprehensive income during the period related to benefit plans, after tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 22, 26 truefalseTotal40true0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseTax effects on components of net periodic benefit income (cost) recognized in OCI [Abstract]41false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax us-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse2400000024falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect on the accumulated change in the value of either the projected benefit obligation or the plans assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost pursuant to FAS 87 and 106.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 falsefalseTax expense (benefit) related to net gains (losses)42false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-3000000-3falsefalsefalsefalse false3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFor each annual statement of income presented, the tax effect of the net gain or loss recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 falsefalseTax expense (benefit) related to amortization of net gains43true0nee_ComponentsOfNetPeriodicBenefitIncomeCostRecognizedInRegulatoryAssetsLiabilitiesAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseComponents of net periodic benefit (income) cost recognized in regulatory assets (liabilities) [Abstract]44false0nee_Defin edBenefitPlanNetPriorServiceCostCreditRecognizedInRegulatoryAssetsLiabilitiesneefalsedebitdurationThe prior service cost component of net periodic benefit (income) cost recognized during the period in regulatory assets...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse10000001falsefalsefalsefalsefalse2truefalsefalse20000002falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe prior service cost component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalsePrior service cost45false0nee_DefinedBenefitPlanUnrecognizedGainsLossesRecognizedIn RegulatoryAssetsLiabilitiesneefalsecreditdurationThe net gains (losses) component of net periodic benefit (income) cost recognized during the period in regulatory assets...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-35000000-35falsefalsefalsefalsefalse2truefalsefalse-159000000-159falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net gains (losses) component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseUnrecognized (gains) losses46false0nee_DefinedBenefitPlanTransitionObligationRecognizedInRegulatoryAssetsLiabilities neefalsedebitdurationThe transition obligation component of net periodic benefit (income) cost recognized during the period in regulatory assets...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe transition obligation component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseTransition obligation47false0nee_DefinedBenefitPlanAmortizationOfPriorServiceBenefitRecognizedInRegulatoryAssetsLiabilitiesneefalsecreditdurationThe amortization of prior service cost component of net periodic benefit (income) cost recognized during the period in...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse20000002falsefalsefalsefalsefalse2truefalsefalse30000003falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amortization of prior service cost component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseAmortization of prior service benefit48false0nee_DefinedBenefitPlanAmortizationOfNetGainsRecognizedInRegulatoryAssetsLiabilitiesnee falsecreditdurationThe amortization of net gains (losses) component of net periodic benefit (income) cost recognized during the period in...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse1600000016falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amortization of net gains (losses) component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseAmortization of net gains49false0nee_DefinedBenefitPlanAmortizationOfTransitionObligationRecognizedInRegulatoryAssetsLiabilitiesnee falsecreditdurationThe amortization of transition obligation component of net periodic benefit (income) cost recognized during the period in...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amortization of transition obligation component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseAmortization of transition obligation50false0nee_DefinedBenefitPlanComponentsOfNetPeriodicBenefitIncomeCostRecognizedInRegulatoryAssetsLiabilitiesneefalsecreditdurationTotal components of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-32000000-32falsefalsefalsefalsefalse2truefalsefalse-138000000-138falsefalsefalsefalsefalse3falsefalsefalse00< CurrencySymbol />falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal components of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.truefalseTotal51true0us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstractus-gaaptruena< PeriodType>durationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseWeighted-average assumptions used to determine net periodic benefit (income) cost [Abstract]52false0us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.0550.055falsefalsefalsefalsefalse2truetruefalse0.0690.069 falsefalsefalsefalsefalse3truetruefalse0.06250.0625falsefalsefalsefalsefalseOtherus-types:percentItemTypepureThe interest rate used to adjust for the time value of money.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j falsefalseDiscount rate (in hundredths)53false0us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.040.04falsefalsefalsefalsefalse2truetruefalse0.040.04falsefalsefalsefalsefalse< /Cell>3truetruefalse0.040.04falsefalsefalsefalsefalseOtherus-types:percentItemTypepureExpected rate of compensation increases (for pay-related plans).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j falsefalseSalary increase (in hundredths)54false0us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssetsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.07750.0775[2]falsefalsefalsefalsefalse2truetruefalse0.07750.0775[2]falsefalsefalsefalsefalse3truetruefalse0.07750.0775[2]falsefalsefalsefalsefalseOtherus-types:percentItemTypepureAn assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.Reference 1: http ://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j falsefalseExpected long-term rate of return (in hundredths)56false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse7falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Securities [Member] 12/31/2010 USD ($) $c00226http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity [Me mber]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8falsefal seUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Securities [Member] 12/31/2009 USD ($) $c00119http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity [Me mber]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$Other naNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Equity [Member]57true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse< IsReverseSign>falselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalse falsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]58false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse806000000806[3]falsefalsefalsefalsefalse2truefalsefalse424000000424[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Refer ence 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value66false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse< /IsRatio>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse9falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Securities [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] 12/31/2010 USD ($) $c00212http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity [Me mber]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseQuoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$10falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Securities [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] 12/31/2009 USD ($) $c00104http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity [Me mber]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseQuoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Equity [Member] | Quoted Prices in Active Markets for Identical Ass ets or Liabilities (Level 1) [Member]67true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]68false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse800000000800[3],[4]falsefalsefalse< hasSegments>falsefalse2truefalsefalse424000000424[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value69false0nee_ForeignInvestmentsIncludedInPlanAssetsneefalsedebitinstantThe amount of foreign investments included in plan assets.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse293000000293falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of foreign investments included in plan assets.No authoritative reference available.falsefalseForeign investments77false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse11falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Securities [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00215http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity [Me mber]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standard~~http://www.xbrl.org/2003/iso4217USDiso42170USDUSD~~$12falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Securities [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00107http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity [Me mber]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_EquitySecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standard~~http://www.xbrl.org/2003/iso4217USDiso42170USDUSD~~$~~OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Equity [Member] | Significant Other Observable Inputs (Level 2) [Member]~~~~78true~~0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]79false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse60000006[3]falsefalsefalsefalsefalse2true< /IsNumeric>falsefalse00[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value87false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse< /IsRatio>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse13falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Commingled Vehicles Member 12/31/2010 USD ($) $c00227http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity com mingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_EquityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$14falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Commingled Vehicles Member 12/31/2009 USD ($) $c00120http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity com mingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_EquityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$Oth ernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Equity commingled vehicles [Member]88true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefal sefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]89false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse680000000680[3]falsefalsefalsefalsefalse2truefalsefalse941000000941[3]falsefalsefalsefalsefalse3falsefalsefalse0< /NumericAmount>0falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reduct ions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value97false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse< /IsRatio>false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse15falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00216http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity com mingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_EquityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$16falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00108http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity com mingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_EquityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Equity commingled vehicles [Member] | Significant Other Observable Inputs (Level 2) [Me mber]98true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]99false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition avail able.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse669000000669[3],[5]falsefalsefalsefalse< hasScenarios>false2truefalsefalse941000000941[3],[6]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value100false0nee_ForeignInvestmentsIncludedInPlanAssetsneefalsedebitinstantThe amount of foreign investments included in plan assets.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse219000000219falsefalsefalsefalsefalse2truefalsefalse499000000499falsefalsefalsefalsefalse3 falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of foreign investments included in plan assets.No authoritative reference available.falsefalseForeign investments108false0n atruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse17falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Unobservable Inputs (Level 3) [Member] 12/31/2010 USD ($) $c00320http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity com mingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_EquityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Unobservable Inputs (Level 3) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000S tandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$18falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Unobservable Inputs (Level 3) [Member] 12/31/2009 USD ($) $c00117http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity com mingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_EquityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Unobservable Inputs (Level 3) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000S tandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Equity commingled vehicles [Member] | Significant Unobservable Inputs (Level 3) [Member]109true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse0 0falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]110false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1100000011[3]falsefalsefalsefalsefal se2truefalsefalse00[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value118false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse19falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Us Government And Municipal Bonds Member 12/31/2010 USD ($) $c00228http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseU.S. Gover nment and municipal bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_UsGovernmentAndMunicipalBondsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$20falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Us Government And Municipal Bonds Member 12/31/2009 USD ($) $c00121http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseU.S. Gover nment and municipal bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_UsGovernmentAndMunicipalBondsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | U.S. Government and municipal bonds [Member]119true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00f alsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]120false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse9500000095[3]falsefalsefalsefalsefalse2truefalsefalse107000000107[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligat ions may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value128false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse21falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Us Government And Municipal Bonds Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] 12/31/2010 USD ($) $c00213http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseU.S. Gover nment and municipal bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_UsGovernmentAndMunicipalBondsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseQuoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMember< UPS>u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$22falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Us Government And Municipal Bonds Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] 12/31/2009 USD ($) $c00105http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseU.S. Gover nment and municipal bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_UsGovernmentAndMunicipalBondsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseQuoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMember< UPS>u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | U.S. Government and municipal bonds [Member] | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]129true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]130false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse6000000060[3]falsefalsefalsefalsefalse2truefalsefalse7700000077[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value138false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse23falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Us Government And Municipal Bonds Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00217http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseU.S. Gover nment and municipal bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_UsGovernmentAndMunicipalBondsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$24falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Us Government And Municipal Bonds Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00109http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseU.S. Gover nment and municipal bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_UsGovernmentAndMunicipalBondsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | U.S. Government and municipal bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]139true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]140false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse3500000035[3]falsefalsefalsefalsefalse2truefalsefalse3000000030[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value148false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse25falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Corporate debt securities [Member] 12/31/2010 USD ($) $c00229http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseCorporate debt securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CorporateDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$26falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Corporate debt securities [Member] 12/31/2009 USD ($) $c00122http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseCorporate debt securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CorporateDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$Ot hernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Corporate debt securities [Member]149true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefa lsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]150false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse335000000335[3]falsefalsefalsefalsefalse2truefalsefalse399000000399[3]falsefalsefalsefalsefalse3falsefalsefalse 00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as redu ctions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value158false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse27falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Corporate debt securities [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00218http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseCorporate debt securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CorporateDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$28falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Corporate debt securities [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00110http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseCorporate debt securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CorporateDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Corporate debt securities [Member] | Significant Other Observable Inputs (Level 2) [Me mber]159true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]160false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition ava ilable.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse335000000335[3],[7]falsefalsefalsefalsefalse2truefalsefalse399000000399[3],[8]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value161false0nee_ForeignInvestmentsIncludedInPlanAssetsneefalsedebitinstantThe amount of foreign investments included in plan assets.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse4700000047falsefalsefalsefalsefalse2truefalsefalse4500000045falsefalsefalsefalsefalse3fals efalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of foreign investments included in plan assets.No authoritative reference available.falsefalseForeign investments169false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00 falsefalsefalsefalsefalse29falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Mortgage-backed securities [Member] 12/31/2010 USD ($) $c00230http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseMortgage-b acked securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$30falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Mortgage-backed securities [Member] 12/31/2009 USD ($) $c00123http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseMortgage-b acked securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Mortgage-backed securities [Member]170true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00false falsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]171false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse2630000002 63[3]falsefalsefalsefalsefalse2truefalsefalse361000000361[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value179false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse31falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Mortgage-backed securities [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00219http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseMortgage-b acked securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$32falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Mortgage-backed securities [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00111http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseMortgage-b acked securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Mortgage-backed securities [Member] | Significant Other Observable Inputs (Level 2) [Member]180true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse0< RoundedNumericAmount>0falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]181false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse263000000263[3]falsefalsefalsefalsefalse2truefalsefalse361000000361[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value189false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse33falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Debt Security Commingled Vehicles Member 12/31/2010 USD ($) $c00231http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseDebt secur ity commingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_DebtSecurityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$34< IsAbstractGroupTitle>falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Debt Security Commingled Vehicles Member 12/31/2009 USD ($) $c00124http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseDebt secur ity commingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_DebtSecurityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Debt security commingled vehicles [Member]190true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00false< /IsIndependantCurrency>falsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abs tract]191false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse744000000 744[3]falsefalsefalsefalsefalse2truefalsefalse503000000503[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligation s may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value199false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse35falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Debt Security Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00220http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseDebt secur ity commingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_DebtSecurityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$36falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Debt Security Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00112http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseDebt secur ity commingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_DebtSecurityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Debt security commingled vehicles [Member] | Significant Other Obse rvable Inputs (Level 2) [Member]200true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse 00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]201false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse744000000744[3],[9]falsefalsefalsefalsefalse2truefalsefalse503000000503[10],[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalse falsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value202false0nee_ForeignInvestmentsIncludedInPlanAssetsneefalsedebitinstantThe amount of foreign investments included in plan assets.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse5600000056falsefalsefalsefalsefalse2truefalsefalse5600000056falsefalsefalsefalsefalse3fals efalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of foreign investments included in plan assets.No authoritative reference available.falsefalseForeign investments203false0nee_ShortTermCommingle dVehiclesIncludedInPlanAssetsneefalsedebitinstantThe amount of short-term commingled vehicles included in plan assets.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse206000000206< FootnoteIndexer />falsefalsefalsefalsefalse2truefalsefalse5300000053falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of short-term commingled vehicles included in plan assets.No authoritative reference available.falsefalseShort-term commingled vehicles211false0natruenanaNo definition available.f alsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse37falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Convertible bonds [Member] 12/31/2010 USD ($) $c00232http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseConvertibl e bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ConvertibleDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$38falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Convertible bonds [Member] 12/31/2009 USD ($) $c00125http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseConvertibl e bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ConvertibleDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Convertible bonds [Member]212true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalse< /ShowCurrencySymbol>falsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]213false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse310000000310< NonNumbericText />[3]falsefalsefalsefalsefalse2truefalsefalse293000000293[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value221false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse39falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Convertible bonds [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00221http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseConvertibl e bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ConvertibleDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000S tandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$40falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Convertible bonds [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00113http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseConvertibl e bonds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_ConvertibleDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000S tandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Convertible bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]222true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]223false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse310000000310[3]falsefalsefalsefalsefalse2truefalsefalse293000000293[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value231false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse41falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] 12/31/2010 USD ($) $c00214http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseQuoted Pri ces in Active Markets for Identical Assets or Liabilities (Level 1) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$42falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] 12/31/2009 USD ($) $c00106http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseQuoted Pri ces in Active Markets for Identical Assets or Liabilities (Level 1) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]232true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]233false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse860000000860[3]falsefalsefalsefalsefalse2truefalsefalse501000000501[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan ) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value241false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse43falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00222http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseSignifican t Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$44falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00114http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseSignifican t Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Significant Other Observable Inputs (Level 2) [Member]242true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalse< /IsEPS>Fair value measurements of plan assets [Abstract]243false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse23620000002362[3]falsefalsefalsefalsefalse2truefalsefalse25270000002527[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has lia bilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value251false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse45falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Unobservable Inputs (Level 3) [Member] 12/31/2010 USD ($) $c00225http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseSignifican t Unobservable Inputs (Level 3) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$46falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Pension Benefits [Member] {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Unobservable Inputs (Level 3) [Member] 12/31/2009 USD ($) $c00118http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalsePension Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_PensionPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseSignifican t Unobservable Inputs (Level 3) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalsePension Benefits [Member] | Significant Unobservable Inputs (Level 3) [Member]252true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]253false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1100000011[3]falsefalsefalsefalsefalse2truefalsefalse00[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for bene fits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value261false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse47falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Other Benefits [Member] 1/1/2010 - 12/31/2010 USD ($) $c00339http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseOther Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberu001Standardhttp://www.xbrl.org/2003/instancepurexbrli0u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$48falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Other Benefits [Member] 1/1/2009 - 12/31/2009 USD ($) $c00033http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseOther Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$49falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Other Benefits [Member] 1/1/2008 - 12/31/2008 USD ($) $c00009http://www.sec.gov/CIK0000753308duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseOther Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseOther Benefits [Membe r]262true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]263false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition availa ble.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse3200000032falsefalsefalsefalsefalse2truefalsefalse3200000032falsefalsefalsefalsefalse3truefalsefalse2900000029falsefalsefalsefalsefals eMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value264false0us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYearus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse2800000028falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contrib utions, and (3) noncash contributions.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph g falsefalseAnticipated payment for eligible retiree medical expenses on behalf of the other benefits plan during 2011265true0us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseExpected benefit payments, net of government drug subsidy [Abstract]266false0us-gaap_DefinedBenefitPlanE xpectedFutureBenefitPaymentsInYearOneus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse3400000034falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 1.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse2011267false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearTwous-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefal sefalse3500000035falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3false falsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 2.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse2012268false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearThreeus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truef alsefalse3400000034falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 3.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse2013269false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearFourus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefa lsefalse3200000032falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 4.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse2014270false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearFiveus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefa lsefalse3200000032falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the benefits expected to be paid in Year 5.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse2015271false0us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsInFiveFiscalYearsThereafterus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1true< IsRatio>falsefalse153000000153falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph f falsefalse2016 - 2020272true0us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNet periodic benefit (income) cost [Abstract]273false0us-gaap_DefinedBenefitPlanServiceCostus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse60000006falsefalsefalsefalsefalse2truefalsefalse50000005falsefalsefalsefalsefalse3truefalsefalse50000005falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h falsefalseService cost274false0us-gaap_DefinedBenefitPlanInterestCostus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse2300000023falsefalsefalsefalsefalse2truefalsefalse2400000024falsefalsefalsefalsefalse3truefalsefalse2500000025falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h falsefalseInterest cost275false0us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssetsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-2000000-2falsefalsefalsefalsefalse2truefalsefalse-3000000-3falsefalsefalsefalsefalse3truef alsefalse-3000000-3falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAn amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.Reference 1: http://www.xbrl.org/2003/role/present ationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseExpected return on plan assets276false0us-gaap_DefinedBenefitPlanAmortizationOfTransitionObligationsAssetsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse30000003falsefalsefalsefalsefalse2truefalsefalse40000004falsefalsefalsefalsefalse3truefalsefalse40000004falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the transition obligation or asset recognized in net periodic benefit cost.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseAmortization of transition obligation277false0us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCreditus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3tru efalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseAmortization of prior service benefit278false0us-gaap_DefinedBenefitPlanAmortizationOfGainsLossesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of gains or losses recognized in net periodic benefit costReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseAmortization of gains279false0us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3true falsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of net (gain) loss recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum ca sh payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts to cover vested benefits.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 88 -Paragraph 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h falsefalseSERP settlements280false0us-gaap_DefinedBenefitPlanSpecialTerminationBenefitsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3truefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of increase related to special termination benefits offered to and accepted by employees in connection with their termination of employment that are only offered for a short period of time. A situation involving termination benefits may also involve a curtailment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 88 -Paragraph 15 falsefalseSpecial termination benefits281false0us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse3000000030falsefalsefalsefalsefalse2truefalsefalse3000000030falsefalsefalsefalsefalse3truefalsefalse3100000031falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h truefalseNet periodic benefit (income) cost282true0us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3f alsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseComponents of net periodic benefit income (cost) recognized in OCI [Abstract]283false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditAr isingDuringPeriodNetOfTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cost of benefit improvement resulting from a plan amendment that occurred during the period, after tax. The cost has not been recognized in net periodic benefit cost pursuant to FAS 87 and 106. A plan amendment includes provisions that grant increased benefits based on services rendered in prior periods.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 52 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 25 falsefalsePrior service cost284false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel 1truefalsefalse20000002falsefalsefalsefalsefalse2truefalsefalse-10000000-10falsefalsefalsefalsefalse< Cell>3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe accumulated change in the value of either the projected benefit obligation or the plans assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost pursuant to FAS 87 and 106, after tax.Refe rence 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 falsefalseNet gains (losses) (net of none, $24 tax expense, $1 tax expense and $7 tax benefit, respectively)285false0nee_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeTransitionObligationNetOfTaxneefalsedebitdurationThe amount of transition obligation recognized in other comprehensive income during the period related to retirement benefit...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-1000000-1false< ShowCurrencySymbol>falsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of transition obligation recognized in other comprehensive income during the period related to retirement benefit plans. The amount shown is net of tax.No authoritative reference available.falsefalseTransition obligation286false0us-gaap_OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsef alseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe adjustment out of other comprehensive income for prior service costs recognized as a component of net period benefit cost during the period, after tax.Reference 1: http://www.xbrl.org/2003/role/presen tationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 52 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 falsefalseAmortization of prior service benefit287false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefal se3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe adjustment out of other comprehensive income for actuarial gains (losses) recognized as a component of net periodic benefit cost during the period, after taxReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d falsefalseAmortization of net gains (net of $3 tax benefit)288false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse10000001falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe adjustment out of other comprehensive income for the net transition asset or obligation recognized as a component of net periodic benefit cost during the period, after tax.Reference 1: http://www.xbrl.org/2003/role/presentation Ref -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d falsefalseAmortization of transition obligation289false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse20000002falsefalsefalsefalsefalse2truefalsefalse-10000000-10falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNet changes to accumulated comprehensive income during the period related to benefit plans, after tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 22, 26 truefalseTotal290true0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseTax effects on components of net periodic benefit income (cost) recognized in OCI [Abstract]291false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse10000001falsefalsefalsefalsefalse2truefalsefalse-7000000-7falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect on the accumulated change in the value of either the projected benefit obligation or the plans assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost pursuant to FAS 87 and 106.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 falsefalseTax expense (benefit) related to net gains (losses)293true0us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseWeighted-average assumptions used to determine net periodic benefit (income) cost [Abstract]294false0us-gaap_DefinedBenefitP lanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.0550.055falsefalsefalsefalsefalse2truetruefalse0.0690.069falsefalsefalsefalsefalse3truetruefalse0.06350.0635falsefalsefalsefalsefalseOtherus-types:percentItemTypepureThe interest rate used to adjust for the time value of money.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j falsefalseDiscount rate (in hundredths)295false0us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.040.04falsefalsefalsefalsefalse2truetruefalse0.040.04falsefalsefalsefalsefalse 3truetruefalse0.040.04falsefalsefalsefalsefalseOtherus-types:percentItemTypepureExpected rate of compensation increases (for pay-related plans).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j falsefalseSalary increase (in hundredths)296false0us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssetsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truetruefalse0.080.08[2]falsefalsefalsefalsefalse2truetruefalse0.080.08[2]falsefalsefalsefalsefalse3truetruefalse0.080.08[2]falsefalsefalsefalsefalseOtherus-types:percentItemTypepureAn assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.Reference 1: http://www.xbrl .org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j falsefalseExpected long-term rate of return (in hundredths)297false0us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponentsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse10000001falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. (For purposes of this disclosure, all other assumptions shall be held constant, and the effects shall be measure d based on the substantive plan that is the basis for the accounting.)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph m falsefalseEffect of one-percentage point increase in assumed health care cost trend rates on total service and interest cost components298false0us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponentsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefal selabel1truefalsefalse10000001falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe effect of a one-percentage- point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. (For purposes of this disclosure, a ll other assumptions shall be held constant, and the effects shall be measured based on the substantive plan that is the basis for the accounting.)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph m falsefalseEffect of one-percentage point decrease in assumed health care cost trend rates on total service and interest cost components300false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosu resdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse50falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Other Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00223http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseOther Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity commingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_EquityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu00 0Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$51falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Other Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Equity Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00115http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalseOther Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseEquity commingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_EquityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu00 0Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseOther Benefits [Member] | Equity commingled vehicles [Member] | Significant Other Observable Inputs (Level 2) [Member]301true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]302false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo d efinition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse2000000020[3]falsefalsefalsefalsefalse2truefalsefalse1900000019[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value303false0nee_ForeignInvestmentsIncludedInPlanAssetsneefalsedebitinstantThe amount of foreign investments included in plan assets.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse50000005falsefalsefalsefalsefalse2truefalsefalse40000004falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of foreign investments included in plan assets.No authoritative reference available.falsefalseForeign investments311false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse52falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Other Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Debt Security Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2010 USD ($) $c00224http://www.sec.gov/CIK0000753308instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseOther Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseDebt security commingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_DebtSecurityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$53falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Other Benefits [Member] {us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis} : Debt Security Commingled Vehicles Member {us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxis} : Significant Other Observable Inputs (Level 2) [Member] 12/31/2009 USD ($) $c00116http://www.sec.gov/CIK0000753308instant2009-12-31T00:00:000001-01-01T00:00:00falsefalseOther Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberfalsefalseDebt security commingled vehicles [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldinee_DebtSecurityCommingledVehiclesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseSignificant Other Observable Inputs (Level 2) [Member]us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel2Memberus-gaap_DefinedBenefitPlanFairValueOfPlanAssetsByMeasurementAxisexplicitMemberu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseOther Benefits [Member] | Debt security commingled vehicles [Member] | Significa nt Other Observable Inputs (Level 2) [Member]312true0us-gaap_DefinedBenefitPlanInformationAboutPlanAssetsAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair value measurements of plan assets [Abstract]313false0us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1200000012[3]falsefalsefalsefalsefalse2truefalsefalse1300000013[3]falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalse falsefalseMonetaryxbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those nonbenefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 falsefalseFair value321false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/employeeretirementbenefitsadditionaldisclosuresdetails1falsefalse false00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse54falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Serp And Other Benefits Member 1/1/2010 - 12/31/2010 USD ($) $c00340http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseSERP and Other Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldinee_SerpAndOtherBenefitsMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberu000Standardhttp://www. xbrl.org/2003/iso4217USDiso42170USDUSD$55falsefalseUSDtruefalse{us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis} : Serp And Other Benefits Member 1/1/2009 - 12/31/2009 USD ($) $c00034http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseSERP and Other Benefits [Member]us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisxbrldihttp://xbrl.org/2006/xbrldinee_SerpAndOtherBenefitsMemberus-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxisexplicitMemberu000Standardhttp://www. xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSERP and Other Benefits [Member]327true0nee_ComponentsOfNetPeriodicBenefitIncomeCostRecognizedInRegulatoryAssetsLiabilitiesAbstractneefalse< /IsBaseElement>nadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseComponents of net periodic benefit (income) cost recognized in regulatory assets (liabilities) [Abstract]328false0nee_DefinedBenefitPlanNetPriorServiceCostCreditRecognizedInRegulatoryAssetsLiabilitiesneefalsedebitdurationThe prior service cost component of net periodic benefit (income) cost recognized during the period in regulatory assets...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse00falsefalsefalsefalsefalse2true< IsRatio>falsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMon etaryxbrli:monetaryItemTypemonetaryThe prior service cost component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalsePrior service cost329false0nee_DefinedBenefitPlanUnrecognizedGainsLossesRecognizedInRegulatoryAssetsLiabilitiesneefalsecreditdurationThe net gains (losses) component of net periodic benefit (income) cost recognized during the period in regulatory assets...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-9000000-9falsefalsefalsefalsefalse2truefalsefals e5100000051falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:mon etaryItemTypemonetaryThe net gains (losses) component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseUnrecognized (gains) losses330false0nee_DefinedBenefitPlanTransitionObligationRecognizedInRegulatoryAssetsLiabilitiesneefalsedebitdurationThe transition obligation component of net periodic benefit (income) cost recognized during the period in regulatory assets...falsefalsefalse falsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse-2 000000-2falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe transition obligation component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseTransition obligation331false0nee_DefinedBenefitPlanAmortizationOfPriorServiceBenefitRecognizedInRegulatoryAssetsLiabilitiesneefalsecreditdurationThe amortization of prior service cost component of net periodic benefit (income) cost recognized during the period in...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amortization of prior service cost component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseAmortization of prior service benefit332false0nee_DefinedBenefitPlanAmortizationOfNetGainsRecognizedInRegulatoryAssetsLiabilitiesneefalsecreditdurationThe amortization of net gains (losses) component of net periodic benefit (income) cost recognized during the period in...falsefalsefalsefalsefalse falsefalsefalsefalsefalseverboselabel1truefalsefalse00falsefalsefalsefalsefalse2truefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amort ization of net gains (losses) component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseAmortization of net gains333false0nee_DefinedBenefitPlanAmortizationOfTransitionObligationRecognizedInRegulatoryAssetsLiabilitiesneefalsecreditdurationThe amortization of transition obligation component of net periodic benefit (income) cost recognized during the period in...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-2000000-2falsefalsefalsefalsefalse2truefalsefalse-3000000-3falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amortiza tion of transition obligation component of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.falsefalseAmortization of transition obligation334false0nee_DefinedBenefitPlanComponentsOfNetPeriodicBenefitIncomeCostRecognizedInRegulatoryAssetsLiabilitiesneefalsecreditdurationTotal components of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-11000000-11falsetruefalsefalsefalse2truefalsefalse4600000046falsetruefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryT otal components of net periodic benefit (income) cost recognized during the period in regulatory assets (liabilities).No authoritative reference available.truefalseTotal1Reflects an enhanced early retirement program offered during 2010.2In developing the expected long-term rate of return on assets assumption for its plans, NextEra Energy evaluated input from its actuaries as well as information available in the marketplace. NextEra Energy considered the 10-year and 20-year historical median returns for a portfolio with an equity/bond asset mix similar to its funds. NextEra Energy also considered its funds' historical compounded returns. No specific adjustments were made to reflect expectations of future returns.3See Note 4 for discus sion of NextEra Energy's fair value measurement techniques.4Includes foreign investments of $293 million.5Includes foreign investments of $219 million.6Includes foreign investments of $499 million.7Includes foreign investments of $47 million.8Includes foreign investments of $45 million.9Includes foreign investments of $56 million and $206 million of short-term commingled vehicles.10Includes foreign investments of $56 million and $53 million of short-term commingled vehicles.3165Employee Retirement Benefits - Additional Disclosures (Details) (USD $)MillionsUnKnownUnKnownUnKnowntruetrue