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2.2.0.25truefalse009030 - Disclosure - Derivative Instruments (Details)truefalsefalse1falsefalseUSDfalsefalse1/1/2010 - 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$2true0us-gaap_SummaryOfDerivativeInstrumentsByRiskExposureAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseSummary of derivative instruments by risk exposure, maximum matu rity [Abstract]3false0nee_MaximumLengthOfTimeHedgedInCommodityCashFlowHedgeneefalsenadurationMaximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00December 2012falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherus-types:dateStringItemTypenormalizedstringMaximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted commodity transactionsNo authoritative reference available.falsefalseMaximum length of time hedged in commodity cash flow hedges4false0us-gaap_MaximumLengthOfTimeHedgedInInterestRateCashFlowHedgeus-gaaptruenadurationNo definition available.falsefalsefalse< IsCalendarTitle>falsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00September 2028falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherus-types:durationStringItemTypenormalizedstringMaximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(3) falsefalseMaximum length of time hedged in interest rate cash flow hedges5false0us-gaap_MaximumLengthOfTimeHedgedInForeignCurrencyCashFlowHedgeus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00September 2030falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringMaximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(3) falsefalseMaximum length of time hedged in foreign currency cash flow hedges6true0nee_ScheduleOfNetDerivativeInstrumentsInStatementOfFinancialPositionFairValueAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNet fair values of mark-to-market derivative instrument assets (liabilities) [Abstract]7false0nee_CurrentAssetsDerivativesneefalsedebitinstantFair values as of the balance sheet date for all assets resulting from contracts that meet the criteria of being accounted...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse506000000506000000[1]falsetruefalsefalsefalse2truefalsefalse357000000357000000 [1]falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFair values as of the balance sheet date for all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments and which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements and net of obligations to return margin cash collateral in accordance with FASB Staff Position (FSP) FIN 39-1, "Amendment of FASB Interpretation No. 39 ."No authoritative reference available.falsefalseCurrent derivative assets8false0nee_NetNonCurrentDerivativeAssetFairValueneefalsedebitinstantFair value of non-current derivative assets, presented on a net basis after terms of master netting arrangements and margin...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse589000000589000000[2]falsefalsefalsefalsefalse2truefalsefalse329000000329000000[2]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFair value of non-current derivative assets, presented on a net basis after terms of master netting arrangements and margin cash collateral has been applied.No authoritative reference available.falsefalseNoncurrent other assets9false0nee_DerivativeLiabilitiesContractneefalsecreditinstantFair values as of t he 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falsefalsefalsefalsetruenegated1truefalsefalse-243000000-243000000[4]falsefalsefalsefalsefalse2truefalsefalse-170000000-170000000[4]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNo definition available.No authoritative reference available.falsefalseNoncurrent derivative liabilities11false0us-gaap_DerivativeAssetsLiabilitiesAtFairValueNetus-gaaptrue< BalanceType>debitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse316000000316000000falsefalsefalsefalsefalse2truefalsefalse295000000295000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10 Reference 2: 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margin cash c ollateral received from counterparties that was netted against noncurrent derivative assets.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse4300000043000000falsefalsefalsefalsefalse2truefalsefalse10000001000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of margin cash collateral received from counterparties that was netted against noncurrent derivative assets.No authoritative reference available.< IsTotalLabel>falsefalseMargin cash collateral received from counterparties - netted against noncurrent derivative assets14false0nee_MarginCashCollateralNettedAgainstNetCurrentDerivativeLiabilitiesneefalsedebitinstantThe amount of margin cash collateral provided to counterparties that was netted against current derivative 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liabilities.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse5800000058000000falsefalsefalsefalsefalse2truefalsefalse9500000095000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryMargin cash collateral received from counterparties not offset against derivative liabilities.No authoritative reference available.falsefalseMargi n cash collateral provided to counterparties that was not offset against derivative liabilities18true0nee_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair values of derivatives designated as hedging instruments [Abstract]19false0us-gaap_DerivativeAssetDesignatedAsHedgingInstrumentFairValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse142000000142000000falsefalsefalsefalsefalse2truefalsefalse217000000217000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFair value of a derivative asset (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 1 falsefalseFair values of derivative assets designated as hedging instruments20false0us-gaap_DerivativeLiabilityDesignatedAsHedgingInstrumentFairValueus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse127000000127000000falsefalsefalsefalsefalse2truefalsefalse9800000098000000falsefalsefalsefalsefal seMonetaryxbrli:monetaryItemTypemonetaryFair value of a derivative liability (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 1 falsefalseFair values of derivative liabilities designated as hedging instruments21true0nee_ScheduleOfDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsInStatementOfFinancialPositionFairValueAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsever boselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseFair values of derivatives not designated as hedging instruments [Abstract]22false0us-gaap_DerivativeAssetNotDesignatedAsHedgingInstrumentFairValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse41300000004130000000falsefalsefalsefalsefalse2truefalsefalse26620000002662000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFair value of a derivative asset that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 1 falsefalseFair values of derivative assets not designated as hedging instruments23false0us-gaap_DerivativeLiabilityNotDesignatedAsHedgingInstrumentFairValueus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse38580000003858000000falsefalsefalsefalsefalse2truefalsefalse25560000002556000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFair value of a derivative liability that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -Clause 1 falsefalseFair values of derivative liabilities not designated as hedging instruments24true0nee_ScheduleOfCashFlowDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseGains (losses) related to cash flow hedges [Abstract]25false0us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse-8000000-8000000falsefalsefalsefalsefalse2truefalsefalse228000000228000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph b -Clause 2 falsefalseGains (losses) recognized in OCI26false0us-gaap_CashFlowHedgeGainLossReclassifiedToEarningsNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1true falsefalse7300000073000000falsefalsefalsefalsefalse2truefalsefalse129000000129000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of net gains (losses) on a cash flow hedge reclassified in the period to earnings from accumulated other comprehensive income.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(1) falsefalseGains (losses) reclassified from AOCI to net income27false0us-gaap_GainLossOnCashFlowHedgeIneffectivenessNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1tr uefalsefalse10000001000000[5]falsefalsefalsefalsefalse2truefalsefalse2900000029000000[5]falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net gain or loss recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(1) falsefalseGains (losses) recognized in income28true0nee_ScheduleOfDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossInStatementOfFinancialPerformanceAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseGains (losses) related to derivatives not designated as hedging instruments [Abstract]29false0us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse550000000550000000falsefalsefalsefalsefalse2truefalsefalse304000000304000000< FootnoteIndexer />falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNet gain (loss) included in earnings for the period from the net change in fair value of derivative instrument not designated as hedging instrument.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(1)(b) falsefalseGains (losses) related to derivatives not designated as hedging instruments30false0nee_GainLossesOnCommodityContractsNotDesignatedAsHedgesRecordedAsRegulatoryAssetsLiabilitiesneefalsecreditdurationPursuant to regulatory accounting treatment, net gain (loss) recorded by FPL that is included in regulatory assets and or...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-665000000-665000000falsefalsefalsefalsefalse2truefalsefalse-688000000-688000000false falsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryPursuant to regulatory accounting treatment, net gain (loss) recorded by FPL that is included in regulatory assets and or liabilities for the period from the net change in fair value of derivative instrument not designated as hedging instrument.No authoritative reference available.falsefalseGains (losses) on commodity contracts, recorded as regulatory assets and or liabilities on the balance sheet due to regulatory treatment31false0us-gaap_GainLossOnFairValu eHedgeIneffectivenessNetus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse1100000011000000falsefalsefalsefalsefalse2truefalsefalse-6000000-6000000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNet gain (loss) recognized in earnings during the reporting period representing the amount of t he fair value of the hedges' ineffectiveness.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph a(1) falsefalseGain (loss) on fair value hedge reflected in interest expense32true0nee_ScheduleOfNetNotionalVolumeOfCommodityDerivativeInstrumentsAbstractneefalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseSchedule of net notional volume of commodity derivative 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Notional amount refers to the monetary amount specified in the interest rate derivative contract.No authoritative reference available.falsefalseNet notional amount of interest rate swaps35false0us-gaap_NumberOfForeignCurrencyDerivativesHeldus-gaaptruenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse33falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerNumber of foreign currency exchange rate derivatives held by the entity at the reporting date.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44 falsefalseNumber of foreign currency swaps36false0us-gaap_NotionalAmountOfForeignCurrencyCashFlowHedgeDerivativesus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse408000000408000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate notional amount of all foreign currency derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.No authoritative reference available.falsefalseNet notional amount of foreign currency swaps37true0us-gaap_DerivativeCreditRiskRelatedContingentFeaturesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalse false00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseDerivative, credit risk related contingent features [Abstract]38false0us-gaap_DerivativeNetLiabilityPositionAggregateFairValueus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse16000000001600000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are de signated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain or loss on that instrument.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44D -Subparagraph b falsefalseFair value of derivative instruments with credit-risk-related contingent features that were in a liability position39false0nee_AdditionalCollateralAggregateFairValueDueToCreditRatingDowngradeToBbbOrBaa2neefalsenainstantThe aggregate fair value of collateral that would be required to be posted for derivative instruments with...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse400000000400000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe aggregate fair value of collateral that would be required to be posted for derivative instruments with credit-risk-related contingent features if the applicable corporate credit ratings were downgraded to BBB/Baa2 at the end of the reporting period.No authoritative reference available.falsefalseTotal required posted collateral should Capital Holdings' and FPL's credit ratings fall to BBB/Baa240false0nee_AdditionalCollateralAggregateFairValueDueToCreditRatingDowngrad eToBelowInvestmentGradeneefalsenainstantThe aggregate fair value of collateral that would be required to be posted for derivative instruments with...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse21000000002100000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe aggregate fair va lue of collateral that would be required to be posted for derivative instruments with credit-risk-related contingent features if the applicable corporate credit ratings were downgraded to below investment grade at the end of the reporting period.No authoritative reference available.falsefalseTotal required posted collateral should Capital Holdings' and FPL's credit ratings fall to below investment grade41false0nee_AdditionalCollateralAggregateFairValueDueToOtherFinancialMeasuresneefalsenainstantThe aggregate fair value of additional collateral that would be required to be posted for derivative instruments with...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse600000000600000000falsefalsefalsefalsefalse2fa lsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe aggregate fair value of additional collateral that would be required to be posted for derivative instruments with credit-risk-related contingent features if certain cross-default provisions or certain financial measurement requirements were triggered at the end of the reporting period.No authoritative reference availabl e.falsefalseAdditional collateral requirements if non-ratings based contract provisions are triggered42false0nee_LettersOfCreditAlreadyPostedAggregateFairValueneefalsedebitinstantLetters of Credit that are already posted in the normal course of business, at the end of the reporting period, that could be...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse115000000115000000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryLetters of Credit that are already posted in the normal course of business, at the end of the reporting period, that could be applied toward the collateral requirements for derivative instruments with credit-risk-related contingent features.No authoritative reference available.falsefalseLetters of credit posted through the normal course of business that could be applied toward the collateral requirements related to derivative instruments with credit-risk-related contingent features43false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://nexteraenergyresources.com/role/derivativeinstrumentsdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalseUSDtruefalse{us-gaap_DerivativeInstrumentsG ainLossByDerivativeInstrumentRiskAxis} : Commodity contracts [Member] 1/1/2010 - 12/31/2010 USD ($) $c00360http://www.sec.gov/CIK0000753308duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseCommodity contracts [Member]us-gaap_DerivativeInstrumentsGainLossByDerivativeInstrumentRiskAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommodityContractMemberus-gaap_DerivativeInstrumentsGainLossByDerivativeInstrumentRiskAxisexplicitMemberu000Standardht tp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4falsefalseUSDtruefalse{us-gaap_DerivativeInstrumentsGainLossByDerivativeInstrumentRiskAxis} : Commodity contracts [Member] 1/1/2009 - 12/31/2009 USD ($) $c00041http://www.sec.gov/CIK0000753308duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseCommodity contracts [Member]us-gaap_DerivativeInstrumentsGainLossByDerivativeInstrumentRiskAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommodityContractMemberus-gaap_DerivativeInstrumentsGainLossByDerivativeInstrumentRiskAxisexplicitMemberu000Standardht tp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseCommodity contracts [Member]48true0nee_ScheduleOfCashFlowDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceAbstractneefalse nadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseGains (losses) related to cash flow hedges 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For example the number of barrels specified in a fuel oil forward purchase contract.No authoritative reference availa ble.falsefalseNon monetary net notional volumes1At December 31, 2010 and 2009, NextEra Energy's balances reflect the netting of approximately $23 million and $4 million (none at FPL), respectively, in margin cash collateral received from counterparties.2At December 31, 2010 and 2009, NextEra Energy's balances reflect the netting of approximately $43 million and $1 million (none at FPL), respectively, in margin cash collateral received from counterparties.3At December 31, 2010 and 2009, NextEra Energy's balances reflect the netting of approximately $23 million and $75 million (none at FPL), respectively, in margin cash collateral provided to counterparties.4At December 31, 2010, NextEra Energy's balance reflects the netting o f approximately $72 million (none at FPL) in margin cash collateral provided to counterparties.5Represents the ineffective portion of the hedging instrument.6Included in operating revenues.7In addition, for the year ended December 31, 2010 and 2009, FPL recorded approximately $665 million and $688 million of losses, respectively, related to commodity contracts as regulatory assets on its consolidated balance sheets.8Included in interest expense.9Loss of approximately $4 million is included in interest expense and the balance is included in other - net.10Loss of approximately $1 million is included in interest expense and the balance is included in other - net.11Megawatt-hours12One million British thermal units2137Derivative Instruments (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruetrue