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2.2.0.7 true Commitments and Contingencies (Detail) (USD $) 009100 - Disclosure - Commitments and Contingencies (Detail) true false false false 1 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u003 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 2 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u003 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 3 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u003 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 4 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u003 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ 2 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 3 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 true true false false 2005000000 2005000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. No authoritative reference available. false 4 2011 2 nee_PlannedCapitalExpendituresNextYear nee false debit duration Estimated planned capital expenditures for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 4020000000 4020000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the next year. No authoritative reference available. false 5 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 4070000000 4070000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 6 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 2445000000 2445000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. No authoritative reference available. false 7 2014 2 nee_PlannedCapitalExpendituresFifthYear nee false debit duration Estimated planned capital expenditures for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1765000000 1765000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fifth year. No authoritative reference available. false 8 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 14305000000 14305000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 9 Allowance for funds used during construction (AFUDC) 2 nee_PlannedGenerationCapitalExpendituresAfudcCurrentYear nee false debit duration Estimated AFUDC related to Generation for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 28000000 28000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated AFUDC related to Generation for the remainder of the current year. No authoritative reference available. false 10 Allowance for funds used during construction (AFUDC) 2 nee_PlannedGenerationCapitalExpendituresAfudcNextYear nee false debit duration Estimated AFUDC related to Generation for the remainder of the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 47000000 47000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated AFUDC related to Generation for the remainder of the next year. No authoritative reference available. false 11 Allowance for funds used during construction (AFUDC) 2 nee_PlannedGenerationCapitalExpendituresAfudcThirdYear nee false debit duration Estimated AFUDC related to Generation for the remainder of the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 80000000 80000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated AFUDC related to Generation for the remainder of the third year. No authoritative reference available. false 12 Allowance for funds used during construction (AFUDC) 2 nee_PlannedGenerationCapitalExpendituresAfudcFourthYear nee false debit duration Estimated AFUDC related to Generation for the remainder of the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 86000000 86000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated AFUDC related to Generation for the remainder of the fourth year. No authoritative reference available. false 13 Allowance for funds used during construction (AFUDC) 2 nee_PlannedGenerationCapitalExpendituresAfudcFifthYear nee false debit duration Estimated AFUDC related to Generation for the remainder of the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 31000000 31000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated AFUDC related to Generation for the remainder of the fifth year. No authoritative reference available. false 14 Pre-construction costs and carrying charges (equal to a pretax AFUDC rate) 2 nee_PlannedNewGenerationCapitalExpendituresPreConstructionCostsAndCarryingChargesCurrentYear nee false debit duration Estimated pre-construction costs and carrying charges (equal to a pretax AFUDC rate) on new generation construction costs... false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 50000000 50000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated pre-construction costs and carrying charges (equal to a pretax AFUDC rate) on new generation construction costs recoverable through the capacity clause, for the remainder of the current year. No authoritative reference available. false 15 Pre-construction costs and carrying charges (equal to a pretax AFUDC rate) 2 nee_PlannedNewGenerationCapitalExpendituresPreConstructionCostsAndCarryingChargesNextYear nee false debit duration Estimated pre-construction costs and carrying charges (equal to a pretax AFUDC rate) on new generation construction costs... false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 79000000 79000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated pre-construction costs and carrying charges (equal to a pretax AFUDC rate) on new generation construction costs recoverable through the capacity clause, for the next year. No authoritative reference available. false 16 Pre-construction costs and carrying charges (equal to a pretax AFUDC rate) 2 nee_PlannedNewGenerationCapitalExpendituresPreConstructionCostsAndCarryingChargesThirdYear nee false debit duration Estimated pre-construction costs and carrying charges (equal to a pretax AFUDC rate) on new generation construction costs... false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 67000000 67000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated pre-construction costs and carrying charges (equal to a pretax AFUDC rate) on new generation construction costs recoverable through the capacity clause, for the third year. No authoritative reference available. false 17 Pre-construction costs and carrying charges (equal to a pretax AFUDC rate) 2 nee_PlannedNewGenerationCapitalExpendituresPreConstructionCostsAndCarryingChargesFourthYear nee false debit duration Estimated pre-construction costs and carrying charges (equal to a pretax AFUDC rate) on new generation construction costs... false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 24000000 24000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated pre-construction costs and carrying charges (equal to a pretax AFUDC rate) on new generation construction costs recoverable through the capacity clause, for the fourth year. No authoritative reference available. false 18 Planned new wind generation mw over next 5 years 2 nee_PlannedAdditionalNewWindGenerationMwOverNextFiveYears nee false na duration Planned additional new wind generation megawatts over next five years. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 3,500 mw to 5,000 mw false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Planned additional new wind generation megawatts over next five years. No authoritative reference available. false 19 Planned new wind generation mw over next year 2 nee_PlannedAdditionalNewWindGenerationMwOverCurrentYear nee false na duration Planned additional new wind generation megawatts in current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 600 mw to 850 mw false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Planned additional new wind generation megawatts in current year. No authoritative reference available. false 20 Planned new wind generation costs over next year low range 2 nee_PlannedAdditionalNewWindGenerationCapitalExpendituresOverCurrentYearLowRange nee false debit duration Low range of planned additional new wind generation capital expenditures in current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 7000000000 7000000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Low range of planned additional new wind generation capital expenditures in current year. No authoritative reference available. false 21 Planned new wind generation costs over next year high range 2 nee_PlannedAdditionalNewWindGenerationCapitalExpendituresOverCurrentYearHighRange nee false debit duration High range of planned additional new wind generation capital expenditures in current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 10000000000 10000000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary High range of planned additional new wind generation capital expenditures in current year. No authoritative reference available. false 22 Planned Additional Solar Generation MW Over Next Five Years 2 nee_PlannedAdditionalSolarGenerationMwOverNextFiveYears nee false na duration Planned additional new solar generation megawatts over next five years. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 400 mw to 600 mw false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Planned additional new solar generation megawatts over next five years. No authoritative reference available. false 23 Planned new solar generation costs over next five years low range 2 nee_PlannedAdditionalNewSolarGenerationCapitalExpendituresOverNextFiveYearsLowRange nee false debit duration Low range of planned additional new solar generation capital expenditures over next five years. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 3000000000 3000000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Low range of planned additional new solar generation capital expenditures over next five years. No authoritative reference available. false 24 Planned new solar generation costs over next five years high range 2 nee_PlannedAdditionalNewSolarGenerationCapitalExpendituresOverNextFiveYearsHighRange nee false na duration High range of planned additional new solar generation capital expenditures over next five years. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 4000000000 4000000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary High range of planned additional new solar generation capital expenditures over next five years. No authoritative reference available. false 25 Planned gas infrastructure project costs over next five years low range 2 nee_PlannedAdditionalGasInfrastructureCapitalExpendituresOverNextFiveYearsLowRange nee false na duration Low range of planned additional gas infrastructure capital expenditures over next five years. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 400000000 400000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Low range of planned additional gas infrastructure capital expenditures over next five years. No authoritative reference available. false 26 Planned gas infrastructure project costs over next five years high range 2 nee_PlannedAdditionalGasInfrastructureCapitalExpendituresOverNextFiveYearsHighRange nee false na duration High range of planned additional gas infrastructure capital expenditures over next five years. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 600000000 600000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary High range of planned additional gas infrastructure capital expenditures over next five years. No authoritative reference available. false 27 Planned transmission line in Texas costs over next five years 2 nee_PlannedAdditionalTransmissionLineInTexasCapitalExpendituresWithinNextFiveYears nee false na duration Planned transmission line in Texas capital expenditures within next five years. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 800000000 800000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Planned transmission line in Texas capital expenditures within next five years. No authoritative reference available. false 28 Terms of guarantees related to non-consolidated entities in years 2 us-gaap_GuaranteeObligationsTerm us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 one year to seven years false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Describe the approximate term of the guarantee or each group of similar guarantees. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph a false 29 Amount of guarantees related to non-consolidated entities 2 us-gaap_GuaranteeObligationsMaximumExposure us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 54000000 54000000 false false false 2 false false false false 0 0 false false false 3 false true false false 54000000 54000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph b false 42 Long Term Purchase Commitment [Abstract] 2 nee_LongTermPurchaseCommitmentAbstract nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 43 Capactiy Payments 2 nee_TotalCapacityPaymentsUnderContracts nee false debit duration Total capacity payments under contrats, substantially all of which are recoverable through the capacity clause. false false false false false false false false false false false terselabel false 1 false true false false 137000000 137000000 false false false 2 false true false false 154000000 154000000 false false false 3 false true false false 286000000 286000000 false false false 4 false true false false 307000000 307000000 false false false xbrli:monetaryItemType monetary Total capacity payments under contrats, substantially all of which are recoverable through the capacity clause. No authoritative reference available. false 44 Energy Payments 2 nee_TotalEnergyPaymentsUnderContracts nee false debit duration Total energy payments under contrats, which are recoverable through the fuel clause. false false false false false false false false false false false terselabel false 1 false true false false 114000000 114000000 false false false 2 false true false false 108000000 108000000 false false false 3 false true false false 213000000 213000000 false false false 4 false true false false 204000000 204000000 false false false xbrli:monetaryItemType monetary Total energy payments under contrats, which are recoverable through the fuel clause. No authoritative reference available. false 45 Term Of Agreements With Contingencies Low Range 2 nee_TermOfAgreementsWithContingenciesLowerRange nee false na duration Low range of term of agreements with contingencies. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 15 15 false false false 4 false false false false 0 0 false false false xbrli:integerItemType integer Low range of term of agreements with contingencies. No authoritative reference available. false 46 Term Of Agreements With Contingencies High Range 2 nee_TermOfAgreementsWithContingenciesHighRange nee false na duration High range of term of agreements with contingencies. false false false false false false false false false false false label false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 25 25 false false false 4 false false false false 0 0 false false false xbrli:integerItemType integer High range of term of agreements with contingencies. No authoritative reference available. false 47 Annual Firm Commitments - Agreements With Contingencies 2 nee_ApproximateAnnualFirmCommitmentsAgreementsWithContingencies nee false debit duration Approximate annual firm commitments of agreements with contingencies. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 175000000 175000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Approximate annual firm commitments of agreements with contingencies. No authoritative reference available. false 48 Over Term Of Firm Commitments - Agreements With Contingencies 2 nee_ApproximateOverTermOfFirmCommitmentsAgreementsWithContingencies nee false debit duration Approximate firm commitments over term of agreements with contingencies. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 4300000000 4300000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Approximate firm commitments over term of agreements with contingencies. No authoritative reference available. false 49 Maximum Obtainable Amount of Priviate Liability Insurance Available Under Price-Anderson Act 2 nee_AmountOfPrivateLiabilityInsurancePerNuclearPowerPlantSite nee false debit duration Maximum obtainable amount of priviate liability insurance per nuclear site available under the Price-Anderson Act. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 375000000 375000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Maximum obtainable amount of priviate liability insurance per nuclear site available under the Price-Anderson Act. No authoritative reference available. false 50 Amount of Secondary Financial Protection Liability Insurance Coverage Per Incident 2 nee_AmountOfSecondaryFinancialProtectionPerIncidentAtNuclearReactor nee false na duration Amount of secondary financial protection liability insurance coverage per incident at any nuclear reactor in the United... false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 12200000000 12200000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Amount of secondary financial protection liability insurance coverage per incident at any nuclear reactor in the United States. No authoritative reference available. false 51 Potential Amount of Retrospective Assessment Under Secondary Financial Protection System 2 nee_PotentialRetrospectiveAssessmentsUnderSecondaryFinancialProtectionSystem nee false debit duration Potential amount of retrospective assessment under secondary financial protection system, plus any applicable taxes per... false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 940000000 940000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Potential amount of retrospective assessment under secondary financial protection system, plus any applicable taxes per incident at any nuclear reactor in the United States. No authoritative reference available. false 52 Potential Amount of Retrospective Assessment Under Secondary Financial Protection System Payable Per Year 2 nee_PotentialRetrospectiveAssessmentsUnderSecondaryFinancialProtectionSystemPayablePerIncidentPerYear nee false debit duration Potential amount of retrospective assessment under secondary financial protection system, plus any applicable taxes per... false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 140000000 140000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Potential amount of retrospective assessment under secondary financial protection system, plus any applicable taxes per incident at any nuclear reactor in the United States payable per year. No authoritative reference available. false 53 Insurance [Line Items] 2 nee_InsuranceLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 55 Amount Of Limited Insurance Coverage Per Occurence Per Site Under Nuclear Insurance Mutual Companies For Property Damage Decontamination And Premature Decommissioning Risks 2 nee_AmountOfLimitedInsuranceCoveragePerOccurencePerSiteUnderNuclearInsuranceMutualCompaniesForPropertyDamageDecontaminationAndPrematureDecommissioningRisks nee false debit duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 2750000000 2750000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 56 Interest Owned In Generation Facility [Line Items] 2 nee_InterestOwnedInGenerationFacilityLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 58 Maximum Amount of Civil Pentalties Per Day - Clean Air Act from June 1, 1975 through January 30, 1997. 2 nee_MaximumDailyCleanAirActCivilPenaltiesPeriod1 nee false debit instant Maximum amount of civil pentalties per day for violation under Clean Air Act from June 1, 1975 through January 30, 1997. false false false false false false false false false false false terselabel false 1 false true false false 25000 25000 false false false 2 false false false false 0 0 false false false 3 false true false false 25000 25000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Maximum amount of civil pentalties per day for violation under Clean Air Act from June 1, 1975 through January 30, 1997. No authoritative reference available. false 59 Maximum Amount of Civil Pentalties Per Day - Clean Air Act from January 31, 1997 through March 15, 2004. 2 nee_MaximumDailyCleanAirActCivilPenaltiesPeriod3 nee false debit instant Maximum amount of civil pentalties per day for violation under Clean Air Act from March 16, 2004 through January 12, 2009. false false false false false false false false false false false terselabel false 1 false true false false 27500 27500 false false false 2 false false false false 0 0 false false false 3 false true false false 27500 27500 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Maximum amount of civil pentalties per day for violation under Clean Air Act from March 16, 2004 through January 12, 2009. No authoritative reference available. false 60 Maximum Amount of Civil Pentalties Per Day - Clean Air Act from January 13, 2009 forward. 2 nee_MaximumDailyCleanAirActCivilPenaltiesPeriod4 nee false debit instant Maximum amount of civil pentalties per day for violation under Clean Air Act from January 13, 2009 forward. false false false false false false false false false false false terselabel false 1 false true false false 37500 37500 false false false 2 false false false false 0 0 false false false 3 false true false false 37500 37500 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Maximum amount of civil pentalties per day for violation under Clean Air Act from January 13, 2009 forward. No authoritative reference available. false 61 Common Stock Shares Purchased 2 nee_CommonStockSharesPurchased nee false na duration Shares of common stock purchased. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1091524 1091524 false false false 4 false false false false 0 0 false false false xbrli:sharesItemType shares Shares of common stock purchased. No authoritative reference available. false 62 Preferred Stock Shares Purchased 2 nee_PreferredStockSharesPurchased nee false na duration Shares of preferred stock purchased. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 20000 20000 false false false 4 false false false false 0 0 false false false xbrli:sharesItemType shares Shares of preferred stock purchased. No authoritative reference available. false 63 Shares of Common Stock if Preferred Stock Converted to Common Stock. 2 nee_ConvertibleSharesPurchased nee false na duration Shares of common stock if preferred stock converted to common stock. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 2358490 2358490 false false false 4 false false false false 0 0 false false false xbrli:sharesItemType shares Shares of common stock if preferred stock converted to common stock. No authoritative reference available. false 64 Aggregate Price Paid for Common and Preferred Stock 2 nee_AggregatePriceForShares nee false na instant Aggregate price paid for common and preferred stock. false false false false false false false false false false false terselabel false 1 false true false false 35900000 35900000 false false false 2 false false false false 0 0 false false false 3 false true false false 35900000 35900000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Aggregate price paid for common and preferred stock. No authoritative reference available. false 65 Cash Paid for Repurchase of Acquired Shares 2 nee_CashPaidForRepurchaseOfAcquiredShares nee false debit instant Cash paid for repurchase of acquired shares. false false false false false false false false false false false terselabel false 1 false true false false 149213130 149213130 false false false 2 false false false false 0 0 false false false 3 false true false false 149213130 149213130 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Cash paid for repurchase of acquired shares. No authoritative reference available. false 66 Damages Asserted for Breach of Contract 2 nee_DamagesAssertedForBreachOfContract nee false debit duration Amount of damages sought by plaintiff for breach of contract. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 34000000 34000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Amount of damages sought by plaintiff for breach of contract. No authoritative reference available. false 67 Increase In Base Rate Revenues 2 nee_IncreaseInBaseRateRevenues nee false debit duration Increase in base rate revenues on an annualized basis beginning March 1, 2010. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 75000000 75000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Increase in base rate revenues on an annualized basis beginning March 1, 2010. No authoritative reference available. false 68 Regulatory Return on Common Equity 2 nee_RegulatoryReturnOnCommonEquity nee false na duration Regulatory return on common equity effective March 1, 2010. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 10.0 10.0 false false false 4 false false false false 0 0 false false false xbrli:pureItemType pure Regulatory return on common equity effective March 1, 2010. No authoritative reference available. false 69 Regulatory Return on Common Equity Range 2 nee_RegulatoryReturnOnCommonEquityBasisPoints nee false na duration Regulatory return on common equity range of plus or minus basis points. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 100 basis points false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Regulatory return on common equity range of plus or minus basis points. No authoritative reference available. false 70 Adjusted Regulatory Equity Ratio 2 nee_AdjustedRegulatoryEquityRatio nee false na duration Adjusted regulatory equity ratio effective March 1, 2010. false false false false false false false false false false false label false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 59.1 59.1 false false false 4 false false false false 0 0 false false false xbrli:pureItemType pure Adjusted regulatory equity ratio effective March 1, 2010. 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No authoritative reference available. false 72 Seabrook Station Insurance [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 5 USD true false false false Seabrook Station Insurance [Member] nee_InsuranceAxis xbrldi http://xbrl.org/2006/xbrldi nee_SeabrookStationInsuranceMember nee_InsuranceAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. 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No authoritative reference available. false 143 Duane Arnold Energy Center Insurance [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 6 USD true false false false Duane Arnold Energy Center Insurance [Member] nee_InsuranceAxis xbrldi http://xbrl.org/2006/xbrldi nee_DuaneArnoldEnergyCenterInsuranceMember nee_InsuranceAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. 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No authoritative reference available. false 214 St Lucie Unit No 2 Insurance [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 7 USD true false false false St Lucie Unit No 2 Insurance [Member] nee_InsuranceAxis xbrldi http://xbrl.org/2006/xbrldi nee_StLucieUnitNo2InsuranceMember nee_InsuranceAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. 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No authoritative reference available. false 285 Scherer Unit No 4 [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 8 true false false false Scherer Unit No 4 [Member] nee_InterestOwnedInGenerationFacilityAxis xbrldi http://xbrl.org/2006/xbrldi nee_SchererUnitNo4Member nee_InterestOwnedInGenerationFacilityAxis explicitMember u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 na No definition available. No authoritative reference available. false 340 Interest Owned In Generation Facility [Line Items] 2 nee_InterestOwnedInGenerationFacilityLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 341 Interest Owned In Generation Facility 2 nee_InterestOwnedInGenerationFacility nee false na duration Percentage of interest owned in generation facility. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 76 76 false false false 4 false false false false 0 0 false false false xbrli:pureItemType pure Percentage of interest owned in generation facility. No authoritative reference available. false 356 FPL New Generation Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 9 USD true false false false FPL New Generation Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplNewGenerationExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 357 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 358 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 550000000 550000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. 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No authoritative reference available. true 427 FPL Existing Generation Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 10 USD true false false false FPL Existing Generation Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplExistingGenerationExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 428 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 429 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 235000000 235000000 [1] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. No authoritative reference available. false 430 2011 2 nee_PlannedCapitalExpendituresNextYear nee false debit duration Estimated planned capital expenditures for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 545000000 545000000 [1] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the next year. No authoritative reference available. false 431 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 490000000 490000000 [1] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 432 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 490000000 490000000 [1] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. 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No authoritative reference available. false 434 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 2225000000 2225000000 [1] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 498 FPL Transmission And Distribution Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 11 USD true false false false FPL Transmission And Distribution Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplTransmissionAndDistributionExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 499 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 500 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 290000000 290000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. 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No authoritative reference available. false 502 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 695000000 695000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 503 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 710000000 710000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. No authoritative reference available. false 504 2014 2 nee_PlannedCapitalExpendituresFifthYear nee false debit duration Estimated planned capital expenditures for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 545000000 545000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fifth year. No authoritative reference available. false 505 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 2840000000 2840000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 569 FPL Nuclear Fuel Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 12 USD true false false false FPL Nuclear Fuel Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplNuclearFuelExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 570 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 571 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 60000000 60000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. No authoritative reference available. false 572 2011 2 nee_PlannedCapitalExpendituresNextYear nee false debit duration Estimated planned capital expenditures for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 200000000 200000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the next year. No authoritative reference available. false 573 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 175000000 175000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 574 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 250000000 250000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. 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No authoritative reference available. false 576 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 890000000 890000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 640 FPL General And Other Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 13 USD true false false false FPL General And Other Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplGeneralAndOtherExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 641 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 642 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 70000000 70000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. 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No authoritative reference available. false 644 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 120000000 120000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. 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No authoritative reference available. true 711 Next Era Energy Resources Wind Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 14 USD true false false false Next Era Energy Resources Wind Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_NextEraEnergyResourcesWindExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 712 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 713 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 355000000 355000000 [4] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. 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No authoritative reference available. false 715 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 10000000 10000000 [4] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 716 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 10000000 10000000 [4] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. No authoritative reference available. false 717 2014 2 nee_PlannedCapitalExpendituresFifthYear nee false debit duration Estimated planned capital expenditures for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 5000000 5000000 [4] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fifth year. No authoritative reference available. false 718 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 425000000 425000000 [4] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 782 Next Era Energy Resources Nuclear Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 15 USD true false false false Next Era Energy Resources Nuclear Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_NextEraEnergyResourcesNuclearExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 783 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 784 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 270000000 270000000 [5] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. No authoritative reference available. false 785 2011 2 nee_PlannedCapitalExpendituresNextYear nee false debit duration Estimated planned capital expenditures for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 445000000 445000000 [5] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the next year. No authoritative reference available. false 786 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 315000000 315000000 [5] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 787 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 255000000 255000000 [5] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. No authoritative reference available. false 788 2014 2 nee_PlannedCapitalExpendituresFifthYear nee false debit duration Estimated planned capital expenditures for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 240000000 240000000 [5] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fifth year. No authoritative reference available. false 789 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1525000000 1525000000 [5] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 853 Next Era Energy Resources Natural Gas Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 16 USD true false false false Next Era Energy Resources Natural Gas Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_NextEraEnergyResourcesNaturalGasExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 854 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 855 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 20000000 20000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. No authoritative reference available. false 856 2011 2 nee_PlannedCapitalExpendituresNextYear nee false debit duration Estimated planned capital expenditures for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 75000000 75000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the next year. No authoritative reference available. false 857 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 70000000 70000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 858 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 45000000 45000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. No authoritative reference available. false 859 2014 2 nee_PlannedCapitalExpendituresFifthYear nee false debit duration Estimated planned capital expenditures for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 20000000 20000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fifth year. No authoritative reference available. false 860 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 230000000 230000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 924 Next Era Energy Resources Solar Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 17 USD true false false false Next Era Energy Resources Solar Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_NextEraEnergyResourcesSolarExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 925 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 926 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 105000000 105000000 [6] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. No authoritative reference available. false 927 2011 2 nee_PlannedCapitalExpendituresNextYear nee false debit duration Estimated planned capital expenditures for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 530000000 530000000 [6] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the next year. No authoritative reference available. false 928 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 345000000 345000000 [6] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 929 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 80000000 80000000 [6] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. No authoritative reference available. false 930 2014 2 nee_PlannedCapitalExpendituresFifthYear nee false debit duration Estimated planned capital expenditures for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [6] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fifth year. No authoritative reference available. false 931 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1060000000 1060000000 [6] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 995 Next Era Energy Resources Other Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 18 USD true false false false Next Era Energy Resources Other Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_NextEraEnergyResourcesOtherExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 996 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 997 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 50000000 50000000 [7] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. No authoritative reference available. false 998 2011 2 nee_PlannedCapitalExpendituresNextYear nee false debit duration Estimated planned capital expenditures for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 90000000 90000000 [7] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the next year. No authoritative reference available. false 999 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 60000000 60000000 [7] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 1000 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 45000000 45000000 [7] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. No authoritative reference available. false 1001 2014 2 nee_PlannedCapitalExpendituresFifthYear nee false debit duration Estimated planned capital expenditures for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 50000000 50000000 [7] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fifth year. No authoritative reference available. false 1002 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 295000000 295000000 [7] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 1066 Corporate And Other Expenditures [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 19 USD true false false false Corporate And Other Expenditures [Member] nee_PlannedCapitalExpendituresAxis xbrldi http://xbrl.org/2006/xbrldi nee_CorporateAndOtherExpendituresMember nee_PlannedCapitalExpendituresAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 1067 Planned Capital Expenditures [Line Items] 2 nee_PlannedCapitalExpendituresLineItems nee false na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 1068 2010 2 nee_PlannedCapitalExpendituresRemainderCurrentYear nee false debit duration Estimated planned capital expenditures for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 20000000 20000000 [8] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the remainder of the current year. No authoritative reference available. false 1069 2011 2 nee_PlannedCapitalExpendituresNextYear nee false debit duration Estimated planned capital expenditures for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 55000000 55000000 [8] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the next year. No authoritative reference available. false 1070 2012 2 nee_PlannedCapitalExpendituresThirdYear nee false debit duration Estimated planned capital expenditures for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 30000000 30000000 [8] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the third year. No authoritative reference available. false 1071 2013 2 nee_PlannedCapitalExpendituresFourthYear nee false debit duration Estimated planned capital expenditures for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 30000000 30000000 [8] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fourth year. No authoritative reference available. false 1072 2014 2 nee_PlannedCapitalExpendituresFifthYear nee false debit duration Estimated planned capital expenditures for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 25000000 25000000 [8] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated planned capital expenditures for the fifth year. No authoritative reference available. false 1073 Total 2 nee_TotalPlannedCapitalExpenditures nee false debit duration Total estimated planned capital expenditures. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 160000000 160000000 [8] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Total estimated planned capital expenditures. No authoritative reference available. true 1137 JEA And Southern Subsidiaries Contract Range 1 [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 20 true false false false JEA And Southern Subsidiaries Contract Range 1 [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_JeaAndSouthernSubsidiariesContractRange1Member us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember na No definition available. No authoritative reference available. false 1166 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1167 MW under JEA and Southern Contracts 2 nee_LongTermPurchaseCommitmentMinimumAnnualQuantityRequired nee false na duration Sets forth the number of megawatts that must be purchased annually within the specified time period of the agreement to avoid... false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 1,330 mw false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Sets forth the number of megawatts that must be purchased annually within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse No authoritative reference available. false 1168 Time period under JEA and Southern Contracts 2 us-gaap_LongTermPurchaseCommitmentTimePeriod us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 mid-2010 through 2015 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Specifies the time period covered by the arrangement. No authoritative reference available. false 1208 JEA And Southern Subsidiaries Contract Range 2 [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 21 true false false false JEA And Southern Subsidiaries Contract Range 2 [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_JeaAndSouthernSubsidiariesContractRange2Member us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember na No definition available. No authoritative reference available. false 1237 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1238 MW under JEA and Southern Contracts 2 nee_LongTermPurchaseCommitmentMinimumAnnualQuantityRequired nee false na duration Sets forth the number of megawatts that must be purchased annually within the specified time period of the agreement to avoid... false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 375 mw false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Sets forth the number of megawatts that must be purchased annually within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse No authoritative reference available. false 1239 Time period under JEA and Southern Contracts 2 us-gaap_LongTermPurchaseCommitmentTimePeriod us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 through 2021 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Specifies the time period covered by the arrangement. No authoritative reference available. false 1279 Qualifiying Facilities Contracts [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 22 true false false false Qualifiying Facilities Contracts [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_QualifiyingFacilitiesContractsMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 na No definition available. No authoritative reference available. false 1308 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1311 Minimum MW Purchase Commitments 2 us-gaap_LongTermPurchaseCommitmentMinimumQuantityRequired us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 695 695 false false false 4 false false false false 0 0 false false false xbrli:integerItemType integer Sets forth the number of units of goods that must be purchased within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences. No authoritative reference available. false 1312 Expiration Dates Purchase Commitments 2 nee_LongTermPurchaseCommitmentExpirationDate nee false na duration Specifies the expiration date covered by the arrangement. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 December 2010 through 2032 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Specifies the expiration date covered by the arrangement. No authoritative reference available. false 1350 Other Electricity Suppliers Contract [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 23 true false false false Other Electricity Suppliers Contract [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_OtherElectricitySuppliersContractMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u001 Standard http://www.xbrl.org/2003/instance pure xbrli 0 na No definition available. No authoritative reference available. false 1379 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1382 Minimum MW Purchase Commitments 2 us-gaap_LongTermPurchaseCommitmentMinimumQuantityRequired us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 155 155 false false false 4 false false false false 0 0 false false false xbrli:integerItemType integer Sets forth the number of units of goods that must be purchased within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences. No authoritative reference available. false 1383 Expiration Dates Purchase Commitments 2 nee_LongTermPurchaseCommitmentExpirationDate nee false na duration Specifies the expiration date covered by the arrangement. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 2012 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Specifies the expiration date covered by the arrangement. No authoritative reference available. false 1421 Natural Gas Including Transportation And Storage [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 24 true false false false Natural Gas Including Transportation And Storage [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_NaturalGasIncludingTransportationAndStorageMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember na No definition available. No authoritative reference available. false 1450 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1454 Expiration Dates Purchase Commitments 2 nee_LongTermPurchaseCommitmentExpirationDate nee false na duration Specifies the expiration date covered by the arrangement. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 through 2032 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Specifies the expiration date covered by the arrangement. No authoritative reference available. false 1492 Next Era Energy Resources Contract Group 1 [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 25 USD true false false false Next Era Energy Resources Contract Group 1 [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_NextEraEnergyResourcesContractGroup1Member us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 1521 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1525 Expiration Dates Purchase Commitments 2 nee_LongTermPurchaseCommitmentExpirationDate nee false na duration Specifies the expiration date covered by the arrangement. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 October 2010 through 2022 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Specifies the expiration date covered by the arrangement. No authoritative reference available. false 1526 NextEra Energy Resources Commitment Amount Included in Capital Expenditures 2 nee_CommitmentsIncludedInPlannedCapitalExpenditures nee false debit duration Commitments included in planned capital expenditures false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1100000000 1100000000 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Commitments included in planned capital expenditures No authoritative reference available. false 1563 Next Era Energy Resources Contract Group 2 [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 26 true false false false Next Era Energy Resources Contract Group 2 [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_NextEraEnergyResourcesContractGroup2Member us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember na No definition available. No authoritative reference available. false 1592 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1596 Expiration Dates Purchase Commitments 2 nee_LongTermPurchaseCommitmentExpirationDate nee false na duration Specifies the expiration date covered by the arrangement. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 October 2010 through 2033 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Specifies the expiration date covered by the arrangement. No authoritative reference available. false 1634 FPL JEA And Southern Subsidiaries Capacity Payments [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 27 USD true false false false FPL JEA And Southern Subsidiaries Capacity Payments [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplJeaAndSouthernSubsidiariesCapacityPaymentsMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 1663 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1669 2010 2 nee_RequiredCapacityAndOrMinimumPaymentsRemainderCurrentYear nee false debit duration Estimated required capacity and/or minimum payments for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 100000000 100000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the remainder of the current year. No authoritative reference available. false 1670 2011 2 nee_RequiredCapacityAndOrMinimumPaymentsNextYear nee false debit duration Estimated required capacity and/or minimum payments for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 210000000 210000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the next year. No authoritative reference available. false 1671 2012 2 nee_RequiredCapacityAndOrMinimumPaymentsThirdYear nee false debit duration Estimated required capacity and/or minimum payments for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 210000000 210000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the third year. No authoritative reference available. false 1672 2013 2 nee_RequiredCapacityAndOrMinimumPaymentsFourthYear nee false debit duration Estimated required capacity and/or minimum payments for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 200000000 200000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fourth year. No authoritative reference available. false 1673 2014 2 nee_RequiredCapacityAndOrMinimumPaymentsFifthYear nee false debit duration Estimated required capacity and/or minimum payments for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 180000000 180000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fifth year. No authoritative reference available. false 1674 Thereafter 2 nee_RequiredCapacityAndOrMinimumPaymentsAfterFifthYear nee false debit duration Estimated required capacity and/or minimum payments after the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 350000000 350000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments after the fifth year. No authoritative reference available. false 1705 FPL Qualifying Facilities Capacity Payments [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 28 USD true false false false FPL Qualifying Facilities Capacity Payments [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplQualifyingFacilitiesCapacityPaymentsMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 1734 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1740 2010 2 nee_RequiredCapacityAndOrMinimumPaymentsRemainderCurrentYear nee false debit duration Estimated required capacity and/or minimum payments for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 150000000 150000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the remainder of the current year. No authoritative reference available. false 1741 2011 2 nee_RequiredCapacityAndOrMinimumPaymentsNextYear nee false debit duration Estimated required capacity and/or minimum payments for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 270000000 270000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the next year. No authoritative reference available. false 1742 2012 2 nee_RequiredCapacityAndOrMinimumPaymentsThirdYear nee false debit duration Estimated required capacity and/or minimum payments for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 290000000 290000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the third year. No authoritative reference available. false 1743 2013 2 nee_RequiredCapacityAndOrMinimumPaymentsFourthYear nee false debit duration Estimated required capacity and/or minimum payments for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 270000000 270000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fourth year. No authoritative reference available. false 1744 2014 2 nee_RequiredCapacityAndOrMinimumPaymentsFifthYear nee false debit duration Estimated required capacity and/or minimum payments for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 270000000 270000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fifth year. No authoritative reference available. false 1745 Thereafter 2 nee_RequiredCapacityAndOrMinimumPaymentsAfterFifthYear nee false debit duration Estimated required capacity and/or minimum payments after the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 2890000000 2890000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments after the fifth year. No authoritative reference available. false 1776 FPL Other Electricity Suppliers Capacity Payments [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 29 USD true false false false FPL Other Electricity Suppliers Capacity Payments [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplOtherElectricitySuppliersCapacityPaymentsMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 1805 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1811 2010 2 nee_RequiredCapacityAndOrMinimumPaymentsRemainderCurrentYear nee false debit duration Estimated required capacity and/or minimum payments for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 5000000 5000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the remainder of the current year. No authoritative reference available. false 1812 2011 2 nee_RequiredCapacityAndOrMinimumPaymentsNextYear nee false debit duration Estimated required capacity and/or minimum payments for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 10000000 10000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the next year. No authoritative reference available. false 1813 2012 2 nee_RequiredCapacityAndOrMinimumPaymentsThirdYear nee false debit duration Estimated required capacity and/or minimum payments for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 5000000 5000000 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the third year. No authoritative reference available. false 1814 2013 2 nee_RequiredCapacityAndOrMinimumPaymentsFourthYear nee false debit duration Estimated required capacity and/or minimum payments for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fourth year. No authoritative reference available. false 1815 2014 2 nee_RequiredCapacityAndOrMinimumPaymentsFifthYear nee false debit duration Estimated required capacity and/or minimum payments for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fifth year. No authoritative reference available. false 1816 Thereafter 2 nee_RequiredCapacityAndOrMinimumPaymentsAfterFifthYear nee false debit duration Estimated required capacity and/or minimum payments after the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [9] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments after the fifth year. No authoritative reference available. false 1847 FPL Natural Gas Including Transportation And Storage Contract Minimum Payments [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 30 USD true false false false FPL Natural Gas Including Transportation And Storage Contract Minimum Payments [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplNaturalGasIncludingTransportationAndStorageContractMinimumPaymentsMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 1876 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1882 2010 2 nee_RequiredCapacityAndOrMinimumPaymentsRemainderCurrentYear nee false debit duration Estimated required capacity and/or minimum payments for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1120000000 1120000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the remainder of the current year. No authoritative reference available. false 1883 2011 2 nee_RequiredCapacityAndOrMinimumPaymentsNextYear nee false debit duration Estimated required capacity and/or minimum payments for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1495000000 1495000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the next year. No authoritative reference available. false 1884 2012 2 nee_RequiredCapacityAndOrMinimumPaymentsThirdYear nee false debit duration Estimated required capacity and/or minimum payments for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 615000000 615000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the third year. No authoritative reference available. false 1885 2013 2 nee_RequiredCapacityAndOrMinimumPaymentsFourthYear nee false debit duration Estimated required capacity and/or minimum payments for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 405000000 405000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fourth year. No authoritative reference available. false 1886 2014 2 nee_RequiredCapacityAndOrMinimumPaymentsFifthYear nee false debit duration Estimated required capacity and/or minimum payments for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 395000000 395000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fifth year. No authoritative reference available. false 1887 Thereafter 2 nee_RequiredCapacityAndOrMinimumPaymentsAfterFifthYear nee false debit duration Estimated required capacity and/or minimum payments after the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 4475000000 4475000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments after the fifth year. No authoritative reference available. false 1918 FPL Oil Contract Minimum Payments [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 31 USD true false false false FPL Oil Contract Minimum Payments [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplOilContractMinimumPaymentsMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 1947 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 1953 2010 2 nee_RequiredCapacityAndOrMinimumPaymentsRemainderCurrentYear nee false debit duration Estimated required capacity and/or minimum payments for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the remainder of the current year. No authoritative reference available. false 1954 2011 2 nee_RequiredCapacityAndOrMinimumPaymentsNextYear nee false debit duration Estimated required capacity and/or minimum payments for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 120000000 120000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the next year. No authoritative reference available. false 1955 2012 2 nee_RequiredCapacityAndOrMinimumPaymentsThirdYear nee false debit duration Estimated required capacity and/or minimum payments for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the third year. No authoritative reference available. false 1956 2013 2 nee_RequiredCapacityAndOrMinimumPaymentsFourthYear nee false debit duration Estimated required capacity and/or minimum payments for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fourth year. No authoritative reference available. false 1957 2014 2 nee_RequiredCapacityAndOrMinimumPaymentsFifthYear nee false debit duration Estimated required capacity and/or minimum payments for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fifth year. No authoritative reference available. false 1958 Thereafter 2 nee_RequiredCapacityAndOrMinimumPaymentsAfterFifthYear nee false debit duration Estimated required capacity and/or minimum payments after the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments after the fifth year. No authoritative reference available. false 1989 FPL Coal Contract Minimum Payments [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 32 USD true false false false FPL Coal Contract Minimum Payments [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_FplCoalContractMinimumPaymentsMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 2018 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 2024 2010 2 nee_RequiredCapacityAndOrMinimumPaymentsRemainderCurrentYear nee false debit duration Estimated required capacity and/or minimum payments for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 40000000 40000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the remainder of the current year. No authoritative reference available. false 2025 2011 2 nee_RequiredCapacityAndOrMinimumPaymentsNextYear nee false debit duration Estimated required capacity and/or minimum payments for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 60000000 60000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the next year. No authoritative reference available. false 2026 2012 2 nee_RequiredCapacityAndOrMinimumPaymentsThirdYear nee false debit duration Estimated required capacity and/or minimum payments for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 10000000 10000000 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the third year. No authoritative reference available. false 2027 2013 2 nee_RequiredCapacityAndOrMinimumPaymentsFourthYear nee false debit duration Estimated required capacity and/or minimum payments for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fourth year. No authoritative reference available. false 2028 2014 2 nee_RequiredCapacityAndOrMinimumPaymentsFifthYear nee false debit duration Estimated required capacity and/or minimum payments for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fifth year. No authoritative reference available. false 2029 Thereafter 2 nee_RequiredCapacityAndOrMinimumPaymentsAfterFifthYear nee false debit duration Estimated required capacity and/or minimum payments after the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 0 0 [10] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments after the fifth year. No authoritative reference available. false 2060 Next Era Energy Resources Contract Minimum Payments [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/commitmentsandcontingenciesdetail false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false false 33 USD true false false false Next Era Energy Resources Contract Minimum Payments [Member] us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis xbrldi http://xbrl.org/2006/xbrldi nee_NextEraEnergyResourcesContractMinimumPaymentsMember us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 2089 Long-term Purchase Commitment [Line Items] 2 us-gaap_LongTermPurchaseCommitmentLineItems us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. false 2095 2010 2 nee_RequiredCapacityAndOrMinimumPaymentsRemainderCurrentYear nee false debit duration Estimated required capacity and/or minimum payments for the remainder of the current year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 860000000 860000000 [11] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the remainder of the current year. No authoritative reference available. false 2096 2011 2 nee_RequiredCapacityAndOrMinimumPaymentsNextYear nee false debit duration Estimated required capacity and/or minimum payments for the next year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 335000000 335000000 [11] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the next year. No authoritative reference available. false 2097 2012 2 nee_RequiredCapacityAndOrMinimumPaymentsThirdYear nee false debit duration Estimated required capacity and/or minimum payments for the third year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 240000000 240000000 [11] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the third year. No authoritative reference available. false 2098 2013 2 nee_RequiredCapacityAndOrMinimumPaymentsFourthYear nee false debit duration Estimated required capacity and/or minimum payments for the fourth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 80000000 80000000 [11] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fourth year. No authoritative reference available. false 2099 2014 2 nee_RequiredCapacityAndOrMinimumPaymentsFifthYear nee false debit duration Estimated required capacity and/or minimum payments for the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 65000000 65000000 [11] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments for the fifth year. No authoritative reference available. false 2100 Thereafter 2 nee_RequiredCapacityAndOrMinimumPaymentsAfterFifthYear nee false debit duration Estimated required capacity and/or minimum payments after the fifth year. false false false false false false false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 true true false false 765000000 765000000 [11] false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Estimated required capacity and/or minimum payments after the fifth year. No authoritative reference available. false 1 Includes allowance for funds used during construction (AFUDC) of approximately $28 million, $47 million, $80 million, $86 million and $31 million in 2010 to 2014, respectively. 2 Includes land, generating structures, transmission interconnection and integration and licensing. 3 Includes projects that have received FPSC approval. Includes pre-construction costs and carrying charges (equal to a pretax AFUDC rate) on construction costs recoverable through the capacity clause of approximately $50 million, $79 million, $67 million and $24 million in 2010 to 2013, respectively. Excludes capital expenditures for the construction costs for the two additional nuclear units at FPL's Turkey Point site beyond what is required to receive an NRC license for each unit. 4 Consists of capital expenditures for planned new wind projects that have received applicable internal approvals, and related transmission. NextEra Energy Resources plans to add new wind generation of approximately 3,500 mw to 5,000 mw in 2010 through 2014, including 600 mw to 850 mw in 2010, at a total cost of approximately $7 billion to $10 billion. 5 Includes nuclear fuel. 6 Consists of capital expenditures for planned new solar projects that have received applicable internal approvals. NextEra Energy Resources plans to add new solar generation of approximately 400 mw to 600 mw in 2010 through 2014 at a total cost of approximately $3 billion to $4 billion. 7 Consists of capital expenditures that have received applicable internal approvals. NextEra Energy Resources plans to add natural gas infrastructure projects totaling approximately $400 million to $600 million in 2010 through 2014. 8 Consists of capital expenditures that have received applicable internal approvals. Excludes capital expenditures for a transmission line in Texas totaling approximately $800 million by 2014. 9 Capacity payments under these contracts, substantially all of which are recoverable through the capacity clause, totaled approximately $137 million and $154 million for the three months ended June 30, 2010 and 2009, respectively, and approximately $286 million and $307 million for the six months ended June 30, 2010 and 2009, respectively. Energy payments under these contracts, which are recoverable through the fuel clause, totaled approximately $114 million and $108 million for the three months ended June 30, 2010 and 2009, respectively, and approximately $213 million and $204 million for the six months ended June 30, 2010 and 2009, respectively. 10 Recoverable through the fuel clause. 11 Includes termination payments associated with wind turbine contracts for projects that have not yet received applicable internal approvals. 4 238 false NoRounding NoRounding UnKnown false true