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2.2.0.7 true Employee Retirement Benefits (Details) (USD $) 009010 - Disclosure - Employee Retirement Benefits (Details) true false In Millions false false 1 USD true false false false Pension Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PensionPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 2 USD true false false false Pension Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PensionPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 3 USD true false false false Pension Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PensionPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 4 USD true false false false Pension Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PensionPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ 1 Pension Benefits 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/employeeretirementbenefitsdetails 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 1 USD true false false false Pension Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PensionPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 2 USD true false false false Pension Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PensionPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 3 USD true false false false Pension Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PensionPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 4 USD true false false false Pension Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PensionPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 2 Net Periodic Benefit Cost [Line Items] 2 nee_NetPeriodicBenefitCostLineItems 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 Service Cost 2 us-gaap_DefinedBenefitPlanServiceCost us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 true true false false 15000000 15 false false false 2 true true false false 13000000 13 false false false 3 true true false false 30000000 30 false false false 4 true true false false 26000000 26 false false false xbrli:monetaryItemType monetary The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h false 4 Interest Cost 2 us-gaap_DefinedBenefitPlanInterestCost us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 25000000 25 false false false 2 false true false false 27000000 27 false false false 3 false true false false 51000000 51 false false false 4 false true false false 55000000 55 false false false xbrli:monetaryItemType monetary The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h false 5 Expected return on plan assets 2 us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -60000000 -60 false false false 2 false true false false -60000000 -60 false false false 3 false true false false -120000000 -120 false false false 4 false true false false -119000000 -119 false false false xbrli:monetaryItemType monetary An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 6 Amortization of transition obligation 2 us-gaap_DefinedBenefitPlanAmortizationOfTransitionObligationsAssets us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false xbrli:monetaryItemType monetary The amount of the transition obligation or asset recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 7 Amortization of prior service benefit 2 us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false -1000000 -1 false false false 2 false true false false -1000000 -1 false false false 3 false true false false -2000000 -2 false false false 4 false true false false -2000000 -2 false false false xbrli:monetaryItemType monetary The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 8 Amortization of gains 2 us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 0 0 false false false 2 false true false false -5000000 -5 false false false 3 false true false false 0 0 false false false 4 false true false false -12000000 -12 false false false xbrli:monetaryItemType monetary The amount of gains or losses recognized in net periodic benefit cost Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 9 Net periodic benefit (income) cost 2 us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false -21000000 -21 false false false 2 false true false false -26000000 -26 false false false 3 false true false false -41000000 -41 false false false 4 false true false false -52000000 -52 false false false xbrli:monetaryItemType monetary The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 10 Other Benefits 0 na true na na No definition available. false true false false false false false false false false false http://nexteraenergyresources.com/role/employeeretirementbenefitsdetails 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 Other Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 6 USD true false false false Other Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 7 USD true false false false Other Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 8 USD true false false false Other Benefits nee_NetPeriodicBenefitCostAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember nee_NetPeriodicBenefitCostAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 11 Net Periodic Benefit Cost [Line Items] 2 nee_NetPeriodicBenefitCostLineItems 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 12 Service Cost 2 us-gaap_DefinedBenefitPlanServiceCost us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 1000000 1 false false false 2 false true false false 2000000 2 false false false 3 false true false false 3000000 3 false false false 4 false true false false 2000000 2 false false false xbrli:monetaryItemType monetary The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h false 13 Interest Cost 2 us-gaap_DefinedBenefitPlanInterestCost us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 6000000 6 false false false 2 false true false false 6000000 6 false false false 3 false true false false 11000000 11 false false false 4 false true false false 12000000 12 false false false xbrli:monetaryItemType monetary The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h false 14 Expected return on plan assets 2 us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -1000000 -1 false false false 2 false true false false -1000000 -1 false false false 3 false true false false -1000000 -1 false false false 4 false true false false -1000000 -1 false false false xbrli:monetaryItemType monetary An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 15 Amortization of transition obligation 2 us-gaap_DefinedBenefitPlanAmortizationOfTransitionObligationsAssets us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 1000000 1 false false false 2 false true false false 1000000 1 false false false 3 false true false false 2000000 2 false false false 4 false true false false 2000000 2 false false false xbrli:monetaryItemType monetary The amount of the transition obligation or asset recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 16 Amortization of prior service benefit 2 us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false xbrli:monetaryItemType monetary The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 17 Amortization of gains 2 us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false 3 false true false false 0 0 false false false 4 false true false false 0 0 false false false xbrli:monetaryItemType monetary The amount of gains or losses recognized in net periodic benefit cost Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 18 Net periodic benefit (income) cost 2 us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 true true false false 7000000 7 false false false 2 true true false false 8000000 8 false false false 3 true true false false 15000000 15 false false false 4 true true false false 15000000 15 false false false xbrli:monetaryItemType monetary The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h false 4 18 false Millions UnKnown UnKnown false true