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2.2.0.7 false CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) 003000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) true false In Millions false false 1 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 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 $ 3 CASH FLOWS FROM OPERATING ACTIVITIES 1 us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract 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 xbrli:stringItemType string The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities include all transactions and events that are not defined as investing or financing activities. Operating activities generally involve producing and delivering goods and providing services. Cash flows from operating activities are generally the cash effects of transactions and other events that enter into the determination of net income. false 4 Net income 2 nee_NetIncomeLossConsolidatedProfit nee false credit duration The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the... false false false false false false false false false false false terselabel false 1 true true false false 973000000 973 false false false 2 true true false false 734000000 734 false false false xbrli:monetaryItemType monetary The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. No authoritative reference available. false 5 Adjustments to reconcile net income to net cash provided by (used in) operating activities: 2 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract 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 xbrli:stringItemType string Cash generated by or used in operating activities of continuing operations; excludes cash flows from discontinued operations. false 6 Depreciation and amortization 3 us-gaap_DepreciationAndAmortization 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 800000000 800 false false false 2 false true false false 844000000 844 false false false xbrli:monetaryItemType monetary The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 false 7 Nuclear fuel amortization 3 nee_NuclearFuelAmortization nee false na duration The current period expense charged against earnings for the amortization of nuclear fuel to recognize its cost over its... false false false false false false false false false false false terselabel false 1 false true false false 140000000 140 false false false 2 false true false false 119000000 119 false false false xbrli:monetaryItemType monetary The current period expense charged against earnings for the amortization of nuclear fuel to recognize its cost over its useful live. No authoritative reference available. false 8 Unrealized (gains) losses on marked to market energy contracts 3 us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 false true false false -291000000 -291 false false false 2 false true false false 27000000 27 false false false xbrli:monetaryItemType monetary The aggregate increase (decrease) in the market value of open derivatives, commodity, or energy contracts. These gains (losses) are included in earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 9 Deferred income taxes 3 us-gaap_DeferredIncomeTaxExpenseBenefit 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 280000000 280 false false false 2 false true false false 73000000 73 false false false xbrli:monetaryItemType monetary The component of income tax expense for the period representing the net change in the entity's deferred tax assets and liabilities pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 289 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 false 10 Cost recovery clauses and franchise fees 3 nee_CostRecoveryClausesAndFranchiseFees nee false na duration This element represents the net effect on cash flow from operations of the underrecovery or overrecovery of cost recovery... false false false false false false false false false false false terselabel false 1 false true false false -600000000 -600 false false false 2 false true false false 268000000 268 false false false xbrli:monetaryItemType monetary This element represents the net effect on cash flow from operations of the underrecovery or overrecovery of cost recovery clauses and franchise fees. No authoritative reference available. false 11 Change in prepaid option premiums and derivative settlements 3 nee_ChangeInPrepaidOptionPremiumsAndDerivativeSettlements nee false na duration This element represents the net effect on cash flow from operations from the change in prepaid option premiums and the... false false false false false false false false false false false terselabel false 1 false true false false 166000000 166 false false false 2 false true false false 62000000 62 false false false xbrli:monetaryItemType monetary This element represents the net effect on cash flow from operations from the change in prepaid option premiums and the settlement of derivative contracts. No authoritative reference available. false 12 Equity in earnings of equity method investees 3 us-gaap_IncomeLossFromEquityMethodInvestments 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 -23000000 -23 false false false 2 false true false false -20000000 -20 false false false xbrli:monetaryItemType monetary This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 19 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 6 -Subparagraph b false 13 Distributions of earnings from equity method investees 3 us-gaap_EquityMethodInvestmentDividendsOrDistributions 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 30000000 30 false false false xbrli:monetaryItemType monetary This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 19 false 14 Changes in operating assets and liabilities: 2 us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract 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 xbrli:stringItemType string No definition available. false 15 Customer receivables 3 us-gaap_IncreaseDecreaseInAccountsReceivable us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 false true false false -54000000 -54 false false false 2 false true false false -5000000 -5 false false false xbrli:monetaryItemType monetary The net change during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 16 Other receivables 3 us-gaap_IncreaseDecreaseInOtherReceivables us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 false true false false 17000000 17 false false false 2 false true false false 17000000 17 false false false xbrli:monetaryItemType monetary The net change during the reporting period in other amounts due to the reporting entity, which are not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 17 Materials, supplies and fossil fuel inventory 3 us-gaap_IncreaseDecreaseInInventories us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 false true false false 51000000 51 false false false 2 false true false false 62000000 62 false false false xbrli:monetaryItemType monetary The net change during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 18 Other current assets 3 nee_IncreaseDecreaseInOtherCurrentAssets nee false na duration The net change during the reporting period in other operating current assets not otherwise defined in the taxonomy. false false false false false false false false false false false terselabel false 1 false true false false -205000000 -205 false false false 2 false true false false -63000000 -63 false false false xbrli:monetaryItemType monetary The net change during the reporting period in other operating current assets not otherwise defined in the taxonomy. No authoritative reference available. false 19 Other assets 3 nee_IncreaseDecreaseInOtherOperatingAssetsNoncurrent nee false na duration The net change during the reporting period in other operating noncurrent assets not otherwise defined in the taxonomy. false false false false false false false false false false false terselabel false 1 false true false false 95000000 95 false false false 2 false true false false -30000000 -30 false false false xbrli:monetaryItemType monetary The net change during the reporting period in other operating noncurrent assets not otherwise defined in the taxonomy. No authoritative reference available. false 20 Accounts payable 3 us-gaap_IncreaseDecreaseInAccountsPayable 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 360000000 360 false false false 2 false true false false 59000000 59 false false false xbrli:monetaryItemType monetary The net change during the reporting period in the aggregate amount of obligations due within one year (or one business cycle). This may include trade payables, amounts due to related parties, royalties payable, and other obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 21 Customer deposits 3 us-gaap_IncreaseDecreaseInCustomerDeposits 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 22000000 22 false false false 2 false true false false 17000000 17 false false false xbrli:monetaryItemType monetary The net change during the period in the amount of customer money held in customer accounts, including security deposits, collateral for a current or future transactions, initial payment of the cost of acquisition or for the right to enter into a contract or agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 22 Margin cash collateral 3 nee_IncreaseDecreaseInMarginCashCollateral nee false na duration This element represents the net effect on cash flow from operations from the change in "Margin Deposit Assets", as defined in... false false false false false false false false false false false terselabel false 1 false true false false -20000000 -20 false false false 2 false true false false -192000000 -192 false false false xbrli:monetaryItemType monetary This element represents the net effect on cash flow from operations from the change in "Margin Deposit Assets", as defined in the UGT, and from the change in the amount of cash placed on deposit with the company by counterparties as security for trading or derivative contracts. No authoritative reference available. false 23 Income taxes 3 us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable 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 -4000000 -4 false false false 2 false true false false 13000000 13 false false false xbrli:monetaryItemType monetary The net change during the period in the amount of cash payments due to taxing authorities for taxes that are based on the reporting entity's earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 24 Interest and other taxes 3 nee_IncreaseDecreaseInInterestAndOtherTaxes nee false na duration The net change during the reporting period in interest payable, which represents the amount owed to note holders, bond... false false false false false false false false false false false terselabel false 1 false true false false 151000000 151 false false false 2 false true false false 160000000 160 false false false xbrli:monetaryItemType monetary The net change during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity. AND The net change during the period in the amount of cash payments due to taxing authorities for nonincome-related taxes. No authoritative reference available. false 25 Other current liabilities 3 nee_IncreaseDecreaseInOtherCurrentLiabilities nee false na duration The net change during the reporting period in other current operating obligations not otherwise defined in the taxonomy. false false false false false false false false false false false terselabel false 1 false true false false -87000000 -87 false false false 2 false true false false -28000000 -28 false false false xbrli:monetaryItemType monetary The net change during the reporting period in other current operating obligations not otherwise defined in the taxonomy. No authoritative reference available. false 26 Other liabilities 3 nee_IncreaseDecreaseInOtherLiabilitiesNotOtherwiseDefined nee false na duration The net change during the reporting period in other noncurrent operating obligations not otherwise defined in the taxonomy. false false false false false false false false false false false terselabel false 1 false true false false -35000000 -35 false false false 2 false true false false 31000000 31 false false false xbrli:monetaryItemType monetary The net change during the reporting period in other noncurrent operating obligations not otherwise defined in the taxonomy. No authoritative reference available. false 27 Other - net 2 us-gaap_OtherNoncashExpense 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 -9000000 -9 false false false 2 false true false false -34000000 -34 false false false xbrli:monetaryItemType monetary Other expenses included in net income that result in no cash inflows or outflows in the period which are not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 28 Net cash provided by operating activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 1748000000 1748 false false false 2 false true false false 2144000000 2144 false false false xbrli:monetaryItemType monetary The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 29 CASH FLOWS FROM INVESTING ACTIVITIES 1 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 30 Capital expenditures of FPL 2 nee_CapitalExpendituresOfFpl nee false na duration The cash outflow for capital expenditures of a public utility for electric utility plant and equipment. Amount includes the... false false false false false false false false false false false terselabel false 1 false true false false -1462000000 -1462 false false false 2 false true false false -1159000000 -1159 false false false xbrli:monetaryItemType monetary The cash outflow for capital expenditures of a public utility for electric utility plant and equipment. Amount includes the allowance for borrowed funds used in construction and excludes the allowance for equity funds used during construction and excludes expenditures related to nuclear fuel, which has a separate taxonomy. No authoritative reference available. false 31 Independent power and other investments of NextEra Energy Resources 2 nee_IndependentPowerInvestments nee false na duration The cash outflow for capital expenditures related to independent power projects of a non-utility company. Amount includes... false false false false false false false false false false false terselabel false 1 false true false false -1168000000 -1168 false false false 2 false true false false -1099000000 -1099 false false false xbrli:monetaryItemType monetary The cash outflow for capital expenditures related to independent power projects of a non-utility company. Amount includes capitalized interest and spending on equity method investees accounted for under the equity method of accounting but excludes expenditures related to nuclear fuel, which has a separate taxonomy. No authoritative reference available. false 32 Cash grants under the American Recovery and Reinvestment Act of 2009 2 nee_CashGrantsUnderAmericanRecoveryAndReinvestmentActOf nee false na duration Cash grants under the American Recovery and Reinvestment Act of 2009 false false false false false false false false false false false terselabel false 1 false true false false 511000000 511 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Cash grants under the American Recovery and Reinvestment Act of 2009 No authoritative reference available. false 33 Funds received from a spent fuel settlement 2 nee_FundsReceivedFromSpentFuelSettlementAgreement nee false na duration Funds received from the US government related to property, plant and equipment costs in settlement of lawsuits against the US... false false false false false false false false false false false terselabel false 1 false true false false 0 0 false false false 2 false true false false 86000000 86 false false false xbrli:monetaryItemType monetary Funds received from the US government related to property, plant and equipment costs in settlement of lawsuits against the US Department of Energy for failure to dispose of spent nuclear fuel. No authoritative reference available. false 34 Nuclear fuel purchases 2 us-gaap_PaymentsForProceedsFromNuclearFuel 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 -98000000 -98 false false false 2 false true false false -167000000 -167 false false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from any material that is commonly used in the generation of nuclear energy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15, 16, 17 false 35 Other capital expenditures 2 nee_OtherCapitalExpenditures nee false na duration The cash outflow for acquisition of or capital improvements of property, plant and equipment, used to produce goods or... false false false false false false false false false false false terselabel false 1 false true false false -29000000 -29 false false false 2 false true false false -20000000 -20 false false false xbrli:monetaryItemType monetary The cash outflow for acquisition of or capital improvements of property, plant and equipment, used to produce goods or deliver services, of the company's non reportable segments. No authoritative reference available. false 36 Sale of independent power investments 2 nee_SaleOfIndependentPowerInvestments nee false na duration The cash inflow from the sales related to independent power projects of a non-utility company. false false false false false false false false false false false terselabel false 1 false true false false 16000000 16 false false false 2 false true false false 5000000 5 false false false xbrli:monetaryItemType monetary The cash inflow from the sales related to independent power projects of a non-utility company. No authoritative reference available. false 37 Proceeds from sale of securities in special use funds 2 nee_ProceedsFromSaleOfSecuritiesInSpecialUseFunds nee false na duration Proceeds from the sale and maturity of securities held in nuclear decommissioning trust funds and a regulated utility's storm... false false false false false false false false false false false terselabel false 1 false true false false 3063000000 3063 false false false 2 false true false false 1711000000 1711 false false false xbrli:monetaryItemType monetary Proceeds from the sale and maturity of securities held in nuclear decommissioning trust funds and a regulated utility's storm restoration funds. No authoritative reference available. false 38 Purchases of securities in special use funds 2 nee_PurchasesOfSecuritiesInSpecialUseFunds nee false na duration Purchases of securities held in nuclear decommissioning trust funds and a regulated utility's storm restoration funds. false false false false false false false false false false false terselabel false 1 false true false false -3123000000 -3123 false false false 2 false true false false -1750000000 -1750 false false false xbrli:monetaryItemType monetary Purchases of securities held in nuclear decommissioning trust funds and a regulated utility's storm restoration funds. No authoritative reference available. false 39 Proceeds from sale of other securities 2 nee_ProceedsFromSaleOfOtherSecurities nee false na duration Proceeds from the sale and maturity of securities held by an entity excluding securities held in nuclear decommissioning... false false false false false false false false false false false terselabel false 1 false true false false 438000000 438 false false false 2 false true false false 286000000 286 false false false xbrli:monetaryItemType monetary Proceeds from the sale and maturity of securities held by an entity excluding securities held in nuclear decommissioning trust funds and a regulated utility's storm restoration funds, which are reported in a separate taxonomy. No authoritative reference available. false 40 Purchases of other securities 2 nee_PurchasesOfOtherSecurities nee false na duration Purchases of securities held by an entity excluding securities held in nuclear decommissioning trust funds and a regulated... false false false false false false false false false false false terselabel false 1 false true false false -427000000 -427 false false false 2 false true false false -320000000 -320 false false false xbrli:monetaryItemType monetary Purchases of securities held by an entity excluding securities held in nuclear decommissioning trust funds and a regulated utility's storm restoration funds, which are reported in a separate taxonomy. No authoritative reference available. false 41 Other - net 2 us-gaap_PaymentsForProceedsFromOtherInvestingActivities 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 -4000000 -4 false false false 2 false true false false 6000000 6 false false false xbrli:monetaryItemType monetary The net cash outflow (inflow) from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 false 42 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false -2283000000 -2283 false false false 2 false true false false -2421000000 -2421 false false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from investing activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 43 CASH FLOWS FROM FINANCING ACTIVITIES 1 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 44 Issuances of long-term debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 1585000000 1585 false false false 2 false true false false 2372000000 2372 false false false xbrli:monetaryItemType monetary The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b false 45 Retirements of long-term debt 2 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -269000000 -269 false false false 2 false true false false -1314000000 -1314 false false false xbrli:monetaryItemType monetary The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b false 46 Sale of differential membership interests 2 nee_SaleOfDifferentialMembershipInterests nee false debit duration No definition available. false false false false false false false false false false false false 1 false true false false 190000000 190 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 47 Net change in short-term debt 2 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false -54000000 -54 false false false 2 false true false false -743000000 -743 false false false xbrli:monetaryItemType monetary The net cash inflow (outflow) for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 false 48 Issuances of common stock 2 us-gaap_ProceedsFromIssuanceOfCommonStock us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 69000000 69 false false false 2 false true false false 83000000 83 false false false xbrli:monetaryItemType monetary The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a false 49 Dividends on common stock 2 us-gaap_PaymentsOfDividends us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -410000000 -410 false false false 2 false true false false -382000000 -382 false false false xbrli:monetaryItemType monetary The cash outflow from the entity's earnings to the shareholders. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a false 50 Other - net 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 15000000 15 false false false 2 false true false false 2000000 2 false false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 false 51 Net cash provided by financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 1126000000 1126 false false false 2 false true false false 18000000 18 false false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from financing activity for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 52 Net increase (decrease) in cash and cash equivalents 1 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 591000000 591 false false false 2 false true false false -259000000 -259 false false false xbrli:monetaryItemType monetary The net change between the beginning and ending balance of cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 53 Cash and cash equivalents at beginning of period 1 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false true false false 238000000 238 false false false 2 false true false false 535000000 535 false false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 54 Cash and cash equivalents at end of period 1 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false true false false 829000000 829 false false false 2 false true false false 276000000 276 false false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 55 SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES 1 us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Designated to encapsulate the entire footnote disclosure that gives information on the supplemental cash flow activities for noncash (or part noncash) transactions for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. false 56 Accrued property additions 2 nee_AccruedPropertyAdditions nee false credit duration No definition available. false false false false false false false false false false false false 1 true true false false 555000000 555 false false false 2 true true false false 851000000 851 false false false xbrli:monetaryItemType monetary No definition available. No authoritative reference available. false 2 54 false Millions UnKnown UnKnown false true