1.0.0.3falseCONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)In Millions, except Per Share datafalse1$falsefalseu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0false2$falsefalseu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0false3$falsefalseu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli0false4$falsefalseu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u002Standardhttp://www.xbrl.org/2003/instancesharesxbrli053us-gaap_Revenuesus-gaaptruecreditdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1truetrue44730000004473falsefalse2truetrue53870000005387falsefalse3truetrue1198800000011988falsefalse4truetrue1240700000012407falsefalseNo definition available.No authoritative reference available.true63us-gaap_OperatingExpensesAbstractus-gaaptruenadurationstringNo definition available.falsefalsefalsefalsefalsetruefalsefalsefalse1falsefalse00falsefalse2falsefalse00falsefalse3falsefalse00falsefalse4falsefalse00falsefalseNo definition available.false74fpl_FuelPurchasedPowerAndInterchangeExpensefplfalsenadurationmonetaryFuel, energy and capacity charges incurred to produce electricity, net of any deferral or recovery of in accordance with...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue21640000002164falsefalse2falsetrue27280000002728falsefalse3falsetrue57730000005773falsefalse4falsetrue64180000006418falsefalseFuel, energy and capacity charges incurred to produce electricity, net of any deferral or recovery of in accordance with Statement of Financial Accounting Standard No.71. Includes amortization of nuclear fuel.No authoritative reference available.false84fpl_OtherOperationsAndMaintenanceExpensesfplfalsenadurationmonetaryAll operating and maintenance expenses that are associated with the entity's normal revenue producing operation, excluding...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue682000000682falsefalse2falsetrue633000000633falsefalse3falsetrue19720000001972falsefalse4falsetrue19260000001926falsefalseAll operating and maintenance expenses that are associated with the entity's normal revenue producing operation, excluding any expenses reported in other line items in the income statement.No authoritative reference available.false94fpl_StormCostAmortizationfplfalsenadurationmonetaryThe amortization of securitized storm-recovery costs as storm-recovery charges are billed to customers.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue30000003falsefalse2falsetrue2000000020falsefalse3falsetrue2900000029falsefalse4falsetrue4600000046falsefalseThe amortization of securitized storm-recovery costs as storm-recovery charges are billed to customers.No authoritative reference available.false104fpl_DepreciationAndAmortizationExcludingNuclearFuelfplfalsenadurationmonetaryThe current period expense charged against earnings on long-lived, physical assets used in the normal conduct of business and...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue430000000430falsefalse2falsetrue348000000348falsefalse3falsetrue12480000001248falsefalse4falsetrue10250000001025falsefalseThe current period expense charged against earnings on long-lived, physical assets used in the normal conduct of business and not intended for resale to allocate or recognize the cost of assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset. Examples include buildings, production equipment and customer lists. Excludes amortization of nuclear fuel.No authoritative reference available.false114fpl_TaxesOtherThanIncomeTaxesfplfalsenadurationmonetaryTaxes other than income taxes include, but are not limited to, property taxes, franchise taxes, federal and state...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue345000000345falsefalse2falsetrue342000000342falsefalse3falsetrue929000000929falsefalse4falsetrue919000000919falsefalseTaxes other than income taxes include, but are not limited to, property taxes, franchise taxes, federal and state unemployment taxes, FICA, regulatory assessment fees and gross receipts taxes.No authoritative reference available.false124us-gaap_OperatingExpensesus-gaaptruedebitdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue36240000003624falsefalse2falsetrue40710000004071falsefalse3falsetrue99510000009951falsefalse4falsetrue1033400000010334falsefalseNo definition available.No authoritative reference available.true133us-gaap_OperatingIncomeLossus-gaaptruecreditdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue849000000849falsefalse2falsetrue13160000001316falsefalse3falsetrue20370000002037falsefalse4falsetrue20730000002073falsefalseNo definition available.No authoritative reference available.true143fpl_TotalOtherDeductionsNetAbstractfplfalsenadurationstringNo definition available.falsefalsefalsefalsefalsetruefalsefalsefalse1falsefalse00falsefalse2falsefalse00falsefalse3falsefalse00falsefalse4falsefalse00falsefalseNo definition available.false154fpl_InterestExpenseAggregateExpensesfplfalsenadurationmonetaryThe aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue-204000000-204falsefalse2falsetrue-203000000-203falsefalse3falsetrue-631000000-631falsefalse4falsetrue-597000000-597falsefalseThe aggregate interest expense incurred on commercial paper, long-term debt, capital leases, customer deposits, and all other borrowings, including debt related commitment fees and debt issuance costs. Amounts is reported net of interest capitalized in accordance with Statement of Financial Accounting Standard No. 34 and net of any allowance for borrowed used during construction in accordance with Statement of Financial Accounting Standard No. 71 Paragraph 15.No authoritative reference available.false164us-gaap_IncomeLossFromEquityMethodInvestmentsus-gaaptruecreditdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue2900000029falsefalse2falsetrue4600000046falsefalse3falsetrue4900000049falsefalse4falsetrue8500000085falsefalseNo definition available.No authoritative reference available.false174fpl_AllowanceForEquityFundsUsedDuringConstructionfplfalsenadurationmonetaryThe allowance for cost of equity funds used during construction, capitalized as part of the cost of plant and equipment for...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue1500000015falsefalse2falsetrue90000009falsefalse3falsetrue4600000046falsefalse4falsetrue2200000022falsefalseThe allowance for cost of equity funds used during construction, capitalized as part of the cost of plant and equipment for the portion financed by equity.No authoritative reference available.false184fpl_InterestIncomefplfalsenadurationmonetaryIncome derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue1500000015falsefalse2falsetrue1300000013falsefalse3falsetrue5800000058falsefalse4falsetrue4900000049falsefalseIncome derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. Also includes interest recovered from ratepayers as permitted by regulators on under recovered storm costs and interest recorded on unrecognized tax benefits in accordance with FASB Interpretation No. 48.No authoritative reference available.false194fpl_OtherThanTemporaryImpairmentLossesOnSecuritiesHeldInNuclearDecomissioningFundsfplfalsenadurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue00falsefalse2falsetrue-40000000-40falsefalse3falsetrue-54000000-54falsefalse4falsetrue-60000000-60falsefalseNo definition available.No authoritative reference available.false204us-gaap_OtherNonoperatingIncomeExpenseus-gaaptruecreditdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue1100000011falsefalse2falsetrue-6000000-6falsefalse3falsetrue3400000034falsefalse4falsetrue20000002falsefalseNo definition available.No authoritative reference available.false214fpl_TotalOtherDeductionsNetfplfalsenadurationmonetaryThe aggregate amount of income (expense) of non-operating activities (that is to say, excluding activities not considered...falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue-134000000-134falsefalse2falsetrue-181000000-181falsefalse3falsetrue-498000000-498falsefalse4falsetrue-499000000-499falsefalseThe aggregate amount of income (expense) of non-operating activities (that is to say, excluding activities not considered part of the operations of the business), not separately disclosed in the income statement due to materiality considerationsNo authoritative reference available.true223fpl_NetIncomeBeforeIncomeTaxesfplfalsenadurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue715000000715falsefalse2falsetrue11350000001135falsefalse3falsetrue15390000001539falsefalse4falsetrue15740000001574falsefalseNo definition available.No authoritative reference available.false233us-gaap_IncomeTaxExpenseBenefitus-gaaptruedebitdurationmonetaryNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue182000000182falsefalse2falsetrue361000000361falsefalse3falsetrue272000000272falsefalse4falsetrue342000000342falsefalseNo definition available.No authoritative reference available.false243fpl_NetIncomeLossConsolidatedProfitfplfalsecreditdurationmonetaryThe portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the...falsefalsefalsefalsefalsefalsefalsefalsefalse1truetrue533000000533falsefalse2truetrue774000000774falsefalse3truetrue12670000001267falsefalse4truetrue12320000001232falsefalseThe 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.true253fpl_EarningsPerShareOfCommonStockAbstractfplfalsenadurationstringNo definition available.falsefalsefalsefalsefalsetruefalsefalsefalse1falsefalse00falsefalse2falsefalse00falsefalse3falsefalse00falsefalse4falsefalse00falsefalseNo definition available.false264us-gaap_EarningsPerShareBasicus-gaaptruenadurationdecimalNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetrue1truetrue1.321.32falsefalse2truetrue1.931.93falsefalse3truetrue3.143.14falsefalse4truetrue3.083.08falsefalseNo definition available.No authoritative reference available.false274us-gaap_EarningsPerShareDilutedus-gaaptruenadurationdecimalNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetrue1truetrue1.311.31falsefalse2truetrue1.921.92falsefalse3truetrue3.123.12falsefalse4truetrue3.063.06falsefalseNo definition available.No authoritative reference available.false283us-gaap_CommonStockDividendsPerShareCashPaidus-gaaptruenadurationdecimalNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetrue1truetrue0.47250.4725falsefalse2truetrue0.44500.4450falsefalse3truetrue1.41751.4175falsefalse4truetrue1.33501.3350falsefalseNo definition available.No authoritative reference available.false293fpl_WeightedAverageNumberOfCommonSharesOutstandingAbstractfplfalsenadurationstringNo definition available.falsefalsefalsefalsefalsetruefalsefalsefalse1falsefalse00falsefalse2falsefalse00falsefalse3falsefalse00falsefalse4falsefalse00falsefalseNo definition available.false304us-gaap_WeightedAverageNumberOfSharesOutstandingBasicus-gaaptruenadurationsharesNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue405100000405.1falsefalse2falsetrue400400000400.4falsefalse3falsetrue403700000403.7falsefalse4falsetrue399800000399.8falsefalseNo definition available.No authoritative reference available.false314us-gaap_WeightedAverageNumberOfDilutedSharesOutstandingus-gaaptruenadurationsharesNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalse1falsetrue408000000408.0falsefalse2falsetrue403000000403.0falsefalse3falsetrue406400000406.4falsefalse4falsetrue402500000402.5falsefalseNo definition available.No authoritative reference available.falsefalse427falseMillionsHundredThousandsNoRoundingfalsetrue