1.0.0.3 true CONSOLIDATED STATEMENT OF SHAREHOLDERS EQUITY AND OTHER COMPREHENSIVE INCOME (USD $) In Millions false 1 $ true false false false Common Stock [Member] us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommonStockMember us-gaap_StatementEquityComponentsAxis explicitMember u002 Standard http://www.xbrl.org/2003/instance shares xbrli 0 false 2 $ true false false false Additional Paid-in Capital [Member] us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_AdditionalPaidInCapitalMember us-gaap_StatementEquityComponentsAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 3 $ true false false false Unearned ESOP Compensation [Member] us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi fpl_UnearnedEsopCompensationMember us-gaap_StatementEquityComponentsAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 4 $ true false false false Accumulated Other Comprehensive Income (Loss) [Member] us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_AccumulatedOtherComprehensiveIncomeMember us-gaap_StatementEquityComponentsAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 5 $ true false false false Retained Earnings [Member] us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_RetainedEarningsMember us-gaap_StatementEquityComponentsAxis explicitMember u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 6 $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 6 3 us-gaap_CommonStockSharesOutstanding us-gaap true na instant shares No definition available. false false false true false false true false false 1 false true 405000000 405.0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 5 3 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false true false false true false false 1 true true 4000000 4 [1] true false 2 true true 4680000000 4680 true false 3 true true -125000000 -125 true false 4 true true 115000000 115 [2] true false 5 true true 5256000000 5256 true false 6 true true 9930000000 9930 false false No definition available. No authoritative reference available. false 7 3 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 1312000000 1312 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 8 3 us-gaap_StockIssuedDuringPeriodValueNewIssues us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 33000000 33 true false 3 false true 3000000 3 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 9 4 us-gaap_StockIssuedDuringPeriodSharesNewIssues us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 1000000 1.0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 10 3 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 59000000 59 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 11 4 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 1000000 1.0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 12 3 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true -654000000 -654 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 13 3 us-gaap_AmortizationOfESOPAward us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 27000000 27 true false 3 false true 8000000 8 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 14 3 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -44000000 -44 [2] true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 15 3 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 45000000 45 [2] true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 18 3 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true -15000000 -15 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 31000000 31 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 19 3 us-gaap_CommonStockSharesOutstanding us-gaap true na instant shares No definition available. false false false true false false false true false 1 false true 407000000 407.0 [3] true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 20 3 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false true false false false true false 1 false true 4000000 4 [1] true false 2 false true 4784000000 4784 true false 3 false true -114000000 -114 true false 4 false true 116000000 116 [2] true false 5 false true 5945000000 5945 true false 6 false true 10735000000 10735 false false No definition available. No authoritative reference available. false 7 3 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 1639000000 1639 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 8 3 us-gaap_StockIssuedDuringPeriodValueNewIssues us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 38000000 38 true false 3 false true 4000000 4 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 9 4 us-gaap_StockIssuedDuringPeriodSharesNewIssues us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 1000000 1.0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 10 3 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 53000000 53 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 11 4 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 1000000 1.0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 12 3 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true -714000000 -714 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 13 3 us-gaap_AmortizationOfESOPAward us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 30000000 30 true false 3 false true 10000000 10 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 14 3 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 40000000 40 [2] true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 15 3 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -167000000 -167 [2] true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 18 3 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -2000000 -2 [2] true false 5 false true 15000000 15 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 19 3 us-gaap_CommonStockSharesOutstanding us-gaap true na instant shares No definition available. false false false true false false false true false 1 false true 409000000 409.0 [3] true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 20 3 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false true false false false true false 1 false true 4000000 4 [1] true false 2 false true 4905000000 4905 true false 3 false true -100000000 -100 true false 4 false true -13000000 -13 [2] true false 5 false true 6885000000 6885 true false 6 false true 11681000000 11681 false false No definition available. No authoritative reference available. false 7 3 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 1615000000 1615 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 8 3 us-gaap_StockIssuedDuringPeriodValueNewIssues us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 204000000 204 true false 3 false true 4000000 4 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 9 4 us-gaap_StockIssuedDuringPeriodSharesNewIssues us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 4000000 4.0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 10 3 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 56000000 56 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 11 4 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 1000000 1.0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 12 3 us-gaap_DividendsCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true -766000000 -766 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 13 3 us-gaap_AmortizationOfESOPAward us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 30000000 30 true false 3 false true 11000000 11 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 14 3 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 165000000 165 [2] true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 15 3 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 22000000 22 [2] true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 16 3 fpl_PremiumOnPubliclyTradedEquityUnitsKnownAsCorporateUnits fpl false na duration monetary Premium on publicly-traded equity units known as Corporate Units false false false false false false false false false 1 false false 0 0 true false 2 false true -47000000 -47 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false Premium on publicly-traded equity units known as Corporate Units No authoritative reference available. false 17 3 fpl_UnamortizedIssuanceCostsOnPubliclyTradedEquityUnitsKnownAsCorporateUnits fpl false na duration monetary Unamortized issuance costs on publicly-traded equity units known as Corporate Units false false false false false false false false false 1 false false 0 0 true false 2 false true -8000000 -8 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false Unamortized issuance costs on publicly-traded equity units known as Corporate Units No authoritative reference available. false 18 3 us-gaap_CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -5000000 -5 [2] true false 5 false true 5000000 5 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 19 3 us-gaap_CommonStockSharesOutstanding us-gaap true na instant shares No definition available. false false false true false false false true false 1 false true 414000000 414.0 [3] true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 false false No definition available. No authoritative reference available. false 20 3 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false true false false false true false 1 true true 4000000 4 [1] true false 2 true true 5140000000 5140 true false 3 true true -85000000 -85 true false 4 true true 169000000 169 [2] true false 5 true true 7739000000 7739 true false 6 true true 12967000000 12967 false false No definition available. No authoritative reference available. false 1 $0.01 par value, authorized - 800,000,000 shares; outstanding shares 413,622,436, 408,915,305 and 407,344,972 at December 31, 2009, 2008 and 2007, respectively. 2 Comprehensive income, which includes net income and other comprehensive income (loss), totaled approximately $1,802 million, $1,512 million and $1,313 million for 2009, 2008 and 2007, respectively. 3 Outstanding and unallocated shares held by the Employee Stock Ownership Plan (ESOP) Trust totaled approximately 6 million, 7 million and 8 million at December 31, 2009, 2008 and 2007, respectively; the original number of shares purchased and held by the ESOP Trust was approximately 25 million shares. false 6 40 false Millions HundredThousands UnKnown false true