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Such securities are reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain or loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 true 52 Decommissioning Trust Funds (Textuals) [Abstract] 2 etr_DecommissioningTrustFundsTextualsAbstract etr false na duration Decommissioning Trust Funds Textuals Abstract. false false false false false true false false false false false verboselabel 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 5 false false false false 0 0 false false false xbrli:stringItemType string Decommissioning Trust Funds Textuals Abstract. false 53 Amortized cost of debt securities 2 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 187500000 187500000 false false false 2 false false false false 0 0 false false false 3 false true false false 187500000 187500000 false false false 4 false false false false 0 0 false false false 5 false true false false 210500000 210500000 false false false xbrli:monetaryItemType monetary This item represents the total of all debt securities grouped by maturity dates, at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are classified neither as held-to-maturity nor trading securities. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph a false 63 Entergy Arkansa's [Member] | Equity Securities [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/decommissioningtrustfundsentergycorporationentergyarkansasentergygulfstateslouisianaentergylouisianaandsystemenergydetails 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 5 false false false false 0 0 false false false false 11 USD true false false false Entergy Arkansa's [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember false false Equity Securities [Member] us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 12 USD true false false false Entergy Arkansa's [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember false false Equity Securities [Member] us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. 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Such gross unrealized gains are the excess of the fair value of the Available-for-sale Securities over their carrying value as of the reporting date. Such gross unrealized gains are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge. All or a portion of the unrealized holding gain of an available-for-sale security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge. 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Such gross unrealized losses are the excess of the carrying value of the Available-for-sale Securities over their fair value as of the reporting date. Such gross unrealized losses are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. 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No authoritative reference available. false 126 Securities held 2 us-gaap_AvailableForSaleSecuritiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel 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 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 127 Fair Value 2 us-gaap_AvailableForSaleSecurities us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 372400000 372400000 false false false 2 false false false false 0 0 false false false 3 false true false false 372400000 372400000 false false false 4 false false false false 0 0 false false false 5 false true false false 349500000 349500000 false false false xbrli:monetaryItemType monetary For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading. Such securities are reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain or loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. 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Such gross unrealized gains are the excess of the fair value of the Available-for-sale Securities over their carrying value as of the reporting date. Such gross unrealized gains are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge. All or a portion of the unrealized holding gain of an available-for-sale security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge. 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Such gross unrealized losses are the excess of the carrying value of the Available-for-sale Securities over their fair value as of the reporting date. Such gross unrealized losses are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph a false 156 Entergy Gulf States Louisiana [Member] | Equity Securities [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/decommissioningtrustfundsentergycorporationentergyarkansasentergygulfstateslouisianaentergylouisianaandsystemenergydetails 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 5 false false false false 0 0 false false false false 20 USD true false false false Entergy Gulf States Louisiana [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi etr_RegistrantSubsidiaryOneMember dei_LegalEntityAxis explicitMember false false Equity Securities [Member] us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 21 USD true false false false Entergy Gulf States Louisiana [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi etr_RegistrantSubsidiaryOneMember dei_LegalEntityAxis explicitMember false false Equity Securities [Member] us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. 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Such securities are reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain or loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. 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Such gross unrealized gains are the excess of the fair value of the Available-for-sale Securities over their carrying value as of the reporting date. Such gross unrealized gains are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge. All or a portion of the unrealized holding gain of an available-for-sale security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge. 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Such gross unrealized gains are the excess of the fair value of the Available-for-sale Securities over their carrying value as of the reporting date. Such gross unrealized gains are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge. All or a portion of the unrealized holding gain of an available-for-sale security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge. 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Such gross unrealized losses are the excess of the carrying value of the Available-for-sale Securities over their fair value as of the reporting date. Such gross unrealized losses are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 16 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 22 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13, 19 false 230 Fair value of debt securities by contractual maturities 2 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel 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 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 231 Less than 1 year 2 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 4700000 4700000 false false false 2 false false false false 0 0 false false false 3 false true false false 4700000 4700000 false false false 4 false false false false 0 0 false false false 5 false true false false 2200000 2200000 false false false xbrli:monetaryItemType monetary This item represents the fair value of debt securities which are expected to mature within one year of the balance sheet date and which are categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 -Subparagraph a false 232 1 year - 5 years 2 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 28400000 28400000 false false false 2 false false false false 0 0 false false false 3 false true false false 28400000 28400000 false false false 4 false false false false 0 0 false false false 5 false true false false 31900000 31900000 false false false xbrli:monetaryItemType monetary This item represents the fair value of debt securities which are expected to mature after one year and through five years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 -Subparagraph c false 234 10 years - 15 years 2 etr_AvailableForSaleSecuritiesDebtMaturitiesAfterTenToFifteenYearsFairValue etr false debit instant Available for sale securities debt maturities after ten to fifteen years fair value. false false false false false false false false false false false verboselabel false 1 false true false false 14000000 14000000 false false false 2 false false false false 0 0 false false false 3 false true false false 14000000 14000000 false false false 4 false false false false 0 0 false false false 5 false true false false 12100000 12100000 false false false xbrli:monetaryItemType monetary Available for sale securities debt maturities after ten to fifteen years fair value. No authoritative reference available. false 235 15 years - 20 years 2 etr_AvailableForSaleSecuritiesDebtMaturitiesAfterFifteenToTwentyYearsFairValue etr false debit instant Available For Sale Securities Debt Maturities After Fifteen to twenty Years Fair Value. false false false false false false false false false false false verboselabel false 1 false true false false 5900000 5900000 false false false 2 false false false false 0 0 false false false 3 false true false false 5900000 5900000 false false false 4 false false false false 0 0 false false false 5 false true false false 5500000 5500000 false false false xbrli:monetaryItemType monetary Available For Sale Securities Debt Maturities After Fifteen to twenty Years Fair Value. No authoritative reference available. false 236 20 years+ 2 etr_AvailableForSaleSecuritiesDebtMaturitiesAfterTwentyYearsFairValue etr false debit instant Available For Sale Securities Debt Maturities After Twenty Years Fair Value. false false false false false false false false false false false totallabel false 1 false true false false 17000000 17000000 false false false 2 false false false false 0 0 false false false 3 false true false false 17000000 17000000 false false false 4 false false false false 0 0 false false false 5 false true false false 15800000 15800000 false false false xbrli:monetaryItemType monetary Available For Sale Securities Debt Maturities After Twenty Years Fair Value. No authoritative reference available. true 237 Total 2 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesFairValue us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 95600000 95600000 false false false 2 false false false false 0 0 false false false 3 false true false false 95600000 95600000 false false false 4 false false false false 0 0 false false false 5 false true false false 91200000 91200000 false false false xbrli:monetaryItemType monetary This item represents the total of all debt securities grouped by maturity dates, at fair value, which are categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 true 238 Decommissioning Trust Funds (Textuals) [Abstract] 2 etr_DecommissioningTrustFundsTextualsAbstract etr false na duration Decommissioning Trust Funds Textuals Abstract. false false false false false true false false false false false verboselabel 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 5 false false false false 0 0 false false false xbrli:stringItemType string Decommissioning Trust Funds Textuals Abstract. false 239 Amortized cost of debt securities 2 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 87100000 87100000 false false false 2 false false false false 0 0 false false false 3 false true false false 87100000 87100000 false false false 4 false false false false 0 0 false false false 5 false true false false 88200000 88200000 false false false xbrli:monetaryItemType monetary This item represents the total of all debt securities grouped by maturity dates, at cost, net of adjustments made for accretion, amortization, other-than-temporary impairments, and hedging, if any, which are classified neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 2 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 20 false 240 Average coupon rate of debt securities 2 etr_AverageCouponRateOfDebtSecuritiesPercentage etr false na instant Average Coupon Rate Of Debt Securities Percentage. false false false false false false false false false false false verboselabel false 1 false true false false 0.0395 0.0395 false false false 2 false false false false 0 0 false false false 3 false true false false 0.0395 0.0395 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false us-types:percentItemType pure Average Coupon Rate Of Debt Securities Percentage. No authoritative reference available. false 241 Average duration of debt securities 2 etr_AverageDurationOfDebtSecuritiesInYears etr false na instant Average duration of debt securities. false false false false false false false false false false false verboselabel false 1 false true false false 4.78 4.78 false false false 2 false false false false 0 0 false false false 3 false true false false 4.78 4.78 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:decimalItemType decimal Average duration of debt securities. 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No authoritative reference available. false 243 Proceeds from the dispositions of debt securities 2 us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt 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 2700000 2700000 false false false 2 false true false false 6900000 6900000 false false false 3 false true false false 29400000 29400000 false false false 4 false true false false 40400000 40400000 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The cash inflow associated with the sale of debt securities classified as available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 -Subparagraph a false 244 Gains from dispositions of debt securities, gross 2 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 30000 30000 false false false 2 false true false false 200000 200000 false false false 3 false true false false 600000 600000 false false false 4 false true false false 1700000 1700000 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph a false 249 Entergy Louisiana [Member] | Equity Securities [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/decommissioningtrustfundsentergycorporationentergyarkansasentergygulfstateslouisianaentergylouisianaandsystemenergydetails 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 5 false false false false 0 0 false false false false 29 USD true false false false Entergy Louisiana [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi etr_RegistrantSubsidiaryTwoMember dei_LegalEntityAxis explicitMember false false Equity Securities [Member] us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 30 USD true false false false Entergy Louisiana [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi etr_RegistrantSubsidiaryTwoMember dei_LegalEntityAxis explicitMember false false Equity Securities [Member] us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember us-gaap_ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 250 Securities held 2 us-gaap_AvailableForSaleSecuritiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel 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 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 251 Fair Value 2 us-gaap_AvailableForSaleSecurities us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 130700000 130700000 false false false 4 false false false false 0 0 false false false 5 false true false false 117900000 117900000 false false false xbrli:monetaryItemType monetary For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading. Such securities are reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain or loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. 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Such gross unrealized gains are the excess of the fair value of the Available-for-sale Securities over their carrying value as of the reporting date. Such gross unrealized gains are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge. All or a portion of the unrealized holding gain of an available-for-sale security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 22 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13, 19 false 253 Total Unrealized Losses 2 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 4200000 4200000 false false false 4 false false false false 0 0 false false false 5 false true false false 5300000 5300000 false false false xbrli:monetaryItemType monetary This item represents the gross unrealized losses for securities which are categorized neither as held-to-maturity nor trading securities. Such gross unrealized losses are the excess of the carrying value of the Available-for-sale Securities over their fair value as of the reporting date. Such gross unrealized losses are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 16 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 22 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13, 19 false 254 Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 2 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel 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 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 255 Less than 12 months Fair Value 2 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 9100000 9100000 false false false 4 false false false false 0 0 false false false 5 false true false false 0 0 false false false xbrli:monetaryItemType monetary This item represents the fair value of securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph a(2) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -Subparagraph a(1) false 256 More than 12 months Fair Value 2 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 26300000 26300000 false false false 4 false false false false 0 0 false false false 5 false true false false 37500000 37500000 false false false xbrli:monetaryItemType monetary This item represents the fair value of securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph a(2) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -Subparagraph a(1) false 259 More than 12 Months Gross Unrealized Losses 2 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 4100000 4100000 false false false 4 false false false false 0 0 false false false 5 false true false false 5300000 5300000 false false false xbrli:monetaryItemType monetary This item represents the excess of [amortized] cost over fair value of securities that have been in a loss position for twelve months or longer for those securities which are categorized neither as held-to-maturity nor trading securities. 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Such gross unrealized gains are the excess of the fair value of the Available-for-sale Securities over their carrying value as of the reporting date. Such gross unrealized gains are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge. All or a portion of the unrealized holding gain of an available-for-sale security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 22 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13, 19 false 284 Total Unrealized Losses 2 us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel 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 5 false true false false 900000 900000 false false false xbrli:monetaryItemType monetary This item represents the gross unrealized losses for securities which are categorized neither as held-to-maturity nor trading securities. Such gross unrealized losses are the excess of the carrying value of the Available-for-sale Securities over their fair value as of the reporting date. Such gross unrealized losses are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph a(2) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -Subparagraph a(1) false 287 More than 12 months Fair Value 2 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 200000 200000 false false false 4 false false false false 0 0 false false false 5 false true false false 900000 900000 false false false xbrli:monetaryItemType monetary This item represents the fair value of securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer. 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No authoritative reference available. false 312 Securities held 2 us-gaap_AvailableForSaleSecuritiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel 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 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 313 Fair Value 2 us-gaap_AvailableForSaleSecurities us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 364100000 364100000 false false false 2 false false false false 0 0 false false false 3 false true false false 364100000 364100000 false false false 4 false false false false 0 0 false false false 5 false true false false 327000000 327000000 false false false xbrli:monetaryItemType monetary For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading. Such securities are reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain or loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. 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Such gross unrealized gains are the excess of the fair value of the Available-for-sale Securities over their carrying value as of the reporting date. Such gross unrealized gains are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge. All or a portion of the unrealized holding gain of an available-for-sale security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge. 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Such gross unrealized losses are the excess of the carrying value of the Available-for-sale Securities over their fair value as of the reporting date. Such gross unrealized losses are included in other comprehensive income in the statement of shareholders' equity, unless the Available-for-sale Security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding loss of an Available-for-sale Security that is designated as being hedged in a fair value hedge shall be recognized in earnings during the period of the hedge, as should other than temporary declines in fair value below costs basis. 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