Table: Schedule of Available-for-sale Securities [Table]

Line Label Object Class Period Type Balance Name
1 Schedule of Available-for-sale Securities [Table] [Table]

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 us-gaap:ScheduleOfAvailableForSaleSecuritiesTable
2 Legal Entity [Axis] [Axis]

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 dei:LegalEntityAxis
3 Consolidated Entity [Domain] [Domain]

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 dei:EntityDomain
4 Major Types of Debt and Equity Securities [Axis] [Axis]

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 us-gaap:ScheduleOfAvailableForSaleSecuritiesMajorTypesOfDebtAndEquitySecuritiesAxis
5 Major Types of Debt and Equity Securities, All Types [Domain] [Domain]

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 us-gaap:MajorTypesOfDebtAndEquitySecuritiesDomain
6 Securities (Assets) [Member] [Member]

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 us-gaap:SecuritiesAssetsMember
7 Equity Securities [Member] [Member]

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 us-gaap:EquitySecuritiesMember
8 Common Stock [Member] [Member]

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 us-gaap:CommonStockMember
9 Preferred Stock [Member] [Member]

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 us-gaap:PreferredStockMember
10 Nonredeemable Preferred Stock [Member] [Member]

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 us-gaap:NonredeemablePreferredStockMember
11 Redeemable Preferred Stock [Member] [Member]

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 us-gaap:RedeemablePreferredStockMember
12 Convertible Preferred Stock [Member] [Member]

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 us-gaap:ConvertiblePreferredStockMember
13 Debt Securities [Member] [Member]

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 us-gaap:DebtSecuritiesMember
14 US Treasury and Government [Member] [Member]

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 us-gaap:USTreasuryAndGovernmentMember
15 US Treasury Securities [Member] [Member]

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 us-gaap:USTreasurySecuritiesMember
16 US Government Agencies Debt Securities [Member] [Member]

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 us-gaap:USGovernmentAgenciesDebtSecuritiesMember
17 US Government-sponsored Enterprises Debt Securities [Member] [Member]

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 us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMember
18 US States and Political Subdivisions Debt Securities [Member] [Member]

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 us-gaap:USStatesAndPoliticalSubdivisionsMember
19 Foreign Government Debt Securities [Member] [Member]

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 us-gaap:ForeignGovernmentDebtSecuritiesMember
20 Corporate Debt Securities [Member] [Member]

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 us-gaap:CorporateDebtSecuritiesMember
21 Domestic Corporate Debt Securities [Member] [Member]

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 us-gaap:DomesticCorporateDebtSecuritiesMember
22 Foreign Corporate Debt Securities [Member] [Member]

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 us-gaap:ForeignCorporateDebtSecuritiesMember
23 Commercial Paper, Not Included with Cash and Cash Equivalents [Member] [Member]

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 us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalentsMember
24 Convertible Debt Securities [Member] [Member]

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 us-gaap:ConvertibleDebtSecuritiesMember
25 Asset-backed Securities [Member] [Member]

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 us-gaap:AssetBackedSecuritiesMember
26 Collateralized Mortgage Backed Securities [Member] [Member]

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 us-gaap:MortgageBackedSecuritiesMember
27 Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] [Member]

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 us-gaap:MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
28 Mortgage-backed Securities, Issued by Private Enterprises [Member] [Member]

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 us-gaap:MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
29 Residential Mortgage Backed Securities [Member] [Member]

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 us-gaap:ResidentialMortgageBackedSecuritiesMember
30 Commercial Mortgage Backed Securities [Member] [Member]

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 us-gaap:CommercialMortgageBackedSecuritiesMember
31 Collateralized Debt Obligations [Member] [Member]

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 us-gaap:CollateralizedDebtObligationsMember
32 Asset-backed Securities, Securitized Loans and Receivables [Member] [Member]

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 us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember
33 Interest-Only-Strip [Member] [Member]

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 us-gaap:InterestOnlyStripMember
34 Principal-Only-Strip [Member] [Member]

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 us-gaap:PrincipalOnlyStripMember
35 Fixed Income Securities [Member] [Member]

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 us-gaap:FixedIncomeSecuritiesMember
36 Auction Rate Securities [Member] [Member]

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 us-gaap:AuctionRateSecuritiesMember
37 Variable Rate Demand Obligation [Member] [Member]

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 us-gaap:VariableRateDemandObligationMember
38 Other Debt Obligations [Member] [Member]

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 us-gaap:OtherDebtSecuritiesMember
39 Schedule of Available-for-sale Securities [Line Items] [Line Items]

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 us-gaap:ScheduleOfAvailableForSaleSecuritiesLineItems
40 Available-for-sale Securities [Table Text Block] [Concept] Text Block (HTML) For Period

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 us-gaap:AvailableForSaleSecuritiesTextBlock
41 Schedule of Available-for-sale Securities [Hierarchy] [Abstract]

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 added:ScheduleAvailable-for-saleSecuritiesHierarchy
42 Available-for-sale Securities, Basis for Valuation, Other than Equity Securities [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesBasisForValuationOtherThanEquitySecurities
43 Available-for-sale Securities, Purchased Options, Price Policy [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesPurchasedOptionsPricePolicy
44 Available-for-sale Securities, Current [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesCurrentAbstract
45 Available-for-sale Securities, Debt Securities, Current [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent
46 Available-for-sale Securities, Equity Securities, Current [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesEquitySecuritiesCurrent
47 Available-for-sale Securities, Current, Total [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesCurrent
48 Available-for-sale Securities, Noncurrent [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesNoncurrentAbstract
49 Available-for-sale Securities, Debt Securities, Noncurrent [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent
50 Available-for-sale Securities, Equity Securities, Noncurrent [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesEquitySecuritiesNoncurrent
51 Available-for-sale Securities, Noncurrent, Total [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesNoncurrent
52 Available-for-sale Securities [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesAbstract
53 Available-for-sale Securities, Debt Securities [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtSecurities
54 Available-for-sale Securities, Equity Securities [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesEquitySecurities
55 Available-for-sale Securities, Total [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecurities
56 Available-for-sale Securities, Amortized Cost Basis [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesAmortizedCostBasisAbstract
57 Available-for-sale Equity Securities, Amortized Cost Basis [Concept] Monetary As Of Debit us-gaap:AvailableForSaleEquitySecuritiesAmortizedCostBasis
58 Available-for-sale Debt Securities, Amortized Cost Basis [Concept] Monetary As Of Debit us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
59 Available-for-sale Securities, Amortized Cost Basis, Total [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesAmortizedCost
60 Available-for-sale Securities, Gross Unrealized Gain (Loss) [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesGrossUnrealizedGainLossAbstract
61 Available-for-sale Securities, Gross Unrealized Gains [Concept] Monetary As Of Debit us-gaap:AvailableforsaleSecuritiesGrossUnrealizedGain
62 Available-for-sale Securities, Gross Unrealized Losses [Concept] Monetary As Of Credit us-gaap:AvailableForSaleSecuritiesGrossUnrealizedLosses1
63 Available-for-sale Securities, Gross Unrealized Gain (Loss), Total [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesGrossUnrealizedGainLoss
64 Available-for-sale Securities, Gross Gains (Losses), Derivatives [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesGrossGainsLossesNetDerivativesAbstract
65 Available-for-sale Securities, Gross Gains, Derivatives [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesGrossGainsDerivatives
66 Available-for-sale Securities, Gross Losses, Derivatives [Concept] Monetary For Period Debit us-gaap:AvailableForSaleSecuritiesGrossLossesDerivatives
67 Available-for-sale Securities, Gross Gains (Losses), Derivatives, Total [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesGrossGainsLossesNetDerivatives
68 Available-for-sale Securities, Debt Maturities [Hierarchy] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAbstract
69 Available-for-sale Securities, Debt Maturities, Basis of Allocation [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesDebtMaturitiesBasisOfAllocation
70 Available-for-sale Securities, Debt Maturities, Date [Concept] Date For Period

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 us-gaap:AvailableforsaleSecuritiesDebtMaturitiesDate
71 Available-for-sale Securities, Debt Maturity, Date Range, Low [Concept] Duration String For Period

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 us-gaap:AvailableforsaleSecuritiesDebtMaturityDateRangeLow
72 Available-for-sale Securities, Debt Maturity, Date Range, High [Concept] Duration String For Period

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 us-gaap:AvailableforsaleSecuritiesDebtMaturityDateRangeHigh
73 Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAmortizedCostAbstract
74 Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
75 Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
76 Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost
77 Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost
78 Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost
79 Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Total [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost
80 Available-for-sale Securities, Debt Maturities, Fair Value [Hierarchy] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesDebtMaturitiesFairValueAbstract
81 Available-for-sale Securities, Debt Maturities, within One Year, Fair Value [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
82 Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
83 Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
84 Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
85 Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue
86 Available-for-sale Securities, Transfers to Trading [Hierarchy] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesTransfersToTradingAbstract
87 Available-for-sale Securities, Transfers to Trading, Gains (Losses), Basis (Methodology) of Amount Reclassified [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesTransfersToTradingGainsLossesBasisMethodologyOfAmountReclassified
88 Available-for-sale Securities, Transfers to Trading, Gains (Losses) [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesTransfersToTradingGainsLossesNetAbstract
89 Available-for-sale Securities, Transfers to Trading, Gross Gains [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesTransfersToTradingGrossGains
90 Available-for-sale Securities, Transfers to Trading, Gross Losses [Concept] Monetary For Period Debit us-gaap:AvailableForSaleSecuritiesTransfersToTradingGrossLosses
91 Available-for-sale Securities, Transfers to Trading, Gains (Losses), Total [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesTransfersToTradingGainsLossesNet
92 Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Hierarchy] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesGrossRealizedGainLossAbstract
93 Available-for-sale Securities, Gross Realized Gains (Losses), Cost Basis (Methodology) of Securities Sold [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesGrossRealizedGainsLossesCostBasisMethodologyOfSecuritiesSold
94 Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds
95 Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments [Roll Up] [Abstract]

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 us-gaap:AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairmentsAbstract
96 Available-for-sale Securities, Gross Realized Gains [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesGrossRealizedGains
97 Available-for-sale Securities, Gross Realized Losses, Excluding Other than Temporary Impairments [Concept] Monetary For Period Debit us-gaap:AvailableforsaleSecuritiesGrossRealizedLossesExcludingOtherThanTemporaryImpairments
98 Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments, Total [Concept] Monetary For Period Credit us-gaap:AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments
99 Available-for-sale Securities, Gross Realized Gain (Loss) [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesGrossRealizedGainLossNetAbstract
100 Available-for-sale Securities, Gross Realized Gains [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesGrossRealizedGains
101 Available-for-sale Securities, Gross Realized Losses [Concept] Monetary For Period Debit us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses
102 Available-for-sale Securities, Gross Realized Gain (Loss), Total [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesGrossRealizedGainLossNet
103 Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTaxAbstract
104 Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss) before Taxes [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLoss
105 Available-for-sale Securities, Income Tax Expense on Change in Unrealized Holding Gain (Loss) [Concept] Monetary For Period Debit us-gaap:AvailableForSaleSecuritiesIncomeTaxExpenseOnChangeInUnrealizedHoldingGainOrLoss
106 Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax, Total [Concept] Monetary For Period Credit us-gaap:AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax
107 Available-for-sale Securities, Continuous Unrealized Loss Position [Hierarchy] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract
108 Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract
109 Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
110 Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
111 Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
112 Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAbstract
113 Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses [Concept] Monetary As Of Debit us-gaap:AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1
114 Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses [Concept] Monetary As Of Debit us-gaap:AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1
115 Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total [Concept] Monetary As Of Debit us-gaap:AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1
116 Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Hierarchy] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionQualitativeDisclosureAbstract
117 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Nature [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNature
118 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Cause [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureCause
119 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions [Concept] Decimal As Of

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 us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions
120 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Severity [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureSeverity
121 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOther
122 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Key Performance Indicator [Hierarchy] [Abstract]

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherKeyPerformanceIndicatorAbstract
123 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Default Rate [Concept] Perdent For Period

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherDefaultRate
124 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Delinquency Rate [Concept] Perdent For Period

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 us-gaap:AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherDelinquencyRate
125 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Percentage of Nonperforming Assets [Concept] Perdent For Period

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherPercentageOfNonperformingAssets
126 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Loan to Collateral Value [Concept] Perdent For Period

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherLoanToCollateralValue
127 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Third Party Guarantees [Hierarchy] [Abstract]

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherThirdPartyGuaranteesAbstract
128 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Third Party Guarantees, Description [Concept] Text/String For Period

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherThirdPartyGuaranteesDescription
129 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Third Party Guarantees, Amount [Concept] Monetary As Of Debit us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherThirdPartyGuaranteesAmount
130 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Level of Subordination [Concept] Decimal As Of

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherLevelOfSubordination
131 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Vintage [Concept] Date For Period

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherVintage
132 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Geographic Concentration [Concept] Text/String For Period

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherGeographicConcentration
133 Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Fair Value Volatility, Rate [Concept] Perdent For Period

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 us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherFairValueVolatilityRate
134 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities [Roll Up] [Abstract]

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesAbstract
135 Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities [Concept] Monetary For Period Debit us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities
136 Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities [Concept] Monetary For Period Debit us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities
137 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Total [Concept] Monetary For Period Debit us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities
138 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures [Hierarchy] [Abstract]

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresAbstract
139 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Methodology [Concept] Text/String For Period

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresMethodology
140 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Significant Inputs [Concept] Text/String For Period

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresSignificantInputs
141 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Key Performance Indicator [Hierarchy] [Abstract]

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*

 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresKeyPerformanceIndicatorAbstract
142 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Default Rate [Concept] Perdent For Period

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresDefaultRate
143 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Delinquency Rate [Concept] Perdent For Period

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresDelinquencyRate
144 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Percentage of Nonperforming Assets [Concept] Perdent For Period

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresPercentageOfNonperformingAssets
145 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Loan to Collateral Value [Concept] Perdent For Period

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresLoanToCollateralValue
146 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Third Party Guarantees [Hierarchy] [Abstract]

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresThirdPartyGuaranteesAbstract
147 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Third Party Guarantees, Description [Concept] Text/String For Period

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresThirdPartyGuaranteesDescription
148 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Third Party Guarantees, Amount [Concept] Monetary As Of Debit us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresThirdPartyGuaranteesAmount
149 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Level of Subordination [Concept] Decimal As Of

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresLevelOfSubordination
150 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Vintage [Concept] Date For Period

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresVintage
151 Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Geographic Concentration [Concept] Text/String For Period

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 us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresGeographicConcentration
152 Available-for-sale Securities, Other Disclosure Items [Hierarchy] [Abstract]

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 us-gaap:AvailableforsaleSecuritiesOtherDisclosureItemsAbstract
153 Available-for-sale Securities, Failed Auction, Value [Concept] Monetary As Of Debit us-gaap:AvailableforsaleSecuritiesFailedAuctionValue
154 Available-for-sale Securities, Sold at Par [Concept] Monetary For Period Debit us-gaap:AvailableforsaleSecuritiesSoldAtPar
155 Available-for-sale Securities, Restricted, Disclosure [Hierarchy] [Abstract]

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 us-gaap:AvailableforsaleSecuritiesRestrictedDisclosureAbstract
156 Available-for-sale Securities, Restrictions, Additional Information [Concept] Text/String For Period

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 us-gaap:AvailableForSaleSecuritiesRestrictionsAdditionalInformation
157 Available-for-sale Securities, Restricted [Roll Up] [Abstract]

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 us-gaap:AvailableForSaleSecuritiesRestrictedAbstract
158 Available-for-sale Securities, Restricted, Current [Concept] Monetary As Of Debit us-gaap:AvailableforsaleSecuritiesRestrictedCurrent
159 Available-for-sale Securities, Restricted, Noncurrent [Concept] Monetary As Of Debit us-gaap:AvailableforsaleSecuritiesRestrictedNoncurrent
160 Available-for-sale Securities, Restricted, Total [Concept] Monetary As Of Debit us-gaap:AvailableForSaleSecuritiesRestricted