| Name | OtherThanTemporaryImpairmentLossesInvestmentsReclassificationAdjustmentOfNoncreditPortionIncludedInNetIncomeHeldtomaturitySecuritiesBeforeTax |
|---|---|
| Namespace | http://fasb.org/us-gaap/2021-01-31 |
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| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | credit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Other Comprehensive Loss, Held-to-maturity Security, Reclassification Adjustment from AOCI for Noncredit Portion of OTTI, before Tax | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Other Comprehensive Loss, Held-to-maturity Security, Reclassification Adjustment from AOCI for Noncredit Portion of OTTI, before Tax, Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Amount, before tax, of reclassification adjustment from accumulated other comprehensive income for other than temporary impairment (OTTI) realized in earnings for investment in held-to-maturity security. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
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| Publisher | FASB | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
| Topic | 220 | http://fasb.org/us-gaap/role/ref/legacyRef |
| SubTopic | 10 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Section | 45 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 16A | http://fasb.org/us-gaap/role/ref/legacyRef |
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| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:OtherComprehensiveLossHeldToMaturitySecurityReclassificationAdjustmentFromAociForNoncreditPortionOfOttiSaleBeforeTax | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfOtherComprehensiveIncomeAlternative | |
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| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:OtherComprehensiveLossHeldToMaturitySecurityOttiBeforeTaxAfterAdjustments | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfOtherComprehensiveIncomeAlternative | |
us-gaap:OtherComprehensiveLossHeldToMaturitySecurityReclassificationAdjustmentFromAociForNoncreditPortionOfOttiBeforeTaxAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfOtherComprehensiveIncome | |
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us-gaap:StatementOfStockholdersEquityAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesFederalHomeLoanBanks | |
us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsHeldtomaturitySecuritiesReportableItemsAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities | |
us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsHeldtomaturitySecuritiesReportableItemsAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable | |
us-gaap:OtherComprehensiveLossHeldToMaturitySecurityReclassificationAdjustmentFromAociForNoncreditPortionOfOttiBeforeTaxAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity |