| Name | DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLossAbstract |
|---|---|
| Namespace | http://fasb.org/us-gaap/2021-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss [Abstract] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| elementCreationTaxonomyVersion | 2021 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| SourceName | Improvements-Financial Instruments:Taxonomy Technical Improvement | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2021 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2020-09 | http://fasb.org/srt/role/changeNote/changeNote |
| NewElement | true | http://fasb.org/srt/role/changeNote/changeNote |
| Source_ASU_Number | 2019-04 | http://fasb.org/srt/role/changeNote/changeNote |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesDebtSecuritiesHeldToMaturityCreditQualityIndicatorTable | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesDebtSecuritiesHeldToMaturityCreditQualityIndicatorTable | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesDebtSecuritiesHeldToMaturityCreditQualityIndicatorTable | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesDebtSecuritiesHeldToMaturityCreditQualityIndicatorTable | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesDebtSecuritiesHeldToMaturityCreditQualityIndicatorTable | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesDebtSecuritiesHeldToMaturityCreditQualityIndicatorTable | |
us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesDebtSecuritiesHeldToMaturityCreditQualityIndicatorTable |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:DebtSecuritiesHeldToMaturityCreditQualityIndicatorLineItems | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesHeldToMaturityCreditQualityIndicatorLineItems | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesDebtSecuritiesHeldToMaturityCreditQualityIndicatorTable |