| Name | SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossRollForward |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| 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 |
|---|---|---|---|
| Securities Purchased under Agreements to Resell, Allowance for Credit Loss [Roll Forward] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLoss | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:SecuritiesPurchasedUnderAgreementsToResellCreditLossExpenseReversal | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossRecovery | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:SecuritiesPurchasedUnderAgreementToResellAllowanceForCreditLossWriteoff | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossPeriodIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLoss | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLoss | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesSecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossTable | |
us-gaap:SecuritiesPurchasedUnderAgreementsToResellCreditLossExpenseReversal | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesSecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossTable | |
us-gaap:SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossRecovery | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesSecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossTable | |
us-gaap:SecuritiesPurchasedUnderAgreementToResellAllowanceForCreditLossWriteoff | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesSecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossTable | |
us-gaap:SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossPeriodIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesSecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossTable |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossLineItems | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:SecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossLineItems | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesSecuritiesPurchasedUnderAgreementsToResellAllowanceForCreditLossTable |