| Name | InterestExpenseDomesticDeposits |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | debit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Interest Expense, Domestic Deposits | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Interest Expense, Domestic Deposits, Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The aggregate interest expense incurred on all domestic deposits. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| SourceName | ASC Reorganization | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2018 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2017-11 | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedReferences | true | http://fasb.org/srt/role/changeNote/changeNote |
| Publisher | FASB | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
| Topic | 942 | http://fasb.org/us-gaap/role/ref/legacyRef |
| SubTopic | 220 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Section | S99 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 1 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Subparagraph | (SX 210.9-04.6) | http://fasb.org/us-gaap/role/ref/legacyRef |
| URI | http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:InterestExpenseDemandDepositAccounts | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:InterestExpenseTimeDeposits | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:InterestExpenseOtherDomesticDeposits | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:InterestExpenseDeposits | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:InterestExpenseDomesticDepositsAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenue | |
us-gaap:InterestExpenseDomesticDepositsAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenueStatementTable | |
us-gaap:InterestExpenseDomesticDepositsAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterest |