| Name | UnallocatedFinancingReceivablesMember |
|---|---|
| Namespace | http://fasb.org/us-gaap/2021-01-31 |
| Prefix | us-gaap |
| Data type | dtr-types:domainItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Name | Value | Role |
|---|---|---|
| Publisher | XBRL US | http://fasb.org/us-gaap/role/dqc/ruleExclusions |
| ruleId | DQC.0015 | http://fasb.org/us-gaap/role/dqc/ruleExclusions |
| ruleName | Negative Values | http://fasb.org/us-gaap/role/dqc/ruleExclusions |
| ruleDocumentation | The rule does not test these axis/member/element combinations. | http://fasb.org/us-gaap/role/dqc/ruleExclusions |
| URI | https://xbrl.us/data-rule/dqc_0015/ | http://fasb.org/us-gaap/role/dqc/ruleExclusions |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:FinancingReceivablePortfolioSegmentDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftDistributionOfAssetsLiabilitiesAndStockholdersEquityTable | |
us-gaap:FinancingReceivablePortfolioSegmentDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftFinancingReceivableBeforeAllowanceForCreditLossMaturityTable | |
us-gaap:FinancingReceivablePortfolioSegmentDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftFinancingReceivableCreditRatioTable | |
us-gaap:FinancingReceivablePortfolioSegmentDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable | |
dqcrules-0015:Dqc_0015_ExcludeNonNegMembersAbstract | rule-concept | http://fasb.org/us-gaap/role/dqc/0015 |