| Name | SecuredDebtDollarRolls |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:monetaryItemType |
| Period type | instant |
| Substitution Group | xbrli:item |
| Balance | credit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Secured Debt, Dollar Rolls | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Carrying value, as of the balance sheet date, of an agreement to sell a mortgage-backed security with an agreement to purchase a similar mortgage-backed security at a future date. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| 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 | 470 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Section | 45 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 1 | http://fasb.org/us-gaap/role/ref/legacyRef |
| URI | http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:SecuredDebtRepurchaseAndReverseRepurchaseAgreementsAndDollarRollsAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift | |
us-gaap:SecuredDebt | summation-item | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift | |
us-gaap:SecuredDebtRepurchaseAndReverseRepurchaseAgreementsAndDollarRollsAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBrokersAndDealers |