| Name | FederalHomeLoanBankAdvancesPutableOptionMember |
|---|---|
| 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 |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Federal Home Loan Bank, Advances, Putable Option [Member] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Right, but not the obligation, Federal Home Loan Bank (FHLBank) has to require the borrower to return the advance at par. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| elementCreationTaxonomyVersion | 2014 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:FederalHomeLoanBankAdvancesOptionDomain | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesFederalHomeLoanBanks | |
us-gaap:FederalHomeLoanBankAdvancesOptionDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesFederalHomeLoanBanksFederalHomeLoanBankAdvancesTable |