| Standard label: | Certain Loans and Debt Securities Acquired in Transfer, No Allowance Recorded and No Subsequent Impairment |
| Name: | us-gaap:CertainLoansAndDebtSecuritiesAcquiredInTransferNoAllowanceRecordedAndNoSubsequentImpairment |
| Documentation: | The recorded amount of loans and debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it was probable, at acquisition, that the investor would be unable to collect all contractually required payments receivable, but which are not deemed to be impaired since the acquisition by transfer. Therefore, no allowance for credit losses is recorded. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CertainLoansAndDebtSecuritiesAcquiredInTransferNoAllowanceRecordedAndNoSubsequentImpairment |
| Label | Role | Language |
| Certain Loans and Debt Securities Acquired in Transfer, No Allowance Recorded and No Subsequent Impairment | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 310 10 50 18 | http://fasb.org/us-gaap/role/ref/legacyRef | 310 |
| FASB Accounting Standards Codification 310 30 50 2 (a)(1) | http://fasb.org/us-gaap/role/ref/legacyRef | 310 |
| FASB Accounting Standards Codification 310 30 15 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 310 |