| Standard label: | Proceeds from (Repayments of) Short-term Debt, Maturing in Three Months or Less |
| Name: | us-gaap:ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess |
| Documentation: | The cash inflow from a borrowing net of the cash outflow from repayment of a borrowing having initial term of repayment within three months. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess |
| Label | Role | Language |
| Proceeds from (Repayments of) Short-term Debt, Maturing in Three Months or Less | http://www.xbrl.org/2003/role/label | en-US |
| Proceeds from (Repayments of) Short-term Debt, Maturing in Three Months or Less, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 230 10 45 9 (c) | http://www.xbrl.org/2009/role/commonPracticeRef | 230 |
| FASB Accounting Standards Codification 230 10 45 14 (b) | http://www.xbrl.org/2009/role/commonPracticeRef | 230 |
| FASB Accounting Standards Codification 230 10 45 15 (b) | http://www.xbrl.org/2009/role/commonPracticeRef | 230 |