| Standard label: | Cash, Period Increase (Decrease), Excluding Exchange Rate Effect |
| Name: | us-gaap:CashPeriodIncreaseDecreaseExcludingExchangeRateEffect |
| Documentation: | Amount of increase (decrease) in cash. Cash is the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes effect from exchange rate changes. |
| 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:CashPeriodIncreaseDecreaseExcludingExchangeRateEffect |
| Label | Role | Language |
| Cash, Period Increase (Decrease), Excluding Exchange Rate Effect | http://www.xbrl.org/2003/role/label | en-US |
| Cash, Period Increase (Decrease), Excluding Exchange Rate Effect, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 230 10 45 24 | http://fasb.org/us-gaap/role/ref/legacyRef | 230 |
| Part Of Roll Up: |
| us-gaap:CashPeriodIncreaseDecrease |