cm:Concept: us-gaap:OtherSignificantNoncashTransactionValueOfConsiderationReceived1
| Other Significant Noncash Transaction, Value of Consideration Received |
| us-gaap:OtherSignificantNoncashTransactionValueOfConsiderationReceived1 |
| The value of the noncash (or part noncash) consideration received in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Debit |
| false |
| us-gaap:OtherSignificantNoncashTransactionValueOfConsiderationReceived1 |