cm:Concept: us-gaap:IncreaseDecreaseInNotesReceivableRelatedPartiesCurrent
| Increase (Decrease) in Notes Receivable, Related Parties, Current |
| us-gaap:IncreaseDecreaseInNotesReceivableRelatedPartiesCurrent |
| The increase (decrease) during the reporting period in the amount owed to the reporting entry (during the current year or operating cycle) in the form of loans and obligations (generally evidenced by promissory notes) made to the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; an entity and its principal owners, management, or member of their immediate families; affiliates; or other parties with the ability to exert significant influence. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Credit |
| false |
| us-gaap:IncreaseDecreaseInNotesReceivableRelatedPartiesCurrent |