cm:Member: us-gaap:ComprehensiveIncomeMember
| Comprehensive Income [Member] |
| us-gaap:ComprehensiveIncomeMember |
| The change in equity (net assets) of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners. |
| cm:Member |
| [Member] (nonnum:domainItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:ComprehensiveIncomeMember |