cm:Concept: us-gaap:CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived
| Capital Leases, Net Investment in Direct Financing Leases, Minimum Payments to be Received |
| us-gaap:CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived |
| Amount of remaining payments as of the balance sheet date that lessees are obligated to make or can be required to make under direct financing leases, including any guarantee of residual value and executory costs. The amount also includes any guaranteed rental payments by an unrelated third-party provided that are financially capable of making such payments. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:CapitalLeasesNetInvestmentInDirectFinancingLeasesMinimumPaymentsToBeReceived |