cm:Concept: us-gaap:CapitalLeasesLessorBalanceSheetNetInvestmentInDirectFinancingLeasesNoncurrent
| Capital Leases, Lessor Balance Sheet, Net Investment in Direct Financing Leases, Noncurrent |
| us-gaap:CapitalLeasesLessorBalanceSheetNetInvestmentInDirectFinancingLeasesNoncurrent |
| The net amount due after one year of the balance sheet date or beyond the normal operating cycle, if longer, consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:CapitalLeasesLessorBalanceSheetNetInvestmentInDirectFinancingLeasesNoncurrent |