cm:Concept: us-gaap:CapitalLeasesLessorBalanceSheetNetInvestmentInSalesTypeLeasesNoncurrent
| Capital Leases, Lessor Balance Sheet, Net Investment in Sales Type Leases, Noncurrent |
| us-gaap:CapitalLeasesLessorBalanceSheetNetInvestmentInSalesTypeLeasesNoncurrent |
| 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 on sales type leases, and (b) unguaranteed residual value; 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:CapitalLeasesLessorBalanceSheetNetInvestmentInSalesTypeLeasesNoncurrent |