cm:Concept: us-gaap:SaleLeasebackTransactionImputedInterestRate
| Sale Leaseback Transaction, Imputed Interest Rate |
| us-gaap:SaleLeasebackTransactionImputedInterestRate |
| The financing cost related to leases that have been recorded under the deposit method, as a financing or as a capital leases in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller. |
| cm:Concept |
| Percent (num:percentItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:SaleLeasebackTransactionImputedInterestRate |