cm:Concept: us-gaap:OtherOwnershipInterestsCumulativeCashDistributions
| Other Ownership Interests, Cumulative Cash Distributions |
| us-gaap:OtherOwnershipInterestsCumulativeCashDistributions |
| Aggregate cumulative cash distributions made to the other unit holders in a limited partnership or master limited partnership. Does not include limited or general partners' ownership interests. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:OtherOwnershipInterestsCumulativeCashDistributions |