cm:Concept: us-gaap:PartnersCapitalAccountUnitBasedCompensation
| Partners' Capital Account, Unit-based Payment Arrangement, Amount |
| us-gaap:PartnersCapitalAccountUnitBasedCompensation |
| Amount of increase (decrease) in partners' capital account for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Credit |
| false |
| us-gaap:PartnersCapitalAccountUnitBasedCompensation |