cm:Table: us-gaap:FinancialSupportForNonconsolidatedLegalEntityTable
| Financial Support for Nonconsolidated Legal Entity [Table] |
| us-gaap:FinancialSupportForNonconsolidatedLegalEntityTable |
| Disclosure of information about financial support provided to a nonconsolidated legal entity that is required to comply with or operate in accordance with requirements that are similar to those included in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. |
| cm:Table |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| true |
| us-gaap:FinancialSupportForNonconsolidatedLegalEntityTable |