cm:Level2TextBlock: us-gaap:FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts
Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts [Policy Text Block] |
us-gaap:FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts |
Disclosure of accounting policy for charging off uncollectible financing receivables, including, but not limited to, factors and methodologies used in estimating the allowance for credit loss. |
cm:Level2TextBlock |
Text Block (HTML) (nonnum:textBlockItemType) |
For Period (duration) |
(no balance type) |
false |
us-gaap:FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts |