cm:Concept: us-gaap:ExcessTierOneRiskBasedCapitalToRiskWeightedAssets
| Excess Tier One Risk Based Capital to Risk Weighted Assets |
| us-gaap:ExcessTierOneRiskBasedCapitalToRiskWeightedAssets |
| The amount of excess Tier 1 Risk Based Capital (which consists of the types of financial capital considered the most reliable and liquid, primarily Shareholders' equity. Examples of Tier 1 capital are common stock or unit, preferred stock or unit that is irredeemable and noncumulative, and retained earnings) divided by risk-weighted assets which are assets that are weighted for credit risk according to a formula used by the Reserve Bank. |
| cm:Concept |
| Percent (num:percentItemType) |
| As Of (instant) |
| (no balance type) |
| false |
| us-gaap:ExcessTierOneRiskBasedCapitalToRiskWeightedAssets |