cm:Concept: us-gaap:FiniteLivedIntangibleAssetsAmortizationMethod
| Finite-Lived Intangible Assets, Amortization Method |
| us-gaap:FiniteLivedIntangibleAssetsAmortizationMethod |
| The amortization method of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company. The straight-line method is the preferred amortization method, unless another method better reflects the pattern in which the asset is consumed. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:FiniteLivedIntangibleAssetsAmortizationMethod |