cm:Concept: us-gaap:DiscontinuedApplicationOfSpecializedAccountingForRegulatedOperations
| Discontinued Application of Specialized Accounting for Regulated Operations |
| us-gaap:DiscontinuedApplicationOfSpecializedAccountingForRegulatedOperations |
| Net effect of discontinued application of the specialized accounting to all or part of its operations; the entity eliminates from its statement of financial position prepared for general-purpose external financial reporting the effects of any actions of regulators that had been recognized as assets and liabilities pursuant to that specialized accounting but would not have been recognized as assets and liabilities by entities in general except for carrying amounts of plant, equipment, and inventory measured and reported pursuant to that specialized accounting unless those assets are impaired, in which case the carrying amounts of those assets is reduced to reflect that impairment. This element is gross of the related tax effect. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| For Period (duration) |
| Credit |
| false |
| us-gaap:DiscontinuedApplicationOfSpecializedAccountingForRegulatedOperations |