cm:Level2TextBlock: us-gaap:RevenueRecognitionForAlternativeRevenueProgramsPolicy
| Revenue Recognition for Alternative Revenue Programs, Policy [Policy Text Block] |
| us-gaap:RevenueRecognitionForAlternativeRevenueProgramsPolicy |
| Disclosure of accounting policy for revenue recognition related to alternative revenue programs. The major alternative revenue programs can generally be segregated into two categories, programs that adjust billings for the effects of weather abnormalities or broad external factors or to compensate the utility for demand-side management initiatives (for example, no-growth plans and similar conservation efforts); and programs that provide for additional billings (incentive awards) if the utility achieves certain objectives, such as reducing costs, reaching specified milestones, or demonstratively improving customer service. |
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| us-gaap:RevenueRecognitionForAlternativeRevenueProgramsPolicy |