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cm:Axis: us-gaap:LongTermContractForPurchaseOfElectricPowerAxis
Standard label: Long-term Contract for Purchase of Electric Power [Axis]
Name: us-gaap:LongTermContractForPurchaseOfElectricPowerAxis
Documentation: Information by contract related to purchases of electric power.
Object type: cm:Axis
Data type: Text/String (xbrli:stringItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: true
Workiva Wdesk Taxonomy Analyzer: us-gaap:LongTermContractForPurchaseOfElectricPowerAxis

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Labels
Label Role Language
Long-term Contract for Purchase of Electric Power [Axis] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 980 10 S99 1 (SAB Topic 10.D) http://fasb.org/us-gaap/role/ref/legacyRef 980