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cm:Concept: us-gaap:LongTermContractForPurchaseOfElectricPowerDateOfContractExpiration
Standard label: Long-term Contract for Purchase of Electric Power, Date of Contract Expiration
Name: us-gaap:LongTermContractForPurchaseOfElectricPowerDateOfContractExpiration
Documentation: Date of contract expiration of long-term contract to purchase electricity from a production plant, in CCYY-MM-DD format.
Object type: cm:Concept
Data type: Date (xbrli:dateItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:LongTermContractForPurchaseOfElectricPowerDateOfContractExpiration

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Labels
Label Role Language
Long-term Contract for Purchase of Electric Power, Date of Contract Expiration 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