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cm:Concept: us-gaap:AccrualForEnvironmentalLossContingenciesDiscount
Standard label: Accrual for Environmental Loss Contingencies, Discount
Name: us-gaap:AccrualForEnvironmentalLossContingenciesDiscount
Documentation: Amount of imputed interest necessary to reduce (reconcile) the undiscounted amount of the accrual for environmental loss contingencies to the present value.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: As Of (instant)
Balance type: Debit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:AccrualForEnvironmentalLossContingenciesDiscount

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Labels
Label Role Language
Accrual for Environmental Loss Contingencies, Discount http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 450 20 S99 1 (SAB Topic 5.Y.Q1) http://fasb.org/us-gaap/role/ref/legacyRef 450