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cm:Member: us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember
Standard label: Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Name: us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember
Documentation: Accumulated other comprehensive income (loss) from gain (loss) of derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.
Object type: cm:Member
Data type: [Member] (nonnum:domainItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: true
Workiva Wdesk Taxonomy Analyzer: us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember

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Labels
Label Role Language
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 220 10 45 14A http://www.xbrl.org/2003/role/disclosureRef 220
FASB Accounting Standards Codification 220 10 55 15 http://www.xbrl.org/2003/role/exampleRef 220
FASB Accounting Standards Codification 810 10 50 1A (c)(3) http://www.xbrl.org/2003/role/disclosureRef 810