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cm:Concept: us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateExistingIncomeTaxExpenseBenefit
Standard label: Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Existing Income Tax Expense (Benefit)
Name: us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateExistingIncomeTaxExpenseBenefit
Documentation: Amount of income tax expense (benefit) for which accounting for tax effect for remeasurement of deferred tax from change in tax rate is incomplete pursuant to Tax Cuts and Jobs Act and no reasonable estimate is determined.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: For Period (duration)
Balance type: Debit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateExistingIncomeTaxExpenseBenefit

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Labels
Label Role Language
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Existing Income Tax Expense (Benefit) http://www.xbrl.org/2003/role/label en-US
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Existing Income Tax Expense (Benefit), Total http://www.xbrl.org/2003/role/totalLabel en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 740 10 S99 2A (SAB Topic 5.EE.Q2(c)) http://www.xbrl.org/2009/role/commonPracticeRef 740