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cm:Concept: us-gaap:AuctionMarketPreferredSecuritiesStockSharesOutstandingPeriodIncreaseDecrease
Standard label: Auction Market Preferred Securities, Stock, Shares Outstanding, Period Increase (Decrease)
Name: us-gaap:AuctionMarketPreferredSecuritiesStockSharesOutstandingPeriodIncreaseDecrease
Documentation: The increase (decrease) in the number of Auction Market Preferred Securities during the period being reported.
Object type: cm:Concept
Data type: Shares (xbrli:sharesItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:AuctionMarketPreferredSecuritiesStockSharesOutstandingPeriodIncreaseDecrease

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Labels
Label Role Language
Auction Market Preferred Securities, Stock, Shares Outstanding, Period Increase (Decrease) http://www.xbrl.org/2003/role/label en-US
Auction Market Preferred Securities, Stock, Shares Outstanding, Period Increase (Decrease), Total http://www.xbrl.org/2003/role/totalLabel en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02.28) http://fasb.org/us-gaap/role/ref/legacyRef 210
FASB Accounting Standards Codification 505 10 S99 1 (SX 210.3-04) http://fasb.org/us-gaap/role/ref/legacyRef 505