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cm:Axis: us-gaap:AuctionMarketPreferredSecuritiesStockSeriesAxis
Standard label: Auction Market Preferred Securities, Stock Series [Axis]
Name: us-gaap:AuctionMarketPreferredSecuritiesStockSeriesAxis
Documentation: Information by title of series or issue of auction market preferred securities.
Object type: cm:Axis
Data type: Text/String (xbrli:stringItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: true
Workiva Wdesk Taxonomy Analyzer: us-gaap:AuctionMarketPreferredSecuritiesStockSeriesAxis

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Labels
Label Role Language
Auction Market Preferred Securities, Stock Series [Axis] http://www.xbrl.org/2003/role/label 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 50 3 http://fasb.org/us-gaap/role/ref/legacyRef 505
FASB Accounting Standards Codification 505 10 50 4 http://fasb.org/us-gaap/role/ref/legacyRef 505
FASB Accounting Standards Codification 505 10 50 5 http://fasb.org/us-gaap/role/ref/legacyRef 505
FASB Accounting Standards Codification 505 10 50 11 http://fasb.org/us-gaap/role/ref/legacyRef 505