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cm:Level3TextBlock: us-gaap:ScheduleOfAuctionMarketPreferredSecuritiesByStockSeriesTextBlock
Standard label: Schedule of Auction Market Preferred Securities by Stock Series [Table Text Block]
Name: us-gaap:ScheduleOfAuctionMarketPreferredSecuritiesByStockSeriesTextBlock
Documentation: Tabular disclosure of information pertaining to auction market preferred securities, including liquidation preference, liquidation value, par value, rate setting interval, redemption requirements, dividend distributions, roll forward of shares outstanding, shares authorized, aggregate value of auction market preferred securities, variable interest rate earned, and other information necessary to a fair presentation. If redeemable, the auction market preferred securities are redeemable solely at the option of the issuer.
Object type: cm:Level3TextBlock
Data type: Text Block (HTML) (nonnum:textBlockItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:ScheduleOfAuctionMarketPreferredSecuritiesByStockSeriesTextBlock
Examples of this text block disclosure: AuctionMarketPreferredSecuritiesByStockSeries

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Labels
Label Role Language
Schedule of Auction Market Preferred Securities by Stock Series [Table Text Block] 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