Table: Auction Market Preferred Securities, Stock Series [Table]

Line Label Object Class Period Type Balance Name
1 Auction Market Preferred Securities, Stock Series [Table] [Table]

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesTable
2 Legal Entity [Axis] [Axis]

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 dei:LegalEntityAxis
3 Consolidated Entity [Domain] [Domain]

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 dei:EntityDomain
4 Auction Market Preferred Securities, Stock Series [Axis] [Axis]

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesAxis
5 Auction Market Preferred Securities, Stock Series, Title [Domain] [Domain]

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesTitleDomain
6 Series A [Member] [Member]

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 us-gaap:SeriesAMember
7 Series B [Member] [Member]

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 us-gaap:SeriesBMember
8 Auction Market Preferred Securities, Stock Series [Line Items] [Line Items]

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesLineItems
9 Schedule of Auction Market Preferred Securities by Stock Series [Table Text Block] [Concept] Text Block (HTML) For Period

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 us-gaap:ScheduleOfAuctionMarketPreferredSecuritiesByStockSeriesTextBlock
10 Auction Market Preferred Securities, Stock Series [Hierarchy] [Abstract]

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 added:AuctionMarketPreferredSecuritiesStockSeriesHierarchy
11 Auction Market Preferred Securities, Stock Series, Liquidation Preference [Concept] Text/String For Period

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesLiquidationPreference
12 Auction Market Preferred Securities, Stock Series, Liquidation Value [Concept] Monetary As Of Credit us-gaap:AuctionMarketPreferredSecuritiesStockSeriesLiquidationValue
13 Auction Market Preferred Securities, Stock Series, Par Value Per Share [Concept] Share As Of

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesParValuePerShare
14 Auction Market Preferred Securities, Stock Series, Rate Setting Interval [Concept] Integer For Period

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesRateSettingInterval
15 Auction Market Preferred Securities, Stock Series, Redemption Requirements [Concept] Text/String For Period

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesRedemptionRequirements
16 Auction Market Preferred Securities, Stock Series, Aggregate Redemption Amount [Concept] Monetary As Of Credit us-gaap:AuctionMarketPreferredSecuritiesStockSeriesAggregateRedemptionAmount
17 Auction Market Preferred Securities, Stock Series, Per-Share Redemption Amount [Concept] Share As Of

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesPerShareRedemptionAmount
18 Auction Market Preferred Securities, Stock Series, Shares Authorized [Concept] Shares As Of

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesSharesAuthorized
19 Auction Market Preferred Securities, Stock Series, Value [Concept] Monetary As Of Credit us-gaap:AuctionMarketPreferredSecuritiesStockSeriesValue
20 Auction Market Preferred Securities, Stock Series, Variable Interest Rate Earned [Concept] Perdent For Period

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesVariableInterestRateEarned
21 Auction Market Preferred Securities, Stock Series, Schedule of Dividend Distributions [Hierarchy] [Abstract]

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 us-gaap:AuctionMarketPreferredSecuritiesStockSeriesScheduleOfDividendDistributionsAbstract
22 Auction Market Preferred Securities, Dividend, Cumulative Undistributed [Concept] Monetary As Of Credit us-gaap:AuctionMarketPreferredSecuritiesDividendCumulativeUndistributed
23 Auction Market Preferred Securities, Dividend Arrearages [Concept] Monetary As Of Credit us-gaap:AuctionMarketPreferredSecurities
24 Auction Market Preferred Securities, Dividend Arrearages, Per Share [Concept] Share As Of

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 us-gaap:AuctionMarketPreferredSecuritiesPerShare
25 Auction Market Preferred Securities, Dividend, Paid from Earnings and Capital [Roll Up] [Abstract]

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 us-gaap:AuctionMarketPreferredSecuritiesDividendPaidFromEarningsAndCapitalAbstract
26 Auction Market Preferred Securities, Dividend, Paid from Capital [Concept] Monetary For Period Debit us-gaap:AuctionMarketPreferredSecuritiesDividendPaidFromCapital
27 Auction Market Preferred Securities, Dividend, Paid from Earnings [Concept] Monetary For Period Debit us-gaap:AuctionMarketPreferredSecuritiesDividendPaidFromEarnings
28 Auction Market Preferred Securities, Dividend, Paid from Earnings and Capital, Total [Concept] Monetary For Period Debit us-gaap:AuctionMarketPreferredSecuritiesDividendPaidFromEarningsAndCapital
29 Movement in Auction Market Preferred Securities, Shares Outstanding [Roll Forward] [Abstract]

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 us-gaap:MovementInAuctionMarketPreferredSecuritiesSharesOutstandingRollForward
30 Auction Market Preferred Securities, Shares Outstanding, Beginning Balance [Concept] Shares As Of

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 us-gaap:AuctionMarketPreferredSecuritiesSharesOutstanding
31 Auction Market Preferred Securities, Stock, Shares Outstanding, Period Increase (Decrease) [Roll Up] [Abstract]

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 added:AuctionMarketPreferredSecuritiesStockSharesOutstandingPeriodIncreaseDecreaseRollUp
32 Auction Market Preferred Securities, Shares, Issued [Concept] Shares For Period

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 us-gaap:AuctionMarketPreferredSecuritiesSharesIssued
33 Auction Market Preferred Securities, Shares, Redeemed [Concept] Shares For Period

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 us-gaap:AuctionMarketPreferredSecuritiesSharesRedeemed
34 Auction Market Preferred Securities, Stock, Shares Outstanding, Period Increase (Decrease), Total [Concept] Shares For Period

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 us-gaap:AuctionMarketPreferredSecuritiesStockSharesOutstandingPeriodIncreaseDecrease
35 Auction Market Preferred Securities, Shares Outstanding, Ending Balance [Concept] Shares As Of

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 us-gaap:AuctionMarketPreferredSecuritiesSharesOutstanding