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Equity - Preferred Shares Tendered and Common Shares Issued (Details) - shares shares in Thousands			3 Months Ended	12 Months Ended
	Nov. 23, 2021	Nov. 25, 2020	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Preferred Shares Tendered | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					6,880
Preferred Shares Tendered | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				8,647	544
Common Shares Initially Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					38,389
Common Shares Initially Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				61,498	2,788
Common Shares Issued
Class of Stock [Line Items]
Shares tendered and issued (in shares)				7,776	4,117
Common Shares Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					3,839
Common Shares Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				7,776	279
Preferred Stock, Series D
Class of Stock [Line Items]
Preferred stock percentage	8.45%	8.45%	8.45%	8.45%
Preferred Stock, Series D | Preferred Shares Tendered
Class of Stock [Line Items]
Shares tendered and issued (in shares)				(617)	(598)
Preferred Stock, Series D | Preferred Shares Tendered | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					575
Preferred Stock, Series D | Preferred Shares Tendered | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				617	23
Preferred Stock, Series D | Common Shares Initially Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					3,211
Preferred Stock, Series D | Common Shares Initially Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				4,174	131
Preferred Stock, Series D | Common Shares Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					321
Preferred Stock, Series D | Common Shares Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				653	13
Preferred Stock, Series F
Class of Stock [Line Items]
Preferred stock percentage	7.375%	7.375%	7.375%	7.375%
Preferred Stock, Series F | Preferred Shares Tendered
Class of Stock [Line Items]
Shares tendered and issued (in shares)				(1,640)	(1,909)
Preferred Stock, Series F | Preferred Shares Tendered | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					1,755
Preferred Stock, Series F | Preferred Shares Tendered | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				1,640	154
Preferred Stock, Series F | Common Shares Initially Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					9,791
Preferred Stock, Series F | Common Shares Initially Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				11,185	795
Preferred Stock, Series F | Common Shares Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					979
Preferred Stock, Series F | Common Shares Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				1,482	80
Preferred Stock, Series G
Class of Stock [Line Items]
Preferred stock percentage	7.375%	7.375%	7.375%	7.375%
Preferred Stock, Series G | Preferred Shares Tendered
Class of Stock [Line Items]
Shares tendered and issued (in shares)				(2,891)	(1,777)
Preferred Stock, Series G | Preferred Shares Tendered | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					1,663
Preferred Stock, Series G | Preferred Shares Tendered | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				2,891	114
Preferred Stock, Series G | Common Shares Initially Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					9,279
Preferred Stock, Series G | Common Shares Initially Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				21,371	573
Preferred Stock, Series G | Common Shares Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					928
Preferred Stock, Series G | Common Shares Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				2,764	57
Preferred Stock, Series H
Class of Stock [Line Items]
Preferred stock percentage	7.50%	7.50%	7.50%	7.50%
Preferred Stock, Series H | Preferred Shares Tendered
Class of Stock [Line Items]
Shares tendered and issued (in shares)				(1,361)	(1,131)
Preferred Stock, Series H | Preferred Shares Tendered | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					1,029
Preferred Stock, Series H | Preferred Shares Tendered | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				1,361	102
Preferred Stock, Series H | Common Shares Initially Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					5,742
Preferred Stock, Series H | Common Shares Initially Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				10,033	515
Preferred Stock, Series H | Common Shares Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					574
Preferred Stock, Series H | Common Shares Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				1,217	52
Preferred Stock, Series I
Class of Stock [Line Items]
Preferred stock percentage	7.50%	7.50%	7.50%	7.50%
Preferred Stock, Series I | Preferred Shares Tendered
Class of Stock [Line Items]
Shares tendered and issued (in shares)				(2,138)	(2,009)
Preferred Stock, Series I | Preferred Shares Tendered | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					1,858
Preferred Stock, Series I | Preferred Shares Tendered | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				2,138	151
Preferred Stock, Series I | Common Shares Initially Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					10,366
Preferred Stock, Series I | Common Shares Initially Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				14,735	774
Preferred Stock, Series I | Common Shares Issued | Prior Exchange Offers
Class of Stock [Line Items]
Shares tendered and issued (in shares)					1,037
Preferred Stock, Series I | Common Shares Issued | Privately Negotiated Exchange Agreements
Class of Stock [Line Items]
Shares tendered and issued (in shares)				1,660	77

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Extinguishment Of Preferred Stock, Shares

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

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