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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
6.375% Series D preferred stock
Preferred stock, dividend rate (as a percent)	6.375%	6.375%
6.25% Series E preferred stock
Preferred stock, dividend rate (as a percent)	6.25%
6.25% Series F preferred stock
Preferred stock, dividend rate (as a percent)	6.25%	6.25%

X

- 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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