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CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends declared per common share (in dollars per share)		$ 0.64	$ 0.64
Series D Preferred Stock
Dividends declared per preferred share (in dollars per share)	$ 2.0625	$ 2.0625	0.2349
Preferred stock dividend rate	8.25%	8.25%
Series B Preferred Stock
Dividends declared per preferred share (in dollars per share)	$ 1.3750	$ 1.3750	$ 1.3750
Preferred stock dividend rate	5.50%	5.50%

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

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+ References

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