CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Common stock, per share (in dollars per share)	$ 0.30	$ 0.27
Series I Preferred Stock
Preferred stock, per share (in dollars per share)	414.06	414.06
Series J Preferred Stock
Preferred stock, per share (in dollars per share)	209.48	211.50
Series K Preferred Stock
Preferred stock, per share (in dollars per share)	309.38	309.38
Series L Preferred Stock
Preferred stock, per share (in dollars per share)	281.25	281.25
Class B, Series A Preferred Stock
Preferred stock, per share (in dollars per share)	$ 15.00	$ 15.00