Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]
Preferred stock dividend declared (usd per share)	$ 14.75	$ 14.75	$ 44.25	$ 44.25
Common stock dividends declared per share (usd per share)	$ 0.170	$ 0.155	$ 0.495	$ 0.620