Statement of Changes in Consolidated Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Common stock, dividends per share (in usd per share)	$ 0.02		$ 0.02	$ 0.02
Class A
Preferred, dividends per share (in usd per share)	$ 0.9375	$ 0.9375	$ 2.8125	$ 2.8125