CONSOLIDATED STATEMENT OF EQUITY (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Common stock dividends per share (dollars per share)	$ 0.775	$ 0.775	$ 0.775	$ 0.76	$ 0.76	$ 0.76