Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]
Dividends declared on common stock, per share	$ 0.62	$ 0.62	$ 0.62	$ 0.62	$ 0.62	$ 0.62	$ 1.86	$ 1.86