Consolidated Statement of Changes in Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Changes in Equity [Abstract]
Dividends declared, per share of common stock (dollars per share)	$ 1.75	$ 1.69	$ 1.34
Dividends declared, Variable return of cash, per share of common stock (dollars per share)	$ 0.20