Condensed Consolidated Statements of Stockholders' Investment (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]
Dividends declared, per share (in dollars per share)	$ 0.51	$ 0.51	$ 0.51	$ 0.51	$ 0.51	$ 0.51