CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Shares purchased in lieu of tax withholding (in shares)	(9)	(27)	(36)
Dividends paid per share (in usd per share)	$ 1.30	$ 1.20	$ 0.12