CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND ACCUMULATED OTHER COMPREHENSIVE LOSS (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]
Cash dividends, per share (in dollars per share)	$ 0.39	$ 0.39	$ 1.17	$ 1.17
Common stock authorized, amount for future purchases	$ 520.2		$ 520.2