Shareholders' Equity (Common Stock Issued With The Exercise Of Stock Options (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stockholders' Equity Note [Abstract]
Shares issued (in shares)	0.1	1.0	1.1
Proceeds from the exercise of stock options	$ 3.4	$ 54.5	$ 52.7
Average exercise price per share (in dollars per share)	$ 47.94	$ 53.13	$ 49.91