Shareholders' Equity (Common Stock Issued With The Exercise Of Stock Options) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Stockholders' Equity Note [Abstract]
Shares issued (in actual number of shares)	16,570	250,896	71,030	821,566
Proceeds from the exercise of stock options	$ 0.8	$ 13.6	$ 3.4	$ 42.6
Average exercise price per share (in dollars per share)	$ 48.15	$ 54.27	$ 47.94	$ 51.80