Stock-Based Compensation (Stock Options) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Exercised, shares	(1,000,000.0)	(1,100,000)	(400,000)
Exercised, weighted-average exercise price (in dollars per share)	$ 53.13	$ 49.91	$ 33.87
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period (in years)	10 years
Vesting period (in years)	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, beginning balance (in shares)	1,155,693
Options outstanding, weighted-average exercise price, beginning balance (in dollars per share)	$ 52.78
Granted, shares	0
Granted, weighted-average exercise price (in dollars per share)	$ 0
Exercised, shares	(1,025,673)
Exercised, weighted-average exercise price (in dollars per share)	$ 53.13
Forfeited, shares	0
Forfeited, weighted-average exercise price (in dollars per share)	$ 0
Expired, shares	0
Expired, weighted-average exercise price (in dollars per share)	$ 0
Options outstanding, ending balance (in shares)	130,020	1,155,693
Options outstanding, weighted-average exercise price, ending balance (in dollars per share)	$ 50.01	$ 52.78
Options outstanding, weighted-average remaining contractual term (years)	1 year 11 months 19 days
Options outstanding, aggregate intrinsic value	$ 8.7
Options available for future grants (in shares)	2,667,548
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Total intrinsic value of stock options exercised	$ 51.2	$ 9.8	$ 5.2