Stock Compensation - Fair Value of Stock Option Activity (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Number of Shares
Outstanding, beginning of the year, number of shares (in shares) | shares	1,904,749
Exercised, number of shares (in shares) | shares	(674,705)
Canceled or expired number of shares (in shares) | shares	(12,099)
Outstanding, end of the year, number of shares (in shares) | shares	1,217,945
Weighted-average Exercise Price
Outstanding, beginning of year, weighted-average exercise price (in dollars per share) | $ / shares	$ 40.53
Exercised, weighted-average exercise price (in dollars per share) | $ / shares	38.55
Canceled or expired, weighted-average exercise price (in dollars per share) | $ / shares	43.16
Outstanding - end of year, weighted-average exercise price (in dollars per share) | $ / shares	$ 41.59
Outstanding - end of year, weighted-average remaining contractual term (in years)	7 years
Outstanding - end of year, aggregate intrinsic value | $	$ 33.7
Option expected to vest, number of shares (in shares) | shares	1,217,945
Option expected to vest, weighed-average exercise price (in dollars per share) | $ / shares	$ 41.59
Option expected to vest, weighted-average remaining contractual term (in years)	7 years
Option expected to vest, aggregate intrinsic value | $	$ 33.7
Options exercisable, number of shares (In shares) | shares	890,855
Options exercisable, weighted-average exercise price (in dollars per share) | $ / shares	$ 41.00
Options exercisable, weighted-average remaining contractual term (in years)	6 years
Options exercisable, aggregate intrinsic value | $	$ 25.2