Employee Benefits - Employee Stock Ownership, 401(K) and Deferred Compensation Plan - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Annual expenses for incentive plans	$ 39.1	$ 26.6	$ 30.1
Employee 401(k) Plans
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Employer contribution as a percent of eligible compensation	3.00%
Vesting percentage in basic and voluntary contributions	100.00%
ESOP and 401(k) Plans
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Vesting period of profit sharing contributions	3 years
Expenses recognized	$ 18.0	$ 14.4	$ 15.7
Employee Stock Ownership Plan (ESOP)
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Shares purchased under defined contribution plan	65,815	94,194	60,768
Average price of shares purchased (in dollars per share)	$ 107.95	$ 82.67	$ 69.99
Aggregate price of shares purchased	$ 7.1	$ 7.8	$ 4.3
Shares held by the ESOP	2,495,777
Deferred Compensation Plan
Employee Stock Ownership, 401(K) And Deferred Compensation Plan
Assets held under trust	$ 51.4