Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended					9 Months Ended
	Feb. 01, 2021	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 29, 2021	Oct. 30, 2018
Distribution Made to Limited Partner [Line Items]
Future cash settlement accrual for executed repurchases of common stock		$ 2.0			$ 1.5		$ 2.0	$ 1.5
Repurchase of common stock (in shares)		288,781			248,310		727,198	248,310
Repurchase aggregate cost		$ 59.0	$ 61.5	$ 25.0	$ 50.0	$ 193.9
October 2018 Stock Repurchase Program
Distribution Made to Limited Partner [Line Items]
Authorized stock repurchase amount										$ 300.0
Remaining unused authorization for stock repurchase program									$ 97.9
Repurchase of common stock (in shares)					245,132			245,132
Repurchase aggregate cost					$ 49.2			$ 49.2
2021 Stock Repurchase Program
Distribution Made to Limited Partner [Line Items]
Authorized stock repurchase amount									$ 500.0
Remaining unused authorization for stock repurchase program		$ 300.2					$ 300.2
Repurchase of common stock (in shares)		288,781			3,178		727,198	3,178
Repurchase aggregate cost		$ 59.0			$ 0.8		$ 145.5	$ 0.8
Stock Repurchase Agreement with The Duchossois Group, Inc Affiliate
Distribution Made to Limited Partner [Line Items]
Repurchase of common stock (in shares)	1,000,000
Price per common stock (in dollars per share)	$ 193.94
Repurchase aggregate cost	$ 193.9
Total Repurchase Programs
Distribution Made to Limited Partner [Line Items]
Repurchase aggregate cost		$ 59.0			$ 50.0		$ 145.5	$ 50.0