Long-term Debt - Summary of Long-term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Finance leases	$ 42.9	$ 43.4
Total debt, net of unamortized discount and deferred financing costs	463.0	461.3
Less: Amounts due within one year	(177.3)	(166.7)
Total long-term debt, net of unamortized discount and deferred financing costs	$ 285.7	294.6
Secured debt
Debt Instrument [Line Items]
Effective interest rate (as a percent)	2.21%
Term loan | Secured debt
Debt Instrument [Line Items]
Long-term debt	$ 275.6	282.2
Unamortized deferred financing costs	(0.7)	(0.8)
Senior Notes	$ 274.9	$ 281.4
2 1/4% Notes
Debt Instrument [Line Items]
Effective interest rate (as a percent)	2.60%	5.80%
2 1/4% Notes | Convertible Debt
Debt Instrument [Line Items]
Long-term debt	$ 145.9	$ 145.9
Unamortized deferred financing costs	(0.7)	(9.4)
Total convertible senior notes	145.2	$ 136.5
Less: Amounts due within one year	$ (145.2)
Debt instrument interest rate stated percentage	2.25%