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Debt - Components of Debt (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Debt Instrument [Line Items]
Unamortized debt discount	$ (8.0)	$ (159.9)
Debt issuance costs	(16.0)	(15.2)
Total debt, net	1,406.7	1,273.9
Less: current portion	26.9	25.1
Total long-term debt, net	1,379.8	1,248.8
Revolving Credit Facility expires May 2024
Debt Instrument [Line Items]
Long-term debt, gross	$ 0.0	0.0
Convertible Debt \| 0.375% Convertible Senior Notes due September 2026
Debt Instrument [Line Items]
Debt, interest rate	0.375%		0.375%
Long-term debt, gross	$ 800.0	800.0
Secured Debt \| Term loan due May 2028
Debt Instrument [Line Items]
Long-term debt, gross	493.8	497.5
Secured Debt \| Equipment financing due May 2024
Debt Instrument [Line Items]
Long-term debt, gross	11.2	16.0
Secured Debt \| Equipment financing due November 2025
Debt Instrument [Line Items]
Long-term debt, gross	24.3	29.6
Secured Debt \| Equipment financing due July 2028
Debt Instrument [Line Items]
Long-term debt, gross	$ 35.3	38.2
Secured Debt \| 5.15% Mortgage due November 2025
Debt Instrument [Line Items]
Debt, interest rate	5.15%
Long-term debt, gross	$ 66.1	$ 67.7