Long-Term Debt - Long-term Debt Components (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total long-term debt principal	$ 2,414.9	$ 2,213.7
Less: current portion of long-term debt	(32.5)	(73.0)
Long-term debt before debt issuance costs and discount	2,382.4	2,140.7
Less: debt issuance costs and discount	(19.8)	(18.8)
Long-term debt, net of current portion	2,362.6	2,121.9
Other Debt
Debt Instrument [Line Items]
Total long-term debt principal	8.9	17.6
Term Loan | Term A Loan
Debt Instrument [Line Items]
Total long-term debt principal	1,150.0	1,148.4
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total long-term debt principal	256.0	47.7
Senior Notes
Debt Instrument [Line Items]
Total long-term debt principal	$ 1,000.0	$ 1,000.0