Contractual interest rate for funds borrowed, under the debt agreement.

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Long-term Debt - Debt Summary (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jul. 01, 2021	Dec. 31, 2020	May 31, 2020	Jan. 19, 2017
Debt Instrument [Line Items]
Principal	$ 2,859.1		$ 2,431.6
Less: Current maturities of long-term debt	(95.1)		(81.4)
Less: Debt discount	(76.5)		(86.2)
Less: Debt issuance costs	(33.1)		(32.8)
Long-term debt, net of current maturities, debt discount and debt issuance costs	2,654.4		2,231.2
Senior Secured Credit Facilities \| Revolving Credit Facility due 2023
Debt Instrument [Line Items]
Principal	0.0		0.0
Senior Secured Credit Facilities \| Term Loan A Facility due 2023
Debt Instrument [Line Items]
Principal	597.1		636.9
Senior Secured Credit Facilities \| Term Loan B-1 Facility due 2025
Debt Instrument [Line Items]
Principal	$ 982.7		$ 991.2
Senior Notes \| 5.625% Notes due 2027
Debt Instrument [Line Items]
Interest rate	5.625%		5.625%		5.625%
Principal	$ 400.0		$ 400.0
Senior Notes \| 4.125% Notes due 2029
Debt Instrument [Line Items]
Interest rate	4.125%	4.125%
Principal	$ 400.0		0.0
Convertible Notes \| 2.75% Convertible Notes due 2026
Debt Instrument [Line Items]
Interest rate	2.75%			2.75%
Principal	$ 330.5		330.5
Other long-term obligations
Debt Instrument [Line Items]
Principal	$ 148.8		$ 73.0