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Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Jul. 03, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 4,853.2	$ 3,749.2
Less: Debt discount	(82.7)	(102.7)
Less: Debt issuance costs	(30.1)	(34.0)
Net long-term debt, including current portion	4,740.4	3,612.5
Less: Current portion of long-term debt	(695.6)	(736.0)
Net long-term debt	4,044.8	2,876.5
Senior Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 1,965.0	$ 800.0
Debt instrument, interest rate (as a percent)	1.68%	3.30%
Term Loan B Facility
Debt Instrument [Line Items]
Long-term debt	$ 1,622.7	$ 1,630.9
Less: Debt discount	(9.8)	(10.5)
Less: Debt issuance costs	$ (22.7)	$ (24.3)
Debt instrument, interest rate (as a percent)	2.18%	3.80%
Other long-term debt
Debt Instrument [Line Items]
Long-term debt	$ 0.5	$ 53.3
1.00% Notes | Convertible Debt
Debt Instrument [Line Items]
Long-term debt	690.0	690.0
Less: Debt discount	(9.6)	(20.4)
Less: Debt issuance costs	$ (1.3)	(2.8)
Debt instrument, interest rate (as a percent)	1.00%
1.625% Notes | Convertible Debt
Debt Instrument [Line Items]
Long-term debt	$ 575.0	575.0
Less: Debt discount	(63.3)	(71.8)
Less: Debt issuance costs	$ (6.1)	$ (6.9)
Debt instrument, interest rate (as a percent)	1.625%
Minimum | Other long-term debt
Debt Instrument [Line Items]
Debt instrument, interest rate (as a percent)	1.00%
Maximum | Other long-term debt
Debt Instrument [Line Items]
Debt instrument, interest rate (as a percent)	1.48%

X

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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