Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Oct. 02, 2020	Aug. 21, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 4,348.8		$ 3,749.2
Less: Debt discount	(79.2)		(102.7)
Less: Debt issuance costs	(30.4)		(34.0)
Net long-term debt, including current portion	4,239.2		3,612.5
Less: Current portion of long-term debt	(701.6)		(736.0)
Net long-term debt	3,537.6		2,876.5
Senior Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 765.0		$ 800.0
Debt instrument, interest rate (as a percent)	1.90%		3.30%
Term Loan B Facility
Debt Instrument [Line Items]
Long-term debt	$ 1,618.6		$ 1,630.9
Less: Debt discount	(9.4)		(10.5)
Less: Debt issuance costs	$ (21.9)		$ (24.3)
Debt instrument, interest rate (as a percent)	2.15%		3.80%
Other long-term debt
Debt Instrument [Line Items]
Long-term debt	$ 0.2		$ 53.3
3.875% Notes \| Notes Payable
Debt Instrument [Line Items]
Long-term debt	700.0		0.0
Less: Debt discount	(6.8)		0.0
Less: Debt issuance costs	$ (2.3)		0.0
Debt instrument, interest rate (as a percent)	3.875%	3.875%
1.00% Notes \| Convertible Debt
Debt Instrument [Line Items]
Long-term debt	$ 690.0		690.0
Less: Debt discount	(4.0)		(20.4)
Less: Debt issuance costs	$ (0.6)		(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	(59.0)		(71.8)
Less: Debt issuance costs	$ (5.6)		$ (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%

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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Amount of long-term debt and lease obligation, including portion classified as current.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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