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Financing and Capital - Components of Debt (Details) - USD ($) $ in Millions	Jul. 02, 2021	Dec. 31, 2020	Jun. 26, 2020	Feb. 22, 2019
Debt Instrument [Line Items]
Long-term debt	$ 2,576.4	$ 4,230.1
Less: current portion of long-term debt	1,134.6	1,399.8
Long-term debt, net of current maturities	1,441.8	2,830.3
Term Loan due May 2021 \| Line of credit
Debt Instrument [Line Items]
Long-term debt	0.0	1,000.0
Term Loan due March 2021 \| Line of credit
Debt Instrument [Line Items]
Long-term debt	0.0	399.8
Senior Notes \| 3.15% senior unsecured notes due 2026
Debt Instrument [Line Items]
Long-term debt	$ 894.6	894.1
Interest rate, stated percentage	3.15%
Senior Notes \| 4.30% senior unsecured notes due 2046
Debt Instrument [Line Items]
Long-term debt	$ 547.2	547.2
Interest rate, stated percentage	4.30%
Convertible Debt \| 0.875% senior convertible notes due 2022
Debt Instrument [Line Items]
Long-term debt	$ 1,134.6	$ 1,389.0
Interest rate, stated percentage	0.875%		0.875%	0.875%