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

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

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Financing and Capital - Components of Debt (Details) - USD ($) $ in Millions	Sep. 25, 2020	Dec. 31, 2019	Mar. 29, 2019	Feb. 22, 2019
Debt Instrument [Line Items]
Long-term debt	$ 5,698.4	$ 6,328.4
Current portion of long-term debt	999.2	1,500.0
Long-term debt, net of current maturities	4,699.2	4,828.4
Other
Debt Instrument [Line Items]
Long-term debt	0.0	17.3
Commercial Paper \| U.S. dollar-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt	0.0	884.4
Commercial Paper \| Euro-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt	0.0	264.1
Senior Notes \| 2.35% senior unsecured notes due 2021
Debt Instrument [Line Items]
Long-term debt	$ 749.2	748.2
Interest rate, stated percentage	2.35%
Senior Notes \| 3.15% senior unsecured notes due 2026
Debt Instrument [Line Items]
Long-term debt	$ 893.8	893.0
Interest rate, stated percentage	3.15%
Senior Notes \| 4.30% senior unsecured notes due 2046
Debt Instrument [Line Items]
Long-term debt	$ 547.1	547.0
Interest rate, stated percentage	4.30%
Convertible Debt \| 0.875% senior convertible notes due 2022
Debt Instrument [Line Items]
Long-term debt	$ 1,378.5	1,347.3
Interest rate, stated percentage	0.875%		0.875%	0.875%
Line of credit \| Delayed-draw term loan due 2020
Debt Instrument [Line Items]
Long-term debt	$ 1,000.0	1,000.0
Line of credit \| Term Loan due 2020
Debt Instrument [Line Items]
Long-term debt	250.0	500.0
Line of credit \| Term Loan due 2021
Debt Instrument [Line Items]
Long-term debt	749.1	0.0
Line of credit \| Yen variable interest rate term loan due 2022
Debt Instrument [Line Items]
Long-term debt	$ 130.7	$ 127.1