Financing (Components Of Debt) (Details) € in Millions, SFr in Millions, ¥ in Billions	Jun. 28, 2019 USD ($)	Jun. 28, 2019 CHF (SFr)	Jun. 28, 2019 JPY (¥)	Jun. 28, 2019 EUR (€)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 CHF (SFr)	Dec. 31, 2018 JPY (¥)	Dec. 31, 2018 EUR (€)
Debt Instrument [Line Items]
Long-term debt	$ 10,298,100,000				$ 9,740,300,000
Less: currently payable	153,700,000				51,800,000
Long-term debt excluding currently payable	10,144,400,000				9,688,500,000
Other
Debt Instrument [Line Items]
Long-term debt	55,400,000				66,700,000
Commercial paper | U.S. dollar-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt	0				72,800,000
Commercial paper | Euro-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt	3,047,400,000			€ 2,700.0	2,377,500,000			€ 2,100.0
Long-term debt excluding currently payable	2,900,000,000
Senior notes | 1.0% senior unsecured notes due 2019
Debt Instrument [Line Items]
Long-term debt	$ 682,100,000				687,000,000.0
Interest rate of debt instrument	1.00%	1.00%	1.00%	1.00%
Debt instrument, face value | €				€ 600.0				600.0
Senior notes | 2.4% senior unsecured notes due 2020
Debt Instrument [Line Items]
Long-term debt	$ 499,000,000.0				498,500,000
Interest rate of debt instrument	2.40%	2.40%	2.40%	2.40%
Senior notes | 5.0% senior notes due 2020
Debt Instrument [Line Items]
Long-term debt	$ 382,800,000				386,700,000
Interest rate of debt instrument	5.00%	5.00%	5.00%	5.00%
Senior notes | 0.352% senior unsecured notes due 2021
Debt Instrument [Line Items]
Long-term debt	$ 277,800,000				273,200,000
Interest rate of debt instrument	0.352%	0.352%	0.352%	0.352%
Debt instrument, face value | ¥			¥ 30.0				¥ 30.0
Senior notes | 1.7% senior unsecured notes due 2022
Debt Instrument [Line Items]
Long-term debt	$ 906,400,000				913,200,000
Interest rate of debt instrument	1.70%	1.70%	1.70%	1.70%
Debt instrument, face value | €				€ 800.0				800.0
Senior notes | Floating rate senior unsecured notes due 2022
Debt Instrument [Line Items]
Long-term debt	$ 283,500,000				285,700,000
Debt instrument, face value | €				€ 250.0				250.0
Senior notes | 2.5% senior unsecured notes due 2025
Debt Instrument [Line Items]
Long-term debt	$ 905,600,000				912,600,000
Interest rate of debt instrument	2.50%	2.50%	2.50%	2.50%
Debt instrument, face value | €				€ 800.0				800.0
Senior notes | 3.35% senior unsecured notes due 2025
Debt Instrument [Line Items]
Long-term debt	$ 497,000,000.0				496,800,000
Interest rate of debt instrument	3.35%	3.35%	3.35%	3.35%
Senior notes | 0.3% senior unsecured notes due 2027
Debt Instrument [Line Items]
Long-term debt	$ 284,700,000				279,900,000
Interest rate of debt instrument	0.30%	0.30%	0.30%	0.30%
Debt instrument, face value | ¥			¥ 30.8				30.8
Senior notes | 1.2% senior unsecured notes due 2027
Debt Instrument [Line Items]
Long-term debt	$ 676,800,000				682,000,000.0
Interest rate of debt instrument	1.20%	1.20%	1.20%	1.20%
Debt instrument, face value | €				€ 600.0				€ 600.0
Senior notes | 0.65% senior unsecured notes due 2032
Debt Instrument [Line Items]
Long-term debt	$ 491,500,000				483,400,000
Interest rate of debt instrument	0.65%	0.65%	0.65%	0.65%
Debt instrument, face value | ¥			¥ 53.2				¥ 53.2
Senior notes | 4.375% senior unsecured notes due 2045
Debt Instrument [Line Items]
Long-term debt	$ 499,400,000				499,300,000
Interest rate of debt instrument	4.375%	4.375%	4.375%	4.375%
Convertible debt | Zero-coupon LYONs due 2021
Debt Instrument [Line Items]
Long-term debt	$ 35,300,000				56,200,000
Interest rate of debt instrument	0.00%	0.00%	0.00%	0.00%
Bonds | 0.5% senior unsecured bonds due 2023
Debt Instrument [Line Items]
Long-term debt	$ 554,100,000				550,700,000
Interest rate of debt instrument	0.50%	0.50%	0.50%	0.50%
Debt instrument, face value | SFr		SFr 540.0				SFr 540.0
Bonds | 1.125% senior unsecured bonds due 2028
Debt Instrument [Line Items]
Long-term debt	$ 219,300,000				$ 218,100,000
Interest rate of debt instrument	1.125%	1.125%	1.125%	1.125%
Debt instrument, face value | SFr		SFr 210.0				SFr 210.0