Financing (Components Of Debt) (Details) € in Millions, SFr in Millions, $ in Millions, ¥ in Billions	Sep. 29, 2017 CHF (SFr)	Sep. 29, 2017 JPY (¥)	Sep. 29, 2017 USD ($)	Sep. 29, 2017 EUR (€)	Jun. 30, 2017 EUR (€)	May 11, 2017 JPY (¥)	Dec. 31, 2016 CHF (SFr)	Dec. 31, 2016 JPY (¥)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 EUR (€)
Debt Instrument [Line Items]
Long-term debt			$ 10,909.0						$ 12,269.0
Less: currently payable			182.2						2,594.8
Long-term debt excluding currently payable			10,726.8						9,674.2
Other
Debt Instrument [Line Items]
Long-term debt			196.7						124.6
Commercial paper
Debt Instrument [Line Items]
Long-term debt			2,900.0
Commercial paper | U.S. dollar-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt			190.0						2,733.5
Commercial paper | Euro-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt			2,692.1	€ 2,300.0					3,127.6	€ 3,000.0
Senior notes | Floating rate senior unsecured notes due 2017
Debt Instrument [Line Items]
Long-term debt			0.0						526.0
Debt instrument, face value | €				€ 0.0						500.0
Senior notes | 1.65% senior unsecured notes due 2018
Debt Instrument [Line Items]
Long-term debt			$ 499.0						498.1
Interest rate of debt instrument	1.65%	1.65%	1.65%	1.65%
Senior notes | 1.0% senior unsecured notes due 2019
Debt Instrument [Line Items]
Long-term debt			$ 706.9						628.6
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			$ 497.5						496.8
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			$ 398.5						402.6
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			$ 265.7						255.6
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			$ 940.5						836.5
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			$ 294.4						0.0
Debt instrument, face value | €				€ 250.0	€ 250.0
Senior notes | 2.5% senior unsecured notes due 2025
Debt Instrument [Line Items]
Long-term debt			$ 940.5						836.8
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			$ 496.2						495.8
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			$ 272.5						0.0
Interest rate of debt instrument	0.30%	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			$ 702.8						0.0
Interest rate of debt instrument	1.20%	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			$ 470.6						0.0
Interest rate of debt instrument	0.65%	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			$ 499.3						499.3
Interest rate of debt instrument	4.375%	4.375%	4.375%	4.375%
Bonds | 0.0% senior unsecured bonds due 2017
Debt Instrument [Line Items]
Long-term debt			$ 103.1						98.0
Interest rate of debt instrument	0.00%	0.00%	0.00%	0.00%
Debt instrument, face value | SFr	SFr 100.0						SFr 100.0
Bonds | 0.5% senior unsecured bonds due 2023
Debt Instrument [Line Items]
Long-term debt			$ 559.6						532.3
Interest rate of debt instrument	0.50%	0.50%	0.50%	0.50%
Debt instrument, face value | SFr	SFr 540.0						540.0
Bonds | 1.125% senior unsecured bonds due 2028
Debt Instrument [Line Items]
Long-term debt			$ 114.4						108.8
Interest rate of debt instrument	1.125%	1.125%	1.125%	1.125%
Debt instrument, face value | SFr	SFr 110.0						SFr 110.0
Convertible debt | Zero-coupon LYONs due 2021
Debt Instrument [Line Items]
Long-term debt			$ 68.7						$ 68.1
Interest rate of debt instrument	0.00%	0.00%	0.00%	0.00%