Financing (Components Of Debt) (Details) € in Millions, SFr in Millions, $ in Millions, ¥ in Billions	Mar. 31, 2017 CHF (SFr)	Mar. 31, 2017 JPY (¥)	Mar. 31, 2017 USD ($)	Mar. 31, 2017 EUR (€)	Dec. 31, 2016 CHF (SFr)	Dec. 31, 2016 JPY (¥)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 EUR (€)
Debt Instrument [Line Items]
Long-term debt			$ 11,950.3				$ 12,269.0
Less: currently payable			2,221.0				2,594.8
Long-term debt excluding currently payable			9,729.3				9,674.2
Other
Debt Instrument [Line Items]
Long-term debt			165.5				124.6
Commercial paper
Debt Instrument [Line Items]
Long-term debt			4,000.0
Commercial paper | U.S. dollar-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt			2,268.4				2,733.5
Commercial paper | Euro-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt			3,167.9	€ 3,000.0			3,127.6	€ 3,000.0
Senior notes | Floating rate senior unsecured notes due 2017
Debt Instrument [Line Items]
Long-term debt			533.3				526.0
Debt Instrument, face value | €				€ 500.0				500.0
Senior notes | 1.65% senior unsecured notes due 2018
Debt Instrument [Line Items]
Long-term debt			$ 498.4				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			$ 637.5				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			$ 497.0				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			$ 402.5				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			$ 268.5				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			$ 848.0				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 | 2.5% senior unsecured notes due 2025
Debt Instrument [Line Items]
Long-term debt			$ 848.4				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			$ 495.9				495.8
Interest rate of debt instrument	3.35%	3.35%	3.35%	3.35%
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			$ 99.6				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			$ 541.0				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			$ 110.6				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			$ 68.5				$ 68.1
Interest rate of debt instrument	0.00%	0.00%	0.00%	0.00%