Financing (Components Of Debt) (Details) € in Millions, SFr in Millions, $ in Millions, ¥ in Billions	Sep. 30, 2016 CHF (SFr)	Sep. 30, 2016 JPY (¥)	Sep. 30, 2016 USD ($)	Sep. 30, 2016 EUR (€)	Jun. 30, 2016 USD ($)	Feb. 28, 2016 JPY (¥)	Dec. 31, 2015 CHF (SFr)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)
Debt Instrument [Line Items]
Long-term debt			$ 8,312.2					$ 12,870.4
Less: currently payable			809.1					845.2
Long-term debt excluding currently payable			7,503.1					12,025.2
Other
Debt Instrument [Line Items]
Long-term debt			137.2					227.5
Commercial paper | Euro-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt			1,372.6	€ 1,200.0				3,096.9	€ 2,800.0
Commercial paper | U.S. dollar-denominated commercial paper
Debt Instrument [Line Items]
Long-term debt			123.8					920.0
Senior notes | 2.3% senior unsecured notes due 2016
Debt Instrument [Line Items]
Long-term debt			$ 0.0					500.0
Interest rate of debt instrument	2.30%	2.30%	2.30%	2.30%	2.30%
Debt Instrument, face value					$ 500.0
Senior notes | Floating rate senior unsecured notes due 2017
Debt Instrument [Line Items]
Long-term debt			$ 561.2					544.8
Debt Instrument, face value | €				€ 500.0					500.0
Senior notes | 1.65% senior unsecured notes due 2018
Debt Instrument [Line Items]
Long-term debt			$ 497.9					497.1
Interest rate of debt instrument	1.65%	1.65%	1.65%	1.65%
Senior notes | 5.625% senior unsecured notes due 2018
Debt Instrument [Line Items]
Long-term debt			$ 0.0					500.0
Interest rate of debt instrument	5.625%	5.625%	5.625%	5.625%
Senior notes | 1.0% senior unsecured notes due 2019
Debt Instrument [Line Items]
Long-term debt			$ 670.9					651.0
Interest rate of debt instrument	1.00%	1.00%	1.00%	1.00%
Debt Instrument, face value | €				€ 600.0					600.0
Senior notes | 5.4% senior unsecured notes due 2019
Debt Instrument [Line Items]
Long-term debt			$ 0.0					750.0
Interest rate of debt instrument	5.40%	5.40%	5.40%	5.40%
Senior notes | 2.4% senior unsecured notes due 2020
Debt Instrument [Line Items]
Long-term debt			$ 496.6					495.9
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			$ 406.6					410.7
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			$ 294.8					0.0
Interest rate of debt instrument	0.352%	0.352%	0.352%	0.352%		0.352%
Debt Instrument, face value | ¥		¥ 30.0				¥ 30.0
Senior notes | 3.9% senior unsecured notes due 2021
Debt Instrument [Line Items]
Long-term debt			$ 0.0					600.0
Interest rate of debt instrument	3.90%	3.90%	3.90%	3.90%
Senior notes | 1.7% senior unsecured notes due 2022
Debt Instrument [Line Items]
Long-term debt			$ 892.8					866.8
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			$ 893.4					867.9
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			$ 495.7					495.3
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 | 4.0% senior unsecured bonds due 2016
Debt Instrument [Line Items]
Long-term debt			$ 126.5					122.6
Interest rate of debt instrument	4.00%	4.00%	4.00%	4.00%
Debt Instrument, face value | SFr	SFr 120.0						SFr 120.0
Bonds | 0.0% senior unsecured bonds due 2017
Debt Instrument [Line Items]
Long-term debt			$ 102.7					99.7
Interest rate of debt instrument	0.00%	0.00%	0.00%	0.00%
Debt Instrument, face value | SFr	SFr 100.0						100.0
Bonds | 0.5% senior unsecured bonds due 2023
Debt Instrument [Line Items]
Long-term debt			$ 558.0					541.6
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			$ 114.0					110.7
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			$ 68.2					$ 72.6
Interest rate of debt instrument	0.00%	0.00%	0.00%	0.00%