Fair Value Measurements Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 2,442				$ 2,442		$ 2,564
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	25			15	68	15
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	99				99
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax, Ending Balance	169				169		139
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	2,479				2,479		1,952
Interest Rate Derivatives, at Fair Value, Net	450				450
Gain (Loss) on Interest Rate Cash Flow Hedge Ineffectiveness	(1)				17
Unamortized gains on senior notes	47				47		54
Unamortized losses on senior notes	2				2		2
Unrealized gain on interest rate cash flow hedges, pretax, AOCI	2				2		3
reduction of interest expense, related to amortization of previously terminated interest rate contracts	2				7
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	9				9
Derivative Assets	342				342		265
Derivative Liabilities	33				33		63
Accrued Contingent Consideration	(363)				(363)		501
Time Deposits, at Carrying Value	48				48		31
Cash	169				169		148
Cost-method Investments, Aggregate Carrying Amount	25				25		20
Asset Impairment Charges	2	110	55	4	177	476
Debt Instrument, Fair Value Disclosure	4,657				4,657		4,602
Loss on hedged debt obligation [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Expense, Other	1				(17)
Fair Value, Inputs, Level 1 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Derivative Assets, at Fair Value	0				0		0
Interest Rate Derivative Liabilities, at Fair Value	0				0		0
Fair Value, Inputs, Level 2 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value	0				0
Fair Value, Inputs, Level 3 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Derivative Assets, at Fair Value	0				0		0
Interest Rate Derivative Liabilities, at Fair Value	0				0		0
Fair Value, Measurements, Recurring [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value	29				29		38
Foreign Currency Contract, Asset, Fair Value Disclosure	325				325		264
Interest Rate Derivative Assets, at Fair Value	17				17		1
Assets, Fair Value Disclosure	371				371		303
Foreign Currency Contracts, Liability, Fair Value Disclosure	33				33		55
Accrued Contingent Consideration	363				363		501
Interest Rate Derivative Liabilities, at Fair Value	0				0		8
Liabilities, Fair Value Disclosure	396				396		564
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value	29				29		38
Foreign Currency Contract, Asset, Fair Value Disclosure	0				0		0
Assets, Fair Value Disclosure	29				29		38
Foreign Currency Contracts, Liability, Fair Value Disclosure	0				0		0
Accrued Contingent Consideration	0				0		0
Liabilities, Fair Value Disclosure	0				0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value							0
Foreign Currency Contract, Asset, Fair Value Disclosure	325				325		264
Interest Rate Derivative Assets, at Fair Value	17				17		1
Assets, Fair Value Disclosure	342				342		265
Foreign Currency Contracts, Liability, Fair Value Disclosure	33				33		55
Accrued Contingent Consideration	0				0		0
Interest Rate Derivative Liabilities, at Fair Value	0				0		8
Liabilities, Fair Value Disclosure	33				33		63
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value	0				0		0
Foreign Currency Contract, Asset, Fair Value Disclosure	0				0		0
Assets, Fair Value Disclosure	0				0		0
Foreign Currency Contracts, Liability, Fair Value Disclosure	0				0		0
Accrued Contingent Consideration	363				363		501
Liabilities, Fair Value Disclosure	363				363		501
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount							450
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	272				272		238
Derivative Instruments in Hedges, Liabilities, at Fair Value	4				4		40
Designated as Hedging Instrument [Member] | Prepaid And Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	143				143		117
Designated as Hedging Instrument [Member] | Other Long Term Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	112				112		120
Designated as Hedging Instrument [Member] | Other current liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value	2				2		13
Designated as Hedging Instrument [Member] | Other Long Term Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value	2				2		19
Not Designated as Hedging Instrument [Member] | Prepaid And Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	70				70		27
Not Designated as Hedging Instrument [Member] | Other current liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	29				29		23
Not Designated as Hedging Instrument [Member] | Other, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	40			12	20	66
Net gain (loss) from foreign currency transaction exposures	(45)			(15)	(31)	(72)
Foreign Currency Transaction Gain (Loss), Realized	(5)			(3)	(11)	(6)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	156			(45)	115	144
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	25			15	68	15
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Cost of products sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	156			(45)	115	144
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	25			15	68	15
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Prepaid And Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	7				7		1
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Long Term Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	10				10		0
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Long Term Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value	$ 0				$ 0		$ 8