Fair Value Measurements Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 2,642			$ 2,642		$ 2,564
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	22		(6)	43	(1)
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	60			60
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax, Ending Balance	85			85		139
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	2,114			2,114		1,952
Interest Rate Derivatives, at Fair Value, Net	450			450
Gain (Loss) on Interest Rate Cash Flow Hedge Ineffectiveness	8			18
Unamortized gains on senior notes	49			49		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			4
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	9			9
Derivative Assets	180			180		265
Derivative Liabilities	56			56		63
Accrued Contingent Consideration	(372)			(372)		501
Time Deposits, at Carrying Value	126			126		31
Cash	203			203		148
Cost-method Investments, Aggregate Carrying Amount	26			26		20
Asset Impairment Charges	110	55	53	165	476
Debt Instrument, Fair Value Disclosure	4,704			4,704		4,602
Loss on hedged debt obligation [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Expense, Other	8			18
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	28			28		38
Foreign Currency Contract, Asset, Fair Value Disclosure	167			167		264
Interest Rate Derivative Assets, at Fair Value	13			13		1
Assets, Fair Value Disclosure	208			208		303
Foreign Currency Contracts, Liability, Fair Value Disclosure	56			56		55
Accrued Contingent Consideration	372			372		501
Interest Rate Derivative Liabilities, at Fair Value	0			0		8
Liabilities, Fair Value Disclosure	428			428		564
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value	28			28		38
Foreign Currency Contract, Asset, Fair Value Disclosure	0			0		0
Assets, Fair Value Disclosure	28			28		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	167			167		264
Interest Rate Derivative Assets, at Fair Value	13			13		1
Assets, Fair Value Disclosure	180			180		265
Foreign Currency Contracts, Liability, Fair Value Disclosure	56			56		55
Accrued Contingent Consideration	0			0		0
Interest Rate Derivative Liabilities, at Fair Value	0			0		8
Liabilities, Fair Value Disclosure	56			56		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	372			372		501
Liabilities, Fair Value Disclosure	372			372		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	165			165		238
Derivative Instruments in Hedges, Liabilities, at Fair Value	32			32		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	94			94		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	58			58		120
Designated as Hedging Instrument [Member] | Other current liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value	14			14		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	18			18		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	15			15		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	24			24		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	(17)		29	(20)	54
Net gain (loss) from foreign currency transaction exposures	14		(29)	14	(56)
Foreign Currency Transaction Gain (Loss), Realized	(3)		0	(6)	(2)
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	(20)		76	(40)	190
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	22		6	43	1
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	(20)		76	(40)	190
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	22		6	43	1
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	3			3		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