Fair Value Measurements Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 1,517						$ 1,517		$ 2,178
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	(54)			$ 25			(156)	$ 68
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	114						114
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax, Ending Balance	171						171		217
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	1,947						1,947		2,470
Gain (Loss) on Interest Rate Cash Flow Hedge Ineffectiveness				(1)			8	17
Gain (loss) recognized in earnings for terminated interest rate swaps		$ 11	$ 35
Unamortized gains on senior notes	66						66		45
Unamortized losses on senior notes	(1)						(1)		(2)
Unrealized gain on interest rate cash flow hedges, pretax, AOCI	10						10		2
reduction of interest expense, related to amortization of previously terminated interest rate contracts	3						10
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	13						13
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net							11
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net							2
Derivative Assets	290						290		444
Derivative Liabilities	30						30		36
Time Deposits, at Carrying Value	115						115		255
Cash	208						208		181
Cost-method Investments, Aggregate Carrying Amount	121						121		27
Intangible asset impairment charges	10	9		12			19	177
Asset Impairment Charges					$ 110	$ 55
Debt Instrument, Fair Value Disclosure	6,080						6,080		4,613
Loss on hedged debt obligation [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Expense, Other				1			(8)	(17)
Fair Value, Inputs, Level 1 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Derivative Assets, 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
Fair Value, Measurements, Recurring [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value	27						27		151
Foreign Currency Contract, Asset, Fair Value Disclosure	290						290		419
Interest Rate Derivative Assets, at Fair Value	0						0		25
Assets, Fair Value Disclosure	317						317		595
Foreign Currency Contracts, Liability, Fair Value Disclosure	30						30		36
Accrued Contingent Consideration	266						266		274
Liabilities, Fair Value Disclosure	296						296		310
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value	27						27		151
Foreign Currency Contract, Asset, Fair Value Disclosure	0						0		0
Assets, Fair Value Disclosure	27						27		151
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	290						290		419
Interest Rate Derivative Assets, at Fair Value	0						0		25
Assets, Fair Value Disclosure	290						290		444
Foreign Currency Contracts, Liability, Fair Value Disclosure	30						30		36
Accrued Contingent Consideration	0						0		0
Liabilities, Fair Value Disclosure	30						30		36
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	266						266		274
Liabilities, Fair Value Disclosure	266						266		274
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount		$ 450							450
Interest rate swaps terminated in Q1 2015 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Accrued Investment Income Receivable			$ 7
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	241						241		344
Derivative Instruments in Hedges, Liabilities, at Fair Value	1						1		1
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	152						152		178
Designated as Hedging Instrument [Member] | Other Long Term Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value	89						89		141
Designated as Hedging Instrument [Member] | Other current liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value	1						1		1
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	49						49		100
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		35
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	32			40			46	20
Net gain (loss) from foreign currency transaction exposures	(36)			(45)			(64)	(31)
Foreign Currency Transaction Gain (Loss), Realized	(4)			(5)			(18)	(11)
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	13			156			92	115
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	54			25			158	68
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	13			156			81	115
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	54			$ 25			156	$ 68
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	0						0		3
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	$ 0						$ 0		$ 22