Fair Value Measurements Fair Value of Derivatives by Statement of Operations Location (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Intangible asset impairment charges	$ 53		$ 129	$ 53	$ 129
Goodwill impairment charges	0	423	3,602	423	3,602
Unamortized losses on senior notes	3			3		3
Unrealized gain on interest rate cash flow hedges, pretax, AOCI	4			4		4
reduction of interest expense, related to amortization of previously terminated interest rate contracts	2			5
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives	2,750			2,750		2,469
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	(6)		(10)	(1)	(26)
Gain (Loss) in AOCI for effective portion of cash flow hedges	150			150		31
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	64			64
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	2,271			2,271		1,942
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	10			10
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	6		(10)	1	(26)
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	76		10	190	46
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Cost of products sold [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	6		(10)	1	(26)
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	76		10	190	46
Not Designated as Hedging Instrument [Member] | Other, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) from foreign currency transaction exposures	(29)		(19)	(56)	(25)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	29		12	54	15
Foreign Currency Transaction Gain (Loss), Realized	0		(7)	(2)	(10)
Fair Value, Measurements, Recurring [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value	102			102		39
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Money Market Funds, at Carrying Value	$ 102			$ 102		$ 39