Objectives and Strategies for Using Derivatives (Effect on the Income Statement) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash Flow Hedging [Member]
Gain or (Loss) Recognized in OCI	$ 20	$ 81	$ 37
Gain or (Loss) Reclassified from AOCI into Income	0	39	17
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Gain or (Loss) Recognized in OCI	14	81	21
Gain or (Loss) Reclassified from AOCI into Income	2	(3)	(3)
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Other Income and (Expense), Net [Member]
Gain or (Loss) Recognized in OCI	0	(8)	0
Gain or (Loss) Reclassified from AOCI into Income	0	(8)	0
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Cost of Products Sold [Member]
Gain or (Loss) Recognized in OCI	1	(7)	0
Gain or (Loss) Reclassified from AOCI into Income	(19)	40	7
Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of Products Sold [Member]
Gain or (Loss) Recognized in OCI	5	15	16
Gain or (Loss) Reclassified from AOCI into Income	17	10	13
Net Investment Hedging [Member] | Foreign Exchange Contract [Member]
Gain or (Loss) Recognized in OCI	(1)	(6)	6
Gain or (Loss) Reclassified from AOCI into Income	$ 0	$ 0	$ 0