Financial Instruments, Derivatives and Hedging Activities (Details 3) (Derivatives in Cash Flow Hedging Relationships, USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Gains or losses on derivatives
Amount of Gains Recognized in OCI on Derivatives	$ 53	$ 18	$ 8	$ 82
Amount of Gains (Losses) Reclassified from AOCI into Income	(15)	45	(22)	77
Commodity and foreign currency contracts
Gains or losses on derivatives
Amount of Gains Recognized in OCI on Derivatives	53	18	8	82
Commodity and foreign currency contracts | Cost of Sales
Gains or losses on derivatives
Amount of Gains (Losses) Reclassified from AOCI into Income	(14)	46	(20)	79
Interest rate contracts | Financing Costs, net
Gains or losses on derivatives
Amount of Gains (Losses) Reclassified from AOCI into Income	(1)	(1)	(2)	(2)
Treasury Lock agreements (T-Locks)
Gains or losses on derivatives
Losses expected to be reclassified into earnings during next 12 months on Treasury Lock Agreements	2		2
Foreign currency forward contracts
Gains or losses on derivatives
Gains expected to be reclassified into earnings during next 12 months on currency hedge contracts	1		1
Commodity contracts
Gains or losses on derivatives
Losses expected to be reclassified into earnings during next 12 months on commodity hedging contracts	$ 1		$ 1