Financial Instruments, Derivatives and Hedging Activities (Details 3) (Derivatives in Cash Flow Hedging Relationships, USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Gains or losses on derivatives
Amount of Gains (Losses) Recognized in OCI on Derivatives	$ 101	$ (50)	$ 109	$ 32
Amount of Gains (Losses) Reclassified from AOCI into Income	5	57	(17)	134
Commodity and foreign currency contracts
Gains or losses on derivatives
Amount of Gains (Losses) Recognized in OCI on Derivatives	101	(50)	109	32
Commodity and foreign currency contracts | Cost of Sales
Gains or losses on derivatives
Amount of Gains (Losses) Reclassified from AOCI into Income	6	58	(15)	136
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
Gains expected to be reclassified into earnings during next 12 months on commodity hedging contracts	$ 59		$ 59