Derivatives (Details 5) (USD $) In Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	$ 46	$ 46	$ 77
Fair Value of Derivative Instruments, Liabilities	115	115	87
Year-on-year currency effects, including hedging impact	33	80
Year-on-year derivative and other transaction gains and (losses) impact	(42)	(26)
Foreign currency forward/option contracts | Derivatives designated as hedging instruments | Other current assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	12	12	26
Foreign currency forward/option contracts | Derivatives designated as hedging instruments | Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	63	63	48
Commodity price swap contracts | Derivatives designated as hedging instruments | Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	1	1	5
Derivatives designated as hedging instruments
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	41	41	65
Fair Value of Derivative Instruments, Liabilities	64	64	53
Derivatives designated as hedging instruments | Interest rate swap contracts | Other assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	29	29	39
Foreign currency forward/option contracts | Derivatives not designated as hedging instruments | Other current assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	5	5	12
Foreign currency forward/option contracts | Derivatives not designated as hedging instruments | Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	51	51	34
Derivatives not designated as hedging instruments
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	5	5	12
Fair Value of Derivative Instruments, Liabilities	$ 51	$ 51	$ 34