Derivatives (Details) (USD $)			3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Foreign currency forward/option contracts Cash flow hedge	Sep. 30, 2010 Foreign currency forward/option contracts Cash flow hedge	Sep. 30, 2011 Foreign currency forward/option contracts Cash flow hedge	Sep. 30, 2010 Foreign currency forward/option contracts Cash flow hedge	Sep. 30, 2011 Foreign currency forward/option contracts Cash flow hedge Cost of Sales	Sep. 30, 2010 Foreign currency forward/option contracts Cash flow hedge Cost of Sales	Sep. 30, 2011 Foreign currency forward/option contracts Cash flow hedge Cost of Sales	Sep. 30, 2010 Foreign currency forward/option contracts Cash flow hedge Cost of Sales	Sep. 30, 2011 Foreign currency forward contracts Cash flow hedge	Sep. 30, 2010 Foreign currency forward contracts Cash flow hedge	Sep. 30, 2011 Foreign currency forward contracts Cash flow hedge	Sep. 30, 2010 Foreign currency forward contracts Cash flow hedge	Sep. 30, 2011 Foreign currency forward contracts Cash flow hedge Interest expense	Sep. 30, 2010 Foreign currency forward contracts Cash flow hedge Interest expense	Sep. 30, 2011 Foreign currency forward contracts Cash flow hedge Interest expense	Sep. 30, 2010 Foreign currency forward contracts Cash flow hedge Interest expense	Sep. 30, 2011 Commodity price swap contracts Cash flow hedge	Sep. 30, 2010 Commodity price swap contracts Cash flow hedge	Sep. 30, 2011 Commodity price swap contracts Cash flow hedge	Sep. 30, 2010 Commodity price swap contracts Cash flow hedge	Sep. 30, 2010 Commodity price swap contracts Cash flow hedge Cost of Sales	Sep. 30, 2011 Commodity price swap contracts Cash flow hedge Cost of Sales	Sep. 30, 2010 Commodity price swap contracts Cash flow hedge Cost of Sales	Sep. 30, 2011 Forecasted debt issuance contracts Cash flow hedge	Sep. 30, 2011 Interest rate swap contracts Cash flow hedge	Sep. 30, 2011 Interest rate swap contracts Cash flow hedge	Sep. 30, 2011 Cash flow hedge	Sep. 30, 2010 Cash flow hedge	Sep. 30, 2011 Cash flow hedge	Sep. 30, 2010 Cash flow hedge
Derivatives gain (loss)
Maximum length of time hedged (in months)					12M																12M
Maximum length of time hedged (in years)																										5Y
Dollar equivalent gross notional amount, foreign exchange forward and option contracts designated as cash flow hedges			$ 4,200,000,000		$ 4,200,000,000
Dollar equivalent gross notional amount, natural gas commodity price swaps designated as cash flow hedges																			31,000,000		31,000,000
Dollar equivalent gross notional amount, forecasted debt issuance contracts designated as cash flow hedges																										400,000,000
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Effective portion of Derivative			49,000,000	(76,000,000)	(12,000,000)	(25,000,000)					(56,000,000)	108,000,000	(55,000,000)	41,000,000					2,000,000	(6,000,000)		(13,000,000)					(7,000,000)	(7,000,000)	(12,000,000)	26,000,000	(74,000,000)	3,000,000
Pretax Gain (Loss) Recognized in Income on Effective Portion of Derivative as a Result of Reclassification from Accumulated Other Comprehensive Income							(41,000,000)	5,000,000	(75,000,000)	(48,000,000)					(56,000,000)	108,000,000	(54,000,000)	41,000,000					(3,000,000)	(4,000,000)	(6,000,000)				(97,000,000)	110,000,000	(133,000,000)	(13,000,000)
Accumulated other comprehensive income (loss), unrealized gain (loss) on cash flow hedges	$ 5,000,000	$ (32,000,000)																									$ (4,000,000)	$ (4,000,000)	$ 5,000,000		$ 5,000,000
The time period estimated for the anticipated transfer of gains (losses), net from accumulated other comprehensive income into earnings (in months)																												5Y			12M