Derivative Financial Instruments and Risk Management (Details 3) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Derivative Instruments Gain (Loss)
Gains (Losses) on Derivatives	$ 70	$ 63	$ 58	$ 204
Gains (Losses) on Borrowings	(77)	(61)	(64)	(195)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	58	35	39	(44)
Amount of Gains (Losses) Reclassified from AOCI (Effective Portion)	39	4	35	(48)
Recognized in Earnings (Ineffective Portion)	(2)	(1)	(1)
Gains or (Losses) on derivatives not designated as hedging instruments	(34)	3	(136)	17
Machinery and Power Systems | Other Income (Expense)
Derivative Instruments Gain (Loss)
Gains (Losses) on Derivatives			(1)
Gains (Losses) on Borrowings			1
Foreign exchange contracts, Amount of Gains (Losses) Reclassified from AOCI (Effective Portion)	43	15	52	(4)
Foreign exchange contracts, Recognized in Earnings (Ineffective Portion)		1		1
Interest rate contracts, Amount of Gains (Losses) Reclassified from AOCI (Effective Portion)	(1)	(1)	(2)	(2)
Foreign exchange contracts, Gains or (Losses) on derivatives not designated as hedging instruments	(1)	(21)	46	(14)
Interest rate contracts, Gains or (Losses) on derivatives not designated as hedging instruments			(149)	(2)
Commodity contracts, Gains or (Losses) on derivatives not designated as hedging instruments	(23)	10	(21)	7
Financial Products | Other Income (Expense)
Derivative Instruments Gain (Loss)
Gains (Losses) on Derivatives	70	63	59	204
Gains (Losses) on Borrowings	(77)	(61)	(65)	(195)
Foreign exchange contracts, Gains or (Losses) on derivatives not designated as hedging instruments	(10)	12	(12)	23
Interest rate contracts, Gains or (Losses) on derivatives not designated as hedging instruments		2		3
Financial Products | Interest expense of Financial Products
Derivative Instruments Gain (Loss)
Interest rate contracts, Amount of Gains (Losses) Reclassified from AOCI (Effective Portion)	(3)	(10)	(15)	(42)
Interest rate contracts, Recognized in Earnings (Ineffective Portion)	(2)	(2)	(1)	(1)
Machinery and Power Systems
Derivative Instruments Gain (Loss)
Foreign exchange contracts, Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	62	37	44	(36)
Financial Products
Derivative Instruments Gain (Loss)
Interest rate contracts, Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	$ (4)	$ (2)	$ (5)	$ (8)