Derivative Financial Instruments and Risk Management (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Designated Derivatives | Fair Value Hedges
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives	$ (9)	$ 7	$ (87)	$ 4
Gains (Losses) on Borrowings	12	(3)	92	7
Designated Derivatives | Fair Value Hedges | Interest rate contracts | Financial Products | Other Income (Expense)
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives	(9)	7	(87)	4
Gains (Losses) on Borrowings	12	(3)	92	7
Designated Derivatives | Cash Flow Hedges
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	41	(12)	4	(56)
Amount of Gains (Losses) Reclassified from AOCI to Earnings	(14)	(14)	(66)	(16)
Recognized in Earnings (Ineffective Portion)	0	0	0	(1)
Designated Derivatives | Cash Flow Hedges | Foreign exchange contracts | Machinery and Power Systems
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	44	(6)	4	(48)
Designated Derivatives | Cash Flow Hedges | Foreign exchange contracts | Machinery and Power Systems | Other Income (Expense)
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Reclassified from AOCI to Earnings	(12)	(14)	(60)	(13)
Recognized in Earnings (Ineffective Portion)	0	0	0	0
Gains (Losses) reclassified from AOCI to earnings for derivatives dedesignated as related transactions are no longer probable to occur			(3)
Designated Derivatives | Cash Flow Hedges | Interest rate contracts | Machinery and Power Systems
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	0	0	0
Designated Derivatives | Cash Flow Hedges | Interest rate contracts | Machinery and Power Systems | Other Income (Expense)
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Reclassified from AOCI to Earnings	(1)	1	(2)
Recognized in Earnings (Ineffective Portion)	0	0	0
Designated Derivatives | Cash Flow Hedges | Interest rate contracts | Financial Products
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Recognized in AOCI (Effective Portion)	(3)	(6)	0	(8)
Designated Derivatives | Cash Flow Hedges | Interest rate contracts | Financial Products | Interest Expense of Financial Products
Derivative Instruments, Gain (Loss)
Amount of Gains (Losses) Reclassified from AOCI to Earnings	(1)	(1)	(4)	(3)
Recognized in Earnings (Ineffective Portion)	0	0	0	(1)
Undesignated Derivatives
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	19	(1)	8	31
Undesignated Derivatives | Foreign exchange contracts | Machinery and Power Systems | Other Income (Expense)
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	15	(9)	7	21
Undesignated Derivatives | Foreign exchange contracts | Financial Products | Other Income (Expense)
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	3	5	4	7
Undesignated Derivatives | Interest rate contracts | Financial Products | Other Income (Expense)
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	(1)	0	(1)	0
Undesignated Derivatives | Commodity contracts | Machinery and Power Systems | Other Income (Expense)
Derivative Instruments, Gain (Loss)
Gains (Losses) on Derivatives Not Designated as Hedging Instruments	$ 2	$ 3	$ (2)	$ 3