Derivative Financial Instruments and Risk Management (Details 2) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Designated Derivatives
Derivatives Fair Value
Asset (Liability) Fair Value	$ 217	$ 232
Designated Derivatives | Foreign exchange contracts | Receivables-trade and other | Machinery and Power Systems
Derivatives Fair Value
Asset Fair Value	48	54
Designated Derivatives | Foreign exchange contracts | Long-term receivables-trade and other | Machinery and Power Systems
Derivatives Fair Value
Asset Fair Value	1	19
Designated Derivatives | Foreign exchange contracts | Accrued Liabilities | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	(63)	(73)
Designated Derivatives | Foreign exchange contracts | Other Liabilities | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	(10)	(10)
Designated Derivatives | Interest rate contracts | Receivables-trade and other | Financial Products
Derivatives Fair Value
Asset Fair Value	28	15
Designated Derivatives | Interest rate contracts | Long-term receivables-trade and other | Financial Products
Derivatives Fair Value
Asset Fair Value	224	233
Designated Derivatives | Interest rate contracts | Accrued Liabilities | Financial Products
Derivatives Fair Value
Liability Fair Value	(11)	(6)
Undesignated Derivatives
Derivatives Fair Value
Asset (Liability) Fair Value	(61)	(87)
Undesignated Derivatives | Foreign exchange contracts | Receivables-trade and other | Machinery and Power Systems
Derivatives Fair Value
Asset Fair Value	14	27
Undesignated Derivatives | Foreign exchange contracts | Receivables-trade and other | Financial Products
Derivatives Fair Value
Asset Fair Value	9	7
Undesignated Derivatives | Foreign exchange contracts | Accrued Liabilities | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	(58)	(12)
Undesignated Derivatives | Foreign exchange contracts | Accrued Liabilities | Financial Products
Derivatives Fair Value
Liability Fair Value	(7)	(16)
Undesignated Derivatives | Foreign exchange contracts | Other Liabilities | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	(18)	(85)
Undesignated Derivatives | Interest rate contracts | Accrued Liabilities | Financial Products
Derivatives Fair Value
Liability Fair Value	(2)	(1)
Undesignated Derivatives | Commodity contracts | Receivables-trade and other | Machinery and Power Systems
Derivatives Fair Value
Asset Fair Value	2	2
Undesignated Derivatives | Commodity contracts | Accrued Liabilities | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	$ (1)	$ (9)