Derivative Financial Instruments and Risk Management (Details 2) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Designated derivatives
Derivatives Fair Value
Asset (Liability) Fair Value	$ 192	$ 232
Designated derivatives | Foreign exchange contracts | Receivables - trade and other | Machinery and Power Systems
Derivatives Fair Value
Asset Fair Value	62	54
Designated derivatives | Foreign exchange contracts | Long-term receivables - trade and other | Machinery and Power Systems
Derivatives Fair Value
Asset Fair Value	2	19
Designated derivatives | Foreign exchange contracts | Accrued expenses | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	(91)	(73)
Designated derivatives | Foreign exchange contracts | Other liabilities | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	(15)	(10)
Designated derivatives | Interest rate contracts | Receivables - trade and other | Financial Products
Derivatives Fair Value
Asset Fair Value	19	15
Designated derivatives | Interest rate contracts | Long-term receivables - trade and other | Financial Products
Derivatives Fair Value
Asset Fair Value	220	233
Designated derivatives | Interest rate contracts | Accrued expenses | Financial Products
Derivatives Fair Value
Liability Fair Value	(5)	(6)
Undesignated derivatives
Derivatives Fair Value
Asset (Liability) Fair Value	(9)	(87)
Undesignated derivatives | Foreign exchange contracts | Receivables - trade and other | Machinery and Power Systems
Derivatives Fair Value
Asset Fair Value	18	27
Undesignated derivatives | Foreign exchange contracts | Receivables - trade and other | Financial Products
Derivatives Fair Value
Asset Fair Value	10	7
Undesignated derivatives | Foreign exchange contracts | Accrued expenses | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	(12)	(12)
Undesignated derivatives | Foreign exchange contracts | Accrued expenses | Financial Products
Derivatives Fair Value
Liability Fair Value	(5)	(16)
Undesignated derivatives | Foreign exchange contracts | Other liabilities | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	(20)	(85)
Undesignated derivatives | Interest rate contracts | Accrued expenses | Financial Products
Derivatives Fair Value
Liability Fair Value	(1)	(1)
Undesignated derivatives | Commodity contracts | Receivables - trade and other | Machinery and Power Systems
Derivatives Fair Value
Asset Fair Value	4	2
Undesignated derivatives | Commodity contracts | Accrued expenses | Machinery and Power Systems
Derivatives Fair Value
Liability Fair Value	$ (3)	$ (9)