Derivative Financial Instruments and Risk Management (Details 5) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Offsetting Liabilities
Gross Amount of Recognized Liabilities	$ (217)	$ (144)
Gross Amounts Offset in the Statement of Financial Postion	0	0
Net Amounts of Liabilities Presented in the Statement of Fnancial Position	(217)	(144)
Financial Instruments	103	71
Cash Collateral Pledged	0	0
Net Amount of Liabilities	(114)	(73)
Machinery and Power Systems
Offsetting Liabilities
Gross Amount of Recognized Liabilities	(188)	(129)
Gross Amounts Offset in the Statement of Financial Postion	0	0
Net Amounts of Liabilities Presented in the Statement of Fnancial Position	(188)	(129)
Financial Instruments	84	59
Cash Collateral Pledged	0	0
Net Amount of Liabilities	(104)	(70)
Financial Products
Offsetting Liabilities
Gross Amount of Recognized Liabilities	(29)	(15)
Gross Amounts Offset in the Statement of Financial Postion	0	0
Net Amounts of Liabilities Presented in the Statement of Fnancial Position	(29)	(15)
Financial Instruments	19	12
Cash Collateral Pledged	0	0
Net Amount of Liabilities	$ (10)	$ (3)