Derivative Financial Instruments and Risk Management (Details 4) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Offsetting Assets
Gross Amount of Recognized Assets	$ 255	$ 298
Gross Amounts Offset in the Statement of Fnancial Position	0	0
Net Amount of Assets Presented in the Statement of Financial Position	255	298
Financial Instruments	(61)	(71)
Cash Collateral Received	0	0
Net Amount of Assets	194	227
Machinery and Power Systems
Offsetting Assets
Gross Amount of Recognized Assets	92	60
Gross Amounts Offset in the Statement of Fnancial Position	0	0
Net Amount of Assets Presented in the Statement of Financial Position	92	60
Financial Instruments	(52)	(59)
Cash Collateral Received	0	0
Net Amount of Assets	40	1
Financial Products
Offsetting Assets
Gross Amount of Recognized Assets	163	238
Gross Amounts Offset in the Statement of Fnancial Position	0	0
Net Amount of Assets Presented in the Statement of Financial Position	163	238
Financial Instruments	(9)	(12)
Cash Collateral Received	0	0
Net Amount of Assets	$ 154	$ 226