Segment Information (Details 5) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Items not included in segment depreciation and amortization:
All other operating segments	$ 43	$ 45
Cost centers	19	18
Other	(7)	9
Total depreciation and amortization	661	575
Reportable segments
Items not included in segment depreciation and amortization:
Total depreciation and amortization	606	503
Machinery and Power Systems
Items not included in segment depreciation and amortization:
All other operating segments	43	45
Cost centers	19	18
Other	(12)	5
Total depreciation and amortization	482	395
Machinery and Power Systems | Reportable segments
Items not included in segment depreciation and amortization:
Total depreciation and amortization	432	327
Financial Products
Items not included in segment depreciation and amortization:
Other	5	4
Total depreciation and amortization	179	180
Financial Products | Reportable segments
Items not included in segment depreciation and amortization:
Total depreciation and amortization	$ 174	$ 176