Segment Information (Details 5) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Items not included in segment depreciation and amortization:
All other operating segments	$ 41	$ 42	$ 125	$ 128
Cost centers	23	20	64	57
Other	(3)	(5)	(15)	34
Total depreciation and amortization	720	658	2,070	1,832
Reportable segments
Items not included in segment depreciation and amortization:
Total depreciation and amortization	659	601	1,896	1,613
Machinery and Power Systems
Items not included in segment depreciation and amortization:
All other operating segments	41	42	125	128
Cost centers	23	20	64	57
Other	(9)	(9)	(32)	24
Total depreciation and amortization	535	477	1,523	1,287
Machinery and Power Systems | Reportable segments
Items not included in segment depreciation and amortization:
Total depreciation and amortization	480	424	1,366	1,078
Financial Products
Items not included in segment depreciation and amortization:
All other operating segments	0	0	0	0
Cost centers	0	0	0	0
Other	6	4	17	10
Total depreciation and amortization	185	181	547	545
Financial Products | Reportable segments
Items not included in segment depreciation and amortization:
Total depreciation and amortization	$ 179	$ 177	$ 530	$ 535