Segment Information (Details 6) (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 capital expenditures:
All other operating segments	$ 75	$ 84	$ 229	$ 173
Cost centers	16	20	119	54
Timing	(40)	(89)	281	151
Other	28	(3)	(145)	4
Total capital expenditures	1,231	995	3,526	2,499
Reportable segments
Segment Reporting Information, Capital Expenditure
Total accountable capital expenditures from reportable segments	1,152	983	3,042	2,117
Machinery and Power Systems
Items not included in segment capital expenditures:
All other operating segments	75	84	229	173
Cost centers	16	20	119	54
Timing	(40)	(89)	281	151
Other	8	(77)	(115)	(80)
Total capital expenditures	779	610	2,324	1,585
Machinery and Power Systems | Reportable segments
Segment Reporting Information, Capital Expenditure
Total accountable capital expenditures from reportable segments	720	672	1,810	1,287
Financial Products
Items not included in segment capital expenditures:
All other operating segments	0	0	0	0
Cost centers	0	0	0	0
Timing	0	0	0	0
Other	35	92	109	147
Total capital expenditures	467	403	1,341	977
Financial Products | Reportable segments
Segment Reporting Information, Capital Expenditure
Total accountable capital expenditures from reportable segments	432	311	1,232	830
Consolidating Adjustments
Items not included in segment capital expenditures:
All other operating segments	0	0	0	0
Cost centers	0	0	0	0
Timing	0	0	0	0
Other	(15)	(18)	(139)	(63)
Total capital expenditures	(15)	(18)	(139)	(63)
Consolidating Adjustments | Reportable segments
Segment Reporting Information, Capital Expenditure
Total accountable capital expenditures from reportable segments	$ 0	$ 0	$ 0	$ 0