Segment Information (Details 7) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Reconciliation of Capital expenditures
Total capital expenditures	$ 865	$ 645	$ 1,605	$ 1,471
Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	807	667	1,314	1,195
All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	51	28	67	53
Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	16	27	28	46
Timing
Reconciliation of Capital expenditures
Total capital expenditures		(19)	217	234
Other
Reconciliation of Capital expenditures
Total capital expenditures	(9)	(58)	(21)	(57)
Consolidating Adjustments
Reconciliation of Capital expenditures
Total capital expenditures	(8)	(11)	(17)	(19)
Consolidating Adjustments | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	0	0	0	0
Consolidating Adjustments | All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	0	0	0	0
Consolidating Adjustments | Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	0	0	0	0
Consolidating Adjustments | Timing
Reconciliation of Capital expenditures
Total capital expenditures		0	0	0
Consolidating Adjustments | Other
Reconciliation of Capital expenditures
Total capital expenditures	(8)	(11)	(17)	(19)
Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	195	325	405	559
Machinery, Energy & Transportation | Business
Reconciliation of Capital expenditures
Total capital expenditures	239	282	618	759
Machinery, Energy & Transportation | Business | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	195	325	405	559
Machinery, Energy & Transportation | Business | All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	51	28	67	53
Machinery, Energy & Transportation | Business | Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	16	27	28	46
Machinery, Energy & Transportation | Business | Timing
Reconciliation of Capital expenditures
Total capital expenditures		(19)	217	234
Machinery, Energy & Transportation | Business | Other
Reconciliation of Capital expenditures
Total capital expenditures	(23)	(79)	(99)	(133)
Financial Products | Business
Reconciliation of Capital expenditures
Total capital expenditures	634	374	1,004	731
Financial Products | Business | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	612	342	909	636
Financial Products | Business | All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	0	0	0	0
Financial Products | Business | Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	0	0	0	0
Financial Products | Business | Timing
Reconciliation of Capital expenditures
Total capital expenditures		0	0	0
Financial Products | Business | Other
Reconciliation of Capital expenditures
Total capital expenditures	$ 22	$ 32	$ 95	$ 95