Segment Information (Details 7) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reconciliation of Capital expenditures
Total capital expenditures	$ 615	$ 865	$ 1,124	$ 1,605
Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	622	807	1,026	1,314
All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	25	51	45	67
Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	14	16	23	28
Timing
Reconciliation of Capital expenditures
Total capital expenditures	(9)		79	217
Other
Reconciliation of Capital expenditures
Total capital expenditures	(37)	(9)	(49)	(21)
Consolidating Adjustments
Reconciliation of Capital expenditures
Total capital expenditures	(5)	(8)	(8)	(17)
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	(5)	(8)	(8)	(17)
Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	158	195	316	405
Machinery, Energy & Transportation | Business
Reconciliation of Capital expenditures
Total capital expenditures	170	239	379	618
Machinery, Energy & Transportation | Business | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	158	195	316	405
Machinery, Energy & Transportation | Business | All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	25	51	45	67
Machinery, Energy & Transportation | Business | Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	14	16	23	28
Machinery, Energy & Transportation | Business | Timing
Reconciliation of Capital expenditures
Total capital expenditures	(9)		79	217
Machinery, Energy & Transportation | Business | Other
Reconciliation of Capital expenditures
Total capital expenditures	(18)	(23)	(84)	(99)
Financial Products | Business
Reconciliation of Capital expenditures
Total capital expenditures	450	634	753	1,004
Financial Products | Business | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	464	612	710	909
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	$ (14)	$ 22	$ 43	$ 95