Segment Information (Details 8) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Reconciliation of Capital expenditures
Total capital expenditures	$ 547	$ 757
Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	395	588
All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	13	11
Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	20	14
Timing
Reconciliation of Capital expenditures
Total capital expenditures	134	175
Other
Reconciliation of Capital expenditures
Total capital expenditures	(15)	(31)
Consolidating Adjustments
Reconciliation of Capital expenditures
Total capital expenditures	(1)	(4)
Consolidating Adjustments | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	0	0
Consolidating Adjustments | All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	0	0
Consolidating Adjustments | Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	0	0
Consolidating Adjustments | Timing
Reconciliation of Capital expenditures
Total capital expenditures	0	0
Consolidating Adjustments | Other
Reconciliation of Capital expenditures
Total capital expenditures	(1)	(4)
Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	149	227
Machinery, Energy & Transportation | Business
Reconciliation of Capital expenditures
Total capital expenditures	297	323
Machinery, Energy & Transportation | Business | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	149	227
Machinery, Energy & Transportation | Business | All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	13	11
Machinery, Energy & Transportation | Business | Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	20	14
Machinery, Energy & Transportation | Business | Timing
Reconciliation of Capital expenditures
Total capital expenditures	134	175
Machinery, Energy & Transportation | Business | Other
Reconciliation of Capital expenditures
Total capital expenditures	(19)	(104)
Financial Products | Business
Reconciliation of Capital expenditures
Total capital expenditures	251	438
Financial Products | Business | Reportable Segments
Reconciliation of Capital expenditures
Total capital expenditures	246	361
Financial Products | Business | All Other operating segments
Reconciliation of Capital expenditures
Total capital expenditures	0	0
Financial Products | Business | Cost Centers
Reconciliation of Capital expenditures
Total capital expenditures	0	0
Financial Products | Business | Timing
Reconciliation of Capital expenditures
Total capital expenditures	0	0
Financial Products | Business | Other
Reconciliation of Capital expenditures
Total capital expenditures	$ 5	$ 77