Segment Information (Details 7) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Reconciliation of Depreciation and amortization
Total depreciation and amortization	$ 641	$ 681
Reportable Segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	543	566
All Other operating segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	52	57
Cost Centers
Reconciliation of Depreciation and amortization
Total depreciation and amortization	32	31
Other
Reconciliation of Depreciation and amortization
Total depreciation and amortization	14	27
Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	337	363
Machinery, Energy & Transportation | Business
Reconciliation of Depreciation and amortization
Total depreciation and amortization	424	468
Machinery, Energy & Transportation | Business | Reportable Segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	337	363
Machinery, Energy & Transportation | Business | All Other operating segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	52	57
Machinery, Energy & Transportation | Business | Cost Centers
Reconciliation of Depreciation and amortization
Total depreciation and amortization	32	31
Machinery, Energy & Transportation | Business | Other
Reconciliation of Depreciation and amortization
Total depreciation and amortization	3	17
Financial Products | Business
Reconciliation of Depreciation and amortization
Total depreciation and amortization	217	213
Financial Products | Business | Reportable Segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	206	203
Financial Products | Business | All Other operating segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	0	0
Financial Products | Business | Cost Centers
Reconciliation of Depreciation and amortization
Total depreciation and amortization	0	0
Financial Products | Business | Other
Reconciliation of Depreciation and amortization
Total depreciation and amortization	$ 11	$ 10