Segment Information (Details 6) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Reconciliation of Depreciation and amortization
Total depreciation and amortization	$ 753	$ 781
Reportable Segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	651	682
All Other operating segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	66	66
Cost Centers
Reconciliation of Depreciation and amortization
Total depreciation and amortization	38	37
Other
Reconciliation of Depreciation and amortization
Total depreciation and amortization	(2)	(4)
Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	436	463
Machinery, Energy & Transportation | Business
Reconciliation of Depreciation and amortization
Total depreciation and amortization	530	556
Machinery, Energy & Transportation | Business | Reportable Segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	436	463
Machinery, Energy & Transportation | Business | All Other operating segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	66	66
Machinery, Energy & Transportation | Business | Cost Centers
Reconciliation of Depreciation and amortization
Total depreciation and amortization	38	37
Machinery, Energy & Transportation | Business | Other
Reconciliation of Depreciation and amortization
Total depreciation and amortization	(10)	(10)
Financial Products | Business
Reconciliation of Depreciation and amortization
Total depreciation and amortization	223	225
Financial Products | Business | Reportable Segments
Reconciliation of Depreciation and amortization
Total depreciation and amortization	215	219
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	$ 8	$ 6