Segment Information (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reconciliation of Sales and revenues
Sales and revenues	$ 10,962	$ 13,549	$ 35,981	$ 40,940
Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	10,553	13,079	34,494	39,516
All Other operating segments
Reconciliation of Sales and revenues
Sales and revenues	506	583	1,729	1,720
Other
Reconciliation of Sales and revenues
Sales and revenues	(97)	(113)	(242)	(296)
Consolidating Adjustments
Reconciliation of Sales and revenues
Sales and revenues	(95)	(84)	(238)	(259)
Consolidating Adjustments | Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	0	0	0	0
Consolidating Adjustments | All Other operating segments
Reconciliation of Sales and revenues
Sales and revenues	0	0	0	0
Consolidating Adjustments | Other
Reconciliation of Sales and revenues
Sales and revenues	(95)	(84)	(238)	(259)
Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	9,801	12,228	32,162	37,014
Machinery, Energy & Transportation | Business
Reconciliation of Sales and revenues
Sales and revenues	10,285	12,758	33,829	38,642
Machinery, Energy & Transportation | Business | Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	9,801	12,228	32,162	37,014
Machinery, Energy & Transportation | Business | All Other operating segments
Reconciliation of Sales and revenues
Sales and revenues	506	583	1,729	1,720
Machinery, Energy & Transportation | Business | Other
Reconciliation of Sales and revenues
Sales and revenues	(22)	(53)	(62)	(92)
Financial Products | Business
Reconciliation of Sales and revenues
Sales and revenues	772	875	2,390	2,557
Financial Products | Business | Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	752	851	2,332	2,502
Financial Products | Business | All Other operating segments
Reconciliation of Sales and revenues
Sales and revenues	0	0	0	0
Financial Products | Business | Other
Reconciliation of Sales and revenues
Sales and revenues	$ 20	$ 24	$ 58	$ 55