Segment Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of Sales and revenues
Sales and revenues	$ 13,423	$ 16,445	$ 41,254	$ 49,800
Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	13,280	16,211	40,843	48,804
All Other operating segment
Reconciliation of Sales and revenues
Sales and revenues	219	318	647	1,246
Other
Reconciliation of Sales and revenues
Sales and revenues	(76)	(84)	(236)	(250)
Consolidating Adjustments
Reconciliation of Sales and revenues
Sales and revenues	(80)	(90)	(256)	(264)
Consolidating Adjustments | Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	0	0	0	0
Consolidating Adjustments | All Other operating segment
Reconciliation of Sales and revenues
Sales and revenues	0	0	0	0
Consolidating Adjustments | Other
Reconciliation of Sales and revenues
Sales and revenues	(80)	(90)	(256)	(264)
Machinery and Power Systems | Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	12,473	15,435	38,435	46,503
Machinery and Power Systems | Business
Reconciliation of Sales and revenues
Sales and revenues	12,678	15,739	39,048	47,711
Machinery and Power Systems | Business | Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	12,473	15,435	38,435	46,503
Machinery and Power Systems | Business | All Other operating segment
Reconciliation of Sales and revenues
Sales and revenues	219	318	647	1,246
Machinery and Power Systems | Business | Other
Reconciliation of Sales and revenues
Sales and revenues	(14)	(14)	(34)	(38)
Financial Products | Business
Reconciliation of Sales and revenues
Sales and revenues	825	796	2,462	2,353
Financial Products | Business | Reportable Segments
Reconciliation of Sales and revenues
Sales and revenues	807	776	2,408	2,301
Financial Products | Business | All Other operating segment
Reconciliation of Sales and revenues
Sales and revenues	0	0	0	0
Financial Products | Business | Other
Reconciliation of Sales and revenues
Sales and revenues	$ 18	$ 20	$ 54	$ 52