Segment Information (Details 5) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Reconciliation of Assets
Total assets	$ 84,397	$ 84,896
Reportable Segments
Reconciliation of Assets
Total assets	62,963	63,468
All Other operating segments
Reconciliation of Assets
Total assets	2,717	2,973
Cash and Short Term Investments
Reconciliation of Assets
Total assets	4,057	4,597
Intercompany Receivables
Reconciliation of Assets
Total assets	0	0
Investment in Financial Products
Reconciliation of Assets
Total assets	0	0
Deferred Income Taxes
Reconciliation of Assets
Total assets	1,946	2,016
Goodwill and Intangible Assets
Reconciliation of Assets
Total assets	3,881	3,582
Property Plant and Equipment-Net and Other Assets
Reconciliation of Assets
Total assets	1,298	1,175
Operating Lease Methodology Difference
Reconciliation of Assets
Total assets	(191)	(273)
Liabilities Included in Segment Assets
Reconciliation of Assets
Total assets	10,523	10,357
Inventory Methodology Differences
Reconciliation of Assets
Total assets	(2,544)	(2,539)
Other
Reconciliation of Assets
Total assets	(253)	(460)
Consolidating Adjustments
Reconciliation of Assets
Total assets	(6,714)	(6,653)
Consolidating Adjustments | Reportable Segments
Reconciliation of Assets
Total assets	0	0
Consolidating Adjustments | All Other operating segments
Reconciliation of Assets
Total assets	0	0
Consolidating Adjustments | Cash and Short Term Investments
Reconciliation of Assets
Total assets	0	0
Consolidating Adjustments | Intercompany Receivables
Reconciliation of Assets
Total assets	(1,223)	(1,219)
Consolidating Adjustments | Investment in Financial Products
Reconciliation of Assets
Total assets	(4,919)	(4,798)
Consolidating Adjustments | Deferred Income Taxes
Reconciliation of Assets
Total assets	(488)	(525)
Consolidating Adjustments | Goodwill and Intangible Assets
Reconciliation of Assets
Total assets	0	0
Consolidating Adjustments | Property Plant and Equipment-Net and Other Assets
Reconciliation of Assets
Total assets	0	0
Consolidating Adjustments | Operating Lease Methodology Difference
Reconciliation of Assets
Total assets	0	0
Consolidating Adjustments | Liabilities Included in Segment Assets
Reconciliation of Assets
Total assets	0	0
Consolidating Adjustments | Inventory Methodology Differences
Reconciliation of Assets
Total assets	0	0
Consolidating Adjustments | Other
Reconciliation of Assets
Total assets	(84)	(111)
Machinery, Energy & Transportation | Reportable Segments
Reconciliation of Assets
Total assets	25,548	26,488
Machinery, Energy & Transportation | Business
Reconciliation of Assets
Total assets	53,770	54,704
Machinery, Energy & Transportation | Business | Reportable Segments
Reconciliation of Assets
Total assets	25,548	26,488
Machinery, Energy & Transportation | Business | All Other operating segments
Reconciliation of Assets
Total assets	2,717	2,973
Machinery, Energy & Transportation | Business | Cash and Short Term Investments
Reconciliation of Assets
Total assets	4,057	4,597
Machinery, Energy & Transportation | Business | Intercompany Receivables
Reconciliation of Assets
Total assets	1,223	1,219
Machinery, Energy & Transportation | Business | Investment in Financial Products
Reconciliation of Assets
Total assets	4,919	4,798
Machinery, Energy & Transportation | Business | Deferred Income Taxes
Reconciliation of Assets
Total assets	2,434	2,541
Machinery, Energy & Transportation | Business | Goodwill and Intangible Assets
Reconciliation of Assets
Total assets	3,881	3,582
Machinery, Energy & Transportation | Business | Property Plant and Equipment-Net and Other Assets
Reconciliation of Assets
Total assets	1,298	1,175
Machinery, Energy & Transportation | Business | Operating Lease Methodology Difference
Reconciliation of Assets
Total assets	(191)	(273)
Machinery, Energy & Transportation | Business | Liabilities Included in Segment Assets
Reconciliation of Assets
Total assets	10,523	10,357
Machinery, Energy & Transportation | Business | Inventory Methodology Differences
Reconciliation of Assets
Total assets	(2,544)	(2,539)
Machinery, Energy & Transportation | Business | Other
Reconciliation of Assets
Total assets	(95)	(214)
Financial Products | Business
Reconciliation of Assets
Total assets	37,341	36,845
Financial Products | Business | Reportable Segments
Reconciliation of Assets
Total assets	37,415	36,980
Financial Products | Business | All Other operating segments
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Cash and Short Term Investments
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Intercompany Receivables
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Investment in Financial Products
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Deferred Income Taxes
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Goodwill and Intangible Assets
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Property Plant and Equipment-Net and Other Assets
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Operating Lease Methodology Difference
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Liabilities Included in Segment Assets
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Inventory Methodology Differences
Reconciliation of Assets
Total assets	0	0
Financial Products | Business | Other
Reconciliation of Assets
Total assets	$ (74)	$ (135)