Segment Information (Details 4) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Reconciliation of restructuring
Consolidated profit before taxes	$ 365	$ 1,767
Restructuring costs	(161)	(35)	$ (898)
Reportable Segments
Reconciliation of restructuring
Consolidated profit before taxes	922	2,092
Reportable Segments \| Construction Industries
Reconciliation of restructuring
Consolidated profit before taxes	440	745
Reportable Segments \| Resource Industries
Reconciliation of restructuring
Consolidated profit before taxes	(96)	96
Reportable Segments \| Energy & Transportation
Reconciliation of restructuring
Consolidated profit before taxes	410	1,024
Reportable Segments \| Financial Products Segment
Reconciliation of restructuring
Consolidated profit before taxes	168	227
All Other operating segments
Reconciliation of restructuring
Consolidated profit before taxes	(7)	(7)
Business
Reconciliation of restructuring
Consolidated profit before taxes	915	2,085
Restructuring costs	(154)	(35)
Consolidated profit before taxes with restructuring costs	761	2,050
Business \| Reportable Segments \| Construction Industries
Reconciliation of restructuring
Consolidated profit before taxes	440	745
Restructuring costs	(22)	(23)
Consolidated profit before taxes with restructuring costs	418	722
Business \| Reportable Segments \| Resource Industries
Reconciliation of restructuring
Consolidated profit before taxes	(96)	96
Restructuring costs	(25)	(8)
Consolidated profit before taxes with restructuring costs	(121)	88
Business \| Reportable Segments \| Energy & Transportation
Reconciliation of restructuring
Consolidated profit before taxes	410	1,024
Restructuring costs	(100)	(3)
Consolidated profit before taxes with restructuring costs	310	1,021
Business \| Reportable Segments \| Financial Products Segment
Reconciliation of restructuring
Consolidated profit before taxes	168	227
Restructuring costs	(2)	0
Consolidated profit before taxes with restructuring costs	166	227
Business \| All Other operating segments \| All Other
Reconciliation of restructuring
Consolidated profit before taxes	(7)	(7)
Restructuring costs	(5)	(1)
Consolidated profit before taxes with restructuring costs	$ (12)	$ (8)

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

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