Segment Information (Details 4) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Reconciliation of restructuring and related costs
Consolidated profit before taxes	$ 518	$ 1,381	$ 3,065	$ 4,143
Restructuring costs	(89)	(81)	(214)	(344)	$ (441)
Reportable Segments
Reconciliation of restructuring and related costs
Consolidated profit before taxes	1,152	1,976	4,867	5,940
Reportable Segments \| Construction Industries
Reconciliation of restructuring and related costs
Consolidated profit before taxes	378	483	1,705	1,845
Reportable Segments \| Resource Industries
Reconciliation of restructuring and related costs
Consolidated profit before taxes	(68)	122	17	379
Reportable Segments \| Energy & Transportation
Reconciliation of restructuring and related costs
Consolidated profit before taxes	635	1,151	2,527	3,012
Reportable Segments \| Financial Products Segment
Reconciliation of restructuring and related costs
Consolidated profit before taxes	207	220	618	704
All Other operating segments
Reconciliation of restructuring and related costs
Consolidated profit before taxes	196	228	638	686
Business
Reconciliation of restructuring and related costs
Consolidated profit before taxes	1,348	2,204	5,505	6,626
Restructuring costs	(88)	(78)	(203)	(338)
Consolidated profit before taxes with restructuring costs	1,260	2,126	5,302	6,288
Business \| Reportable Segments \| Construction Industries
Reconciliation of restructuring and related costs
Consolidated profit before taxes	378	483	1,705	1,845
Restructuring costs	(22)	(30)	(61)	(257)
Consolidated profit before taxes with restructuring costs	356	453	1,644	1,588
Business \| Reportable Segments \| Resource Industries
Reconciliation of restructuring and related costs
Consolidated profit before taxes	(68)	122	17	379
Restructuring costs	(40)	(31)	(83)	(52)
Consolidated profit before taxes with restructuring costs	(108)	91	(66)	327
Business \| Reportable Segments \| Energy & Transportation
Reconciliation of restructuring and related costs
Consolidated profit before taxes	635	1,151	2,527	3,012
Restructuring costs	(10)	(5)	(24)	(11)
Consolidated profit before taxes with restructuring costs	625	1,146	2,503	3,001
Business \| Reportable Segments \| Financial Products Segment
Reconciliation of restructuring and related costs
Consolidated profit before taxes	207	220	618	704
Restructuring costs	0	0	0	0
Consolidated profit before taxes with restructuring costs	207	220	618	704
Business \| All Other operating segments \| All Other
Reconciliation of restructuring and related costs
Consolidated profit before taxes	196	228	638	686
Restructuring costs	(16)	(12)	(35)	(18)
Consolidated profit before taxes with restructuring costs	$ 180	$ 216	$ 603	$ 668

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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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