Sales and revenues by geographic region (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Sales and revenues by geographic region
Sales and revenues	$ 12,397	$ 9,881	$ 37,173	$ 30,513
Reportable Segments
Sales and revenues by geographic region
Sales and revenues	13,500	10,757	40,427	33,096
Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	12,455	9,951	37,380	30,720
Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	1,045	806	3,047	2,376
Corporate Items and Eliminations
Sales and revenues by geographic region
Sales and revenues	(1,222)	(982)	(3,631)	(2,913)
Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(93)	(95)	(314)	(288)
Corporate Items and Eliminations | Intersegment Eliminations
Sales and revenues by geographic region
Sales and revenues	(1,129)	(887)	(3,317)	(2,625)
North America
Sales and revenues by geographic region
Sales and revenues	5,455	4,251	16,165	13,617
North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	5,493	4,300	16,311	13,764
North America | Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(56)	(59)	(188)	(169)
Latin America
Sales and revenues by geographic region
Sales and revenues	1,329	772	3,654	2,394
Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,342	783	3,689	2,426
Latin America | Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(13)	(12)	(36)	(36)
EAME
Sales and revenues by geographic region
Sales and revenues	2,939	2,384	8,784	7,154
EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	2,945	2,393	8,801	7,169
EAME | Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(9)	(10)	(27)	(32)
Asia/Pacific
Sales and revenues by geographic region
Sales and revenues	2,674	2,474	8,570	7,348
Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	2,675	2,475	8,579	7,361
Asia/Pacific | Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(15)	(14)	(63)	(51)
Construction Industries | Reportable Segments
Sales and revenues by geographic region
Sales and revenues	5,255	4,056	16,370	12,410
Construction Industries | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	5,261	4,048	16,305	12,392
Construction Industries | Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	(6)	8	65	18
Construction Industries | North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	2,417	1,781	7,041	5,470
Construction Industries | Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	528	230	1,350	707
Construction Industries | EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,240	796	3,612	2,618
Construction Industries | Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,076	1,241	4,302	3,597
Resource Industries | Reportable Segments
Sales and revenues by geographic region
Sales and revenues	2,406	1,816	7,201	5,726
Resource Industries | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	2,291	1,704	6,859	5,393
Resource Industries | Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	115	112	342	333
Resource Industries | North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	674	487	2,130	1,690
Resource Industries | Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	417	269	1,309	859
Resource Industries | EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	456	384	1,455	1,158
Resource Industries | Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	744	564	1,965	1,686
Energy & Transportation
Sales and revenues by geographic region
Sales and revenues	4,141	3,475	11,919	10,634
Energy & Transportation | Reportable Segments
Sales and revenues by geographic region
Sales and revenues	5,077	4,161	14,559	12,659
Energy & Transportation | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	4,141	3,475	11,919	10,634
Energy & Transportation | Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	936	686	2,640	2,025
Energy & Transportation | North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,924	1,584	5,698	5,138
Energy & Transportation | Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	329	221	835	667
Energy & Transportation | EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,144	1,113	3,433	3,095
Energy & Transportation | Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	744	557	1,953	1,734
Financial Products Segment
Sales and revenues by geographic region
Revenue from Related Parties	87	81	263	274
Financial Products Segment | Reportable Segments
Sales and revenues by geographic region
Sales and revenues	762	724	2,297	2,301
Financial Products Segment | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	762	724	2,297	2,301
Financial Products Segment | Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	0	0	0	0
Financial Products Segment | North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	478	448	1,442	1,466
Financial Products Segment | Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	68	63	195	193
Financial Products Segment | EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	105	100	301	298
Financial Products Segment | Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	111	113	359	344
All Other Operating Segments
Sales and revenues by geographic region
Sales and revenues	119	106	377	330
All Other Operating Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	35	25	107	81
All Other Operating Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	84	81	270	249
All Other Operating Segments | North America | Operating Segments
Sales and revenues by geographic region
Sales and revenues	18	10	42	22
All Other Operating Segments | Latin America | Operating Segments
Sales and revenues by geographic region
Sales and revenues	0	1	1	4
All Other Operating Segments | EAME | Operating Segments
Sales and revenues by geographic region
Sales and revenues	3	1	10	17
All Other Operating Segments | Asia/Pacific | Operating Segments
Sales and revenues by geographic region
Sales and revenues	$ 14	$ 13	$ 54	$ 38