Sales and revenues by geographic region (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Sales and revenue by geographic region
Sales and revenues	$ 50,971	$ 41,748	$ 53,800
Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	55,429	45,338	58,456
Intersubsegment Eliminations
Sales and revenue by geographic region
Sales and revenues	(4,969)	(4,057)	(5,156)
Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	51,239	42,030	54,288
Corporate, Non-Segment | Intersubsegment Eliminations
Sales and revenue by geographic region
Sales and revenues	(413)	(395)	(615)
Segment Reconciling Items | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	4,190	3,308	4,168
Intersegment Eliminations | Intersubsegment Eliminations
Sales and revenue by geographic region
Sales and revenues	(4,556)	(3,662)	(4,541)
North America
Sales and revenue by geographic region
Sales and revenues	22,023	18,214	25,785
North America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	22,209	18,424	26,186
North America | Corporate, Non-Segment | Intersubsegment Eliminations
Sales and revenue by geographic region
Sales and revenues	(242)	(237)	(426)
Latin America
Sales and revenue by geographic region
Sales and revenues	5,086	3,432	4,710
Latin America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	5,135	3,473	4,754
Latin America | Corporate, Non-Segment | Intersubsegment Eliminations
Sales and revenue by geographic region
Sales and revenues	(51)	(45)	(51)
EAME
Sales and revenue by geographic region
Sales and revenues	12,137	9,858	11,223
EAME | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	12,155	9,876	11,250
EAME | Corporate, Non-Segment | Intersubsegment Eliminations
Sales and revenue by geographic region
Sales and revenues	(36)	(44)	(55)
Asia/Pacific
Sales and revenue by geographic region
Sales and revenues	11,725	10,244	12,082
Asia/Pacific | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	11,740	10,257	12,098
Asia/Pacific | Corporate, Non-Segment | Intersubsegment Eliminations
Sales and revenue by geographic region
Sales and revenues	(84)	(69)	(83)
Construction Industries | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	22,106	16,918	22,649
Construction Industries | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	21,994	16,876	22,556
Construction Industries | Segment Reconciling Items | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	112	42	93
Construction Industries | North America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	9,676	7,365	11,455
Construction Industries | Latin America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	1,913	1,031	1,533
Construction Industries | EAME | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	4,858	3,466	4,012
Construction Industries | Asia/Pacific | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	5,547	5,014	5,556
Resource Industries | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	9,963	7,906	10,276
Resource Industries | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	9,502	7,446	9,813
Resource Industries | Segment Reconciling Items | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	461	460	463
Resource Industries | North America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	2,987	2,286	3,632
Resource Industries | Latin America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	1,724	1,253	1,533
Resource Industries | EAME | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	1,987	1,570	1,836
Resource Industries | Asia/Pacific | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	2,804	2,337	2,812
Energy & Transportation
Sales and revenue by geographic region
Sales and revenues	16,670	14,664	18,485
Energy & Transportation | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	20,287	17,470	22,097
Energy & Transportation | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	16,670	14,664	18,485
Energy & Transportation | Segment Reconciling Items | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	3,617	2,806	3,612
Energy & Transportation | North America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	7,611	6,843	8,864
Energy & Transportation | Latin America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	1,233	932	1,389
Energy & Transportation | EAME | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	4,908	4,448	4,994
Energy & Transportation | Asia/Pacific | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	2,918	2,441	3,238
Financial Products Segment
Sales and revenue by geographic region
Revenue from Related Parties	351	362	524
Financial Products Segment | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	3,073	3,044	3,434
Financial Products Segment | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	3,073	3,044	3,434
Financial Products Segment | Segment Reconciling Items | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	0	0	0
Financial Products Segment | North America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	1,935	1,930	2,235
Financial Products Segment | Latin America | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	265	257	299
Financial Products Segment | EAME | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	402	392	408
Financial Products Segment | Asia/Pacific | Operating Segments | Reportable Subsegments
Sales and revenue by geographic region
Sales and revenues	471	465	492
All Other
Sales and revenue by geographic region
Sales and revenues	511	467	500
All Other | Operating Segments
Sales and revenue by geographic region
Sales and revenues	145	113	127
All Other | Segment Reconciling Items
Sales and revenue by geographic region
Sales and revenues	366	354	373
All Other | North America | Operating Segments
Sales and revenue by geographic region
Sales and revenues	56	27	25
All Other | Latin America | Operating Segments
Sales and revenue by geographic region
Sales and revenues	2	4	7
All Other | EAME | Operating Segments
Sales and revenue by geographic region
Sales and revenues	18	26	28
All Other | Asia/Pacific | Operating Segments
Sales and revenue by geographic region
Sales and revenues	$ 69	$ 56	$ 67