Sales and revenues by geographic region (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Sales and revenues by geographic region
Sales and revenues	$ 11,887	$ 10,635
Reportable Segments
Sales and revenues by geographic region
Sales and revenues	12,943	11,553
Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	11,957	10,723
Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	986	830
Corporate Items and Eliminations
Sales and revenues by geographic region
Sales and revenues	(1,186)	(1,027)
Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(108)	(116)
Corporate Items and Eliminations | Intersegment Eliminations
Sales and revenues by geographic region
Sales and revenues	(1,078)	(911)
North America
Sales and revenues by geographic region
Sales and revenues	4,991	4,980
North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	5,041	5,044
North America | Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(63)	(69)
Latin America
Sales and revenues by geographic region
Sales and revenues	1,104	892
Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,115	904
Latin America | Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(11)	(14)
EAME
Sales and revenues by geographic region
Sales and revenues	2,743	2,437
EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	2,748	2,439
EAME | Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(8)	(13)
Asia/Pacific
Sales and revenues by geographic region
Sales and revenues	3,049	2,326
Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	3,053	2,336
Asia/Pacific | Corporate Items and Eliminations | Corporate, Non-Segment
Sales and revenues by geographic region
Sales and revenues	(26)	(20)
Construction Industries | Reportable Segments
Sales and revenues by geographic region
Sales and revenues	5,459	4,306
Construction Industries | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	5,441	4,312
Construction Industries | Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	18	(6)
Construction Industries | North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	2,126	2,085
Construction Industries | Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	392	265
Construction Industries | EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,081	889
Construction Industries | Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,842	1,073
Resource Industries | Reportable Segments
Sales and revenues by geographic region
Sales and revenues	2,216	2,084
Resource Industries | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	2,097	1,979
Resource Industries | Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	119	105
Resource Industries | North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	657	696
Resource Industries | Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	405	320
Resource Industries | EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	474	395
Resource Industries | Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	561	568
Energy & Transportation
Sales and revenues by geographic region
Sales and revenues	3,658	3,618
Energy & Transportation | Reportable Segments
Sales and revenues by geographic region
Sales and revenues	4,507	4,349
Energy & Transportation | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	3,658	3,618
Energy & Transportation | Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	849	731
Energy & Transportation | North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,782	1,738
Energy & Transportation | Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	256	249
Energy & Transportation | EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	1,093	1,053
Energy & Transportation | Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	527	578
Financial Products Segment
Sales and revenues by geographic region
Revenue from Related Parties	84	105
Financial Products Segment | Reportable Segments
Sales and revenues by geographic region
Sales and revenues	761	814
Financial Products Segment | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	761	814
Financial Products Segment | Reportable Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	0	0
Financial Products Segment | North America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	476	525
Financial Products Segment | Latin America | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	62	70
Financial Products Segment | EAME | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	100	102
Financial Products Segment | Asia/Pacific | Reportable Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	123	117
All Other Operating Segments
Sales and revenues by geographic region
Sales and revenues	130	109
All Other Operating Segments | Operating Segments
Sales and revenues by geographic region
Sales and revenues	38	28
All Other Operating Segments | Segment Reconciling Items
Sales and revenues by geographic region
Sales and revenues	92	81
All Other Operating Segments | North America | Operating Segments
Sales and revenues by geographic region
Sales and revenues	13	5
All Other Operating Segments | Latin America | Operating Segments
Sales and revenues by geographic region
Sales and revenues	0	2
All Other Operating Segments | EAME | Operating Segments
Sales and revenues by geographic region
Sales and revenues	3	11
All Other Operating Segments | Asia/Pacific | Operating Segments
Sales and revenues by geographic region
Sales and revenues	$ 22	$ 10