Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenue	$ 5,223	$ 7,455
Digital Integration
Segment Reporting Information [Line Items]
Revenue	773	885
Reservoir Performance
Segment Reporting Information [Line Items]
Revenue	1,002	1,969
Well Construction
Segment Reporting Information [Line Items]
Revenue	1,935	2,815
Production Systems
Segment Reporting Information [Line Items]
Revenue	1,590	1,912
Eliminations & Other
Segment Reporting Information [Line Items]
Revenue	(77)	(126)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,223	7,455
Operating Segments | Digital Integration
Segment Reporting Information [Line Items]
Revenue	773	885
Operating Segments | Reservoir Performance
Segment Reporting Information [Line Items]
Revenue	1,002	1,969
Operating Segments | Production Systems
Segment Reporting Information [Line Items]
Revenue	1,590	1,912
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	40	50
Eliminations & other | Digital Integration
Segment Reporting Information [Line Items]
Revenue	2	2
Eliminations & other | Reservoir Performance
Segment Reporting Information [Line Items]
Revenue	2	2
Eliminations & other | Well Construction
Segment Reporting Information [Line Items]
Revenue	48	56
Eliminations & other | Production Systems
Segment Reporting Information [Line Items]
Revenue	9	19
Eliminations & other | Eliminations & Other
Segment Reporting Information [Line Items]
Revenue	(21)	(29)
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	972	2,180
North America | Operating Segments | Digital Integration
Segment Reporting Information [Line Items]
Revenue	161	152
North America | Operating Segments | Reservoir Performance
Segment Reporting Information [Line Items]
Revenue	78	718
North America | Operating Segments | Well Construction
Segment Reporting Information [Line Items]
Revenue	310	635
North America | Operating Segments | Production Systems
Segment Reporting Information [Line Items]
Revenue	420	690
North America | Operating Segments | Eliminations & Other
Segment Reporting Information [Line Items]
Revenue	3	(15)
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	4,211	5,225
International | Operating Segments | Digital Integration
Segment Reporting Information [Line Items]
Revenue	610	731
International | Operating Segments | Reservoir Performance
Segment Reporting Information [Line Items]
Revenue	922	1,249
International | Operating Segments | Well Construction
Segment Reporting Information [Line Items]
Revenue	1,577	2,124
International | Operating Segments | Production Systems
Segment Reporting Information [Line Items]
Revenue	1,161	1,203
International | Operating Segments | Eliminations & Other
Segment Reporting Information [Line Items]
Revenue	$ (59)	$ (82)