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Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Revenue	$ 5,634	$ 5,356	$ 10,857	$ 12,811
Digital Integration
Segment Reporting Information [Line Items]
Revenue	817	619	1,590	1,503
Reservoir Performance
Segment Reporting Information [Line Items]
Revenue	1,117	1,170	2,119	3,139
Well Construction
Segment Reporting Information [Line Items]
Revenue	2,110	2,089	4,045	4,904
Production Systems
Segment Reporting Information [Line Items]
Revenue	1,681	1,557	3,271	3,469
Eliminations & Other
Segment Reporting Information [Line Items]
Revenue	(91)	(79)	(168)	(204)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,634	5,356	10,857	12,811
Operating Segments | Digital Integration
Segment Reporting Information [Line Items]
Revenue	817	619	1,590	1,503
Operating Segments | Reservoir Performance
Segment Reporting Information [Line Items]
Revenue	1,117	1,170	2,119	3,139
Operating Segments | Production Systems
Segment Reporting Information [Line Items]
Revenue	1,681	1,557	3,271	3,469
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	40	35	80	85
Eliminations & other | Digital Integration
Segment Reporting Information [Line Items]
Revenue	1	4	3	4
Eliminations & other | Reservoir Performance
Segment Reporting Information [Line Items]
Revenue		3	2	5
Eliminations & other | Well Construction
Segment Reporting Information [Line Items]
Revenue	50	54	97	112
Eliminations & other | Production Systems
Segment Reporting Information [Line Items]
Revenue	3	2	11	21
Eliminations & other | Eliminations & Other
Segment Reporting Information [Line Items]
Revenue	(14)	(28)	(33)	(57)
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	1,083	1,097	2,055	3,277
North America | Operating Segments | Digital Integration
Segment Reporting Information [Line Items]
Revenue	191	145	352	297
North America | Operating Segments | Reservoir Performance
Segment Reporting Information [Line Items]
Revenue	79	215	157	933
North America | Operating Segments | Well Construction
Segment Reporting Information [Line Items]
Revenue	352	331	663	965
North America | Operating Segments | Production Systems
Segment Reporting Information [Line Items]
Revenue	458	409	878	1,099
North America | Operating Segments | Eliminations & Other
Segment Reporting Information [Line Items]
Revenue	3	(3)	5	(17)
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	4,511	4,224	8,722	9,449
International | Operating Segments | Digital Integration
Segment Reporting Information [Line Items]
Revenue	625	470	1,235	1,202
International | Operating Segments | Reservoir Performance
Segment Reporting Information [Line Items]
Revenue	1,038	952	1,960	2,201
International | Operating Segments | Well Construction
Segment Reporting Information [Line Items]
Revenue	1,708	1,704	3,285	3,827
International | Operating Segments | Production Systems
Segment Reporting Information [Line Items]
Revenue	1,220	1,146	2,382	2,349
International | Operating Segments | Eliminations & Other
Segment Reporting Information [Line Items]
Revenue	$ (80)	$ (48)	$ (140)	$ (130)

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