Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenue	$ 5,356	$ 8,269	$ 12,811	$ 16,149
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,052	1,558	2,363	3,017
Drilling
Segment Reporting Information [Line Items]
Revenue	1,731	2,420	4,020	4,806
Production
Segment Reporting Information [Line Items]
Revenue	1,615	3,077	4,318	5,967
Cameron
Segment Reporting Information [Line Items]
Revenue	1,015	1,328	2,270	2,586
Other
Segment Reporting Information [Line Items]
Revenue	(57)	(114)	(160)	(227)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,356	8,269	12,811	16,149
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,052	1,558	2,363	3,017
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	1,731	2,420	4,020	4,806
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,615	3,077	4,318	5,967
Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	1,015	1,328	2,270	2,586
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	35	5	88	111
Eliminations & other | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	7	4	10	7
Eliminations & other | Drilling
Segment Reporting Information [Line Items]
Revenue	45	49	89	104
Eliminations & other | Production
Segment Reporting Information [Line Items]
Revenue	2	1	1	2
Eliminations & other | Cameron
Segment Reporting Information [Line Items]
Revenue	(2)	(26)	21	29
Eliminations & other | Other
Segment Reporting Information [Line Items]
Revenue	(17)	(23)	(33)	(31)
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	1,183	2,801	3,463	5,539
North America | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	165	242	365	458
North America | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	269	552	792	1,128
North America | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	408	1,419	1,475	2,792
North America | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	341	600	847	1,182
North America | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue		(12)	(16)	(21)
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	4,138	5,463	9,260	10,499
International | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	880	1,312	1,988	2,552
International | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	1,417	1,819	3,139	3,574
International | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,205	1,657	2,842	3,173
International | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	676	754	1,402	1,375
International | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue	$ (40)	$ (79)	$ (111)	$ (175)