Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Revenue	$ 8,269	$ 8,303	$ 16,149	$ 16,131
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,649	1,640	3,192	3,199
Drilling
Segment Reporting Information [Line Items]
Revenue	2,421	2,234	4,808	4,360
Production
Segment Reporting Information [Line Items]
Revenue	3,077	3,253	5,967	6,209
Cameron
Segment Reporting Information [Line Items]
Revenue	1,237	1,295	2,412	2,605
Other
Segment Reporting Information [Line Items]
Revenue	(115)	(119)	(230)	(242)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	8,269	8,303	16,149	16,131
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,649	1,640	3,192	3,199
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	2,421	2,234	4,808	4,360
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	3,077	3,253	5,967	6,209
Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	1,237	1,295	2,412	2,605
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	5	99	111	209
Eliminations & other | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	91	134	166	272
Eliminations & other | Drilling
Segment Reporting Information [Line Items]
Revenue	49	54	104	103
Eliminations & other | Production
Segment Reporting Information [Line Items]
Revenue	1	2	2	3
Eliminations & other | Cameron
Segment Reporting Information [Line Items]
Revenue	(23)	24	25	48
Eliminations & other | Other
Segment Reporting Information [Line Items]
Revenue	(113)	(115)	(186)	(217)
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,801	3,139	5,539	5,974
North America | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	242	269	458	491
North America | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	553	568	1,130	1,132
North America | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,419	1,695	2,792	3,195
North America | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	558	593	1,118	1,144
North America | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue	29	14	41	12
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,463	5,065	10,499	9,948
International | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,316	1,237	2,568	2,436
International | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	1,819	1,612	3,574	3,125
International | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,657	1,556	3,173	3,011
International | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	702	678	1,269	1,413
International | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue	$ (31)	$ (18)	$ (85)	$ (37)