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Segment Information - Summary of North America and International Revenue Disaggregated by Group (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue	$ 8,303	$ 7,462	$ 16,131	$ 14,356
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,636	1,759	3,192	3,377
Drilling
Segment Reporting Information [Line Items]
Revenue	2,234	2,107	4,360	4,092
Production
Segment Reporting Information [Line Items]
Revenue	3,257	2,496	6,216	4,683
Cameron
Segment Reporting Information [Line Items]
Revenue	1,295	1,265	2,605	2,494
Other
Segment Reporting Information [Line Items]
Revenue	(119)	(165)	(242)	(290)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	8,303	7,462	16,131	14,356
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,636	1,759	3,192	3,377
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	2,234	2,107	4,360	4,092
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	3,257	2,496	6,216	4,683
Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	1,295	1,265	2,605	2,494
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	100	124	209	224
Eliminations & other | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	134	170	272	290
Eliminations & other | Drilling
Segment Reporting Information [Line Items]
Revenue	54	57	103	118
Eliminations & other | Production
Segment Reporting Information [Line Items]
Revenue	2	(11)	3	(14)
Eliminations & other | Cameron
Segment Reporting Information [Line Items]
Revenue	(23)	3	(36)	(6)
Eliminations & other | Other
Segment Reporting Information [Line Items]
Revenue	(67)	(95)	(133)	(164)
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	3,139	2,202	5,974	4,074
North America | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	269	217	491	448
North America | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	568	485	1,132	940
North America | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,695	1,032	3,195	1,770
North America | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	611	474	1,180	919
North America | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue	(4)	(6)	(24)	(3)
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,064	5,136	9,948	10,058
International | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,233	1,372	2,429	2,639
International | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	1,612	1,565	3,125	3,034
International | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,560	1,475	3,018	2,927
International | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	707	788	1,461	1,581
International | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue	$ (48)	$ (64)	$ (85)	$ (123)

X

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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