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Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenue	$ 8,541	$ 8,504	$ 24,689	$ 24,636
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,651	1,587	4,669	4,602
Drilling
Segment Reporting Information [Line Items]
Revenue	2,470	2,429	7,279	6,789
Production
Segment Reporting Information [Line Items]
Revenue	3,153	3,249	9,120	9,458
Cameron
Segment Reporting Information [Line Items]
Revenue	1,363	1,386	3,949	4,175
Other
Segment Reporting Information [Line Items]
Revenue	(96)	(147)	(328)	(388)
Operating Segments
Segment Reporting Information [Line Items]
Revenue	8,541	8,504	24,689	24,636
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,651	1,587	4,669	4,602
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	2,470	2,429	7,279	6,789
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	3,153	3,249	9,120	9,458
Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	1,363	1,386	3,949	4,175
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	62	100	171	310
Eliminations & other | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	5	33	15	141
Eliminations & other | Drilling
Segment Reporting Information [Line Items]
Revenue	56	68	161	172
Eliminations & other | Production
Segment Reporting Information [Line Items]
Revenue	1	1	2	4
Eliminations & other | Cameron
Segment Reporting Information [Line Items]
Revenue	2	29	32	83
Eliminations & other | Other
Segment Reporting Information [Line Items]
Revenue	(2)	(31)	(39)	(90)
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,850	3,189	8,389	9,164
North America | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	299	242	756	732
North America | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	553	601	1,683	1,733
North America | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,426	1,724	4,218	4,919
North America | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	589	644	1,771	1,842
North America | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue	(17)	(22)	(39)	(62)
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,629	5,215	16,129	15,162
International | Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	1,347	1,312	3,898	3,729
International | Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue	1,861	1,760	5,435	4,884
International | Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue	1,726	1,524	4,900	4,535
International | Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue	772	713	2,146	2,250
International | Operating Segments | Other
Segment Reporting Information [Line Items]
Revenue	$ (77)	$ (94)	$ (250)	$ (236)

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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