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Segment Information - Summary of North America and International Revenue Disaggregated by Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenue	$ 32,815	$ 30,440	$ 27,810
Operating Segments
Segment Reporting Information [Line Items]
Revenue	32,815	30,440	27,810
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	385	511	278
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	11,984	9,487	6,665
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	20,446
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	6,526
Reservoir Characterization | Operating Segments
Segment Reporting Information [Line Items]
Revenue	6,526	6,795	6,660
Reservoir Characterization | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	467
Reservoir Characterization | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	992
Reservoir Characterization | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,067
Drilling
Segment Reporting Information [Line Items]
Revenue	9,250
Drilling | Operating Segments
Segment Reporting Information [Line Items]
Revenue	9,250	8,392	8,561
Drilling | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	234
Drilling | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,332
Drilling | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	6,684
Production
Segment Reporting Information [Line Items]
Revenue	12,394
Production | Operating Segments
Segment Reporting Information [Line Items]
Revenue	12,394	10,630	8,792
Production | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	5
Production | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	6,312
Production | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	6,077
Cameron
Segment Reporting Information [Line Items]
Revenue	5,167
Cameron | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,167	$ 5,205	$ 4,211
Cameron | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	80
Cameron | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,316
Cameron | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,771
Other
Segment Reporting Information [Line Items]
Revenue	(522)
Other | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	(401)
Other | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	32
Other | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	$ (153)

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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+ References

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