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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, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 32,917	$ 32,815	$ 30,440
Operating Segments
Segment Reporting Information [Line Items]
Revenue	32,917	32,815	30,440
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	225	385	511
North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	10,843	11,984	9,487
International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	21,849	20,446
Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue	6,312	6,173
Reservoir Characterization | Operating Segments
Segment Reporting Information [Line Items]
Revenue	6,312	6,173	6,476
Reservoir Characterization | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	22	150
Reservoir Characterization | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	1,027	992
Reservoir Characterization | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,263	5,031
Drilling
Segment Reporting Information [Line Items]
Revenue	9,721	9,250
Drilling | Operating Segments
Segment Reporting Information [Line Items]
Revenue	9,721	9,250	8,392
Drilling | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	207	234
Drilling | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,220	2,332
Drilling | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	7,294	6,684
Production
Segment Reporting Information [Line Items]
Revenue	11,987	12,394
Production | Operating Segments
Segment Reporting Information [Line Items]
Revenue	11,987	12,394	10,630
Production | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	4	5
Production | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,336	6,312
Production | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	6,647	6,077
Cameron
Segment Reporting Information [Line Items]
Revenue	5,336	5,520
Cameron | Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,336	5,520	$ 5,524
Cameron | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	43	86
Cameron | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,318	2,427
Cameron | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	2,975	3,007
Other
Segment Reporting Information [Line Items]
Revenue	(439)	(522)
Other | Eliminations & other
Segment Reporting Information [Line Items]
Revenue	(51)	(90)
Other | North America | Operating Segments
Segment Reporting Information [Line Items]
Revenue	(58)	(79)
Other | International | Operating Segments
Segment Reporting Information [Line Items]
Revenue	$ (330)	$ (353)

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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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+ References

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