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Revenue - Summary of Disaggregate Revenue by Destinations (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Disaggregate revenue	$ 2,126	$ 2,154	$ 6,198	$ 6,055
Operating Segments [Member] | Wellbore Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	793	847	2,450	2,351
Operating Segments [Member] | Completion & Production Solutions [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	728	735	1,972	2,143
Operating Segments [Member] | Rig Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	649	637	1,923	1,771
Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	(44)	(65)	(147)	(210)
Continental [Member] | Intersubsegment Eliminations [Member] | Operating Segments [Member] | Wellbore Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	16	16	46	48
Continental [Member] | Intersubsegment Eliminations [Member] | Operating Segments [Member] | Completion & Production Solutions [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	13	20	46	62
Continental [Member] | Intersubsegment Eliminations [Member] | Operating Segments [Member] | Rig Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	15	29	55	100
Continental [Member] | Intersubsegment Eliminations [Member] | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	(44)	(65)	(147)	(210)
Continental [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	830	1,001	2,570	2,777
Continental [Member] | North America [Member] | Operating Segments [Member] | Wellbore Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	422	469	1,343	1,333
Continental [Member] | North America [Member] | Operating Segments [Member] | Completion & Production Solutions [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	295	343	846	977
Continental [Member] | North America [Member] | Operating Segments [Member] | Rig Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	113	189	381	467
Continental [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	1,296	1,153	3,628	3,278
Continental [Member] | International [Member] | Operating Segments [Member] | Wellbore Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	355	362	1,061	970
Continental [Member] | International [Member] | Operating Segments [Member] | Completion & Production Solutions [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	420	372	1,080	1,104
Continental [Member] | International [Member] | Operating Segments [Member] | Rig Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	521	419	1,487	1,204
Land and Offshore [Member] | Intersubsegment Eliminations [Member] | Operating Segments [Member] | Wellbore Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	16	16	46	48
Land and Offshore [Member] | Intersubsegment Eliminations [Member] | Operating Segments [Member] | Completion & Production Solutions [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	13	20	46	62
Land and Offshore [Member] | Intersubsegment Eliminations [Member] | Operating Segments [Member] | Rig Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	15	29	55	100
Land and Offshore [Member] | Intersubsegment Eliminations [Member] | Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	(44)	(65)	(147)	(210)
Land and Offshore [Member] | Land Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	1,246	1,434	3,837	4,012
Land and Offshore [Member] | Land Destination [Member] | Operating Segments [Member] | Wellbore Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	616	707	1,960	1,950
Land and Offshore [Member] | Land Destination [Member] | Operating Segments [Member] | Completion & Production Solutions [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	479	521	1,340	1,476
Land and Offshore [Member] | Land Destination [Member] | Operating Segments [Member] | Rig Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	151	206	537	586
Land and Offshore [Member] | Offshore Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	880	720	2,361	2,043
Land and Offshore [Member] | Offshore Destination [Member] | Operating Segments [Member] | Wellbore Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	161	124	444	353
Land and Offshore [Member] | Offshore Destination [Member] | Operating Segments [Member] | Completion & Production Solutions [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	236	194	586	605
Land and Offshore [Member] | Offshore Destination [Member] | Operating Segments [Member] | Rig Technologies [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	$ 483	$ 402	$ 1,331	$ 1,085

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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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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