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Revenue Recognition - Summary of Disaggregate Revenue by Destinations (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Continental [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	$ 1,795	$ 1,741
Continental [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	842	648
Continental [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	953	1,093
Land and Offshore [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	1,795	1,741
Land and Offshore [Member] | Land Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	1,201	1,000
Land and Offshore [Member] | Offshore Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	594	741
Operating Segments [Member] | Wellbore Technologies [Member] | Continental [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	711	555
Operating Segments [Member] | Wellbore Technologies [Member] | Continental [Member] | Intersubsegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	14	12
Operating Segments [Member] | Wellbore Technologies [Member] | Continental [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	415	295
Operating Segments [Member] | Wellbore Technologies [Member] | Continental [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	282	248
Operating Segments [Member] | Wellbore Technologies [Member] | Land and Offshore [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	711	555
Operating Segments [Member] | Wellbore Technologies [Member] | Land and Offshore [Member] | Intersubsegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	14	12
Operating Segments [Member] | Wellbore Technologies [Member] | Land and Offshore [Member] | Land Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	583	436
Operating Segments [Member] | Wellbore Technologies [Member] | Land and Offshore [Member] | Offshore Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	114	107
Operating Segments [Member] | Completion & Production Solutions [Member] | Continental [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	670	648
Operating Segments [Member] | Completion & Production Solutions [Member] | Continental [Member] | Intersubsegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	20	13
Operating Segments [Member] | Completion & Production Solutions [Member] | Continental [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	292	233
Operating Segments [Member] | Completion & Production Solutions [Member] | Continental [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	358	402
Operating Segments [Member] | Completion & Production Solutions [Member] | Land and Offshore [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	670	648
Operating Segments [Member] | Completion & Production Solutions [Member] | Land and Offshore [Member] | Intersubsegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	20	13
Operating Segments [Member] | Completion & Production Solutions [Member] | Land and Offshore [Member] | Land Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	446	403
Operating Segments [Member] | Completion & Production Solutions [Member] | Land and Offshore [Member] | Offshore Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	204	232
Operating Segments [Member] | Rig Technologies [Member] | Continental [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	483	582
Operating Segments [Member] | Rig Technologies [Member] | Continental [Member] | Intersubsegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	35	19
Operating Segments [Member] | Rig Technologies [Member] | Continental [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	135	120
Operating Segments [Member] | Rig Technologies [Member] | Continental [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	313	443
Operating Segments [Member] | Rig Technologies [Member] | Land and Offshore [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	483	582
Operating Segments [Member] | Rig Technologies [Member] | Land and Offshore [Member] | Intersubsegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	35	19
Operating Segments [Member] | Rig Technologies [Member] | Land and Offshore [Member] | Land Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	172	161
Operating Segments [Member] | Rig Technologies [Member] | Land and Offshore [Member] | Offshore Destination [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	276	402
Intersegment Eliminations [Member] | Continental [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	(69)	(44)
Intersegment Eliminations [Member] | Continental [Member] | Intersubsegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	(69)	(44)
Intersegment Eliminations [Member] | Land and Offshore [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	(69)	(44)
Intersegment Eliminations [Member] | Land and Offshore [Member] | Intersubsegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Disaggregate revenue	$ (69)	$ (44)

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045

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