Related Party Transactions - Schedule of Components of Changes in NOV Net Investment (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Related Party Transaction [Abstract]
Net contribution from (distributions to) NOV per the consolidated statements of changes in equity	$ 143	$ (111)
Non-cash adjustments:
Stock-based compensation	(3)
Net transfer of assets and liabilities from NOV	(8)
Less: Net income attributable to NOV net investment prior to the Separation	(58)	(113)
Net contribution from (distributions to) NOV per the consolidated statements of cash flows	$ 74	$ (224)

The cash inflow from parent as a source of financing that is recorded as additional paid in capital.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration