XML 19 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.8

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)

X
- Definition Net Income Loss Prior To Separation + References No definition available. + Details
Name: | dnow_NetIncomeLossPriorToSeparation
Namespace Prefix: | dnow_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net Transfer Of Assets And Liabilities With Parent Company + References No definition available. + Details
Name: | dnow_NetTransferOfAssetsAndLiabilitiesWithParentCompany
Namespace Prefix: | dnow_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net Transfers From To Parent + References No definition available. + Details
Name: | dnow_NetTransfersFromToParent
Namespace Prefix: | dnow_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | dnow_NonCashAdjustmentsAbstract
Namespace Prefix: | dnow_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dnow_RelatedPartyTransactionAbstract
Namespace Prefix: | dnow_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References No definition available. + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from parent as a source of financing that is recorded as additional paid in capital. + References 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 + Details
Name: | us-gaap_ProceedsFromContributionsFromParent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration