XML 31 R43.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Business Segments - Business Segments (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 3,909 | $ 5,255 | $ 8,729 | $ 10,144
Total Operating Profit | $ 438 | $ 913 | $ 1,008 | $ 1,712
Percentage as of operating profit to revenue | 11.20% | 17.40% | 11.50% | 16.90%
Operating Segments [Member] | Rig Systems [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 1,930 | $ 2,372 | $ 4,453 | $ 4,628
Total Operating Profit | $ 392 | $ 501 | $ 840 | $ 952
Percentage as of operating profit to revenue | 20.30% | 21.10% | 18.90% | 20.60%
Operating Segments [Member] | Rig Aftermarket [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 657 | $ 785 | $ 1,376 | $ 1,535
Total Operating Profit | $ 143 | $ 217 | $ 334 | $ 408
Percentage as of operating profit to revenue | 21.80% | 27.60% | 24.30% | 26.60%
Operating Segments [Member] | Wellbore Technologies [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 956 | $ 1,446 | $ 2,127 | $ 2,724
Total Operating Profit | $ 38 | $ 263 | $ 117 | $ 484
Percentage as of operating profit to revenue | 4.00% | 18.20% | 5.50% | 17.80%
Operating Segments [Member] | Completion & Production Solutions [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ 873 | $ 1,127 | $ 1,821 | $ 2,129
Total Operating Profit | $ 78 | $ 157 | $ 157 | $ 294
Percentage as of operating profit to revenue | 8.90% | 13.90% | 8.60% | 13.80%
Unallocated Expenses and Eliminations [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Revenue | $ (507) | $ (475) | $ (1,048) | $ (872)
Total Operating Profit | $ (213) | $ (225) | $ (440) | $ (426)

X
- Definition Percentage as of operating profit to revenue. + References No definition available. + Details
Name: | nov_PercentageAsOfOperatingProfitToRevenue
Namespace Prefix: | nov_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=nov_RigSystemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=nov_RigAfterMarketMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=nov_WellboreTechnologiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=nov_CompletionAndProductionSolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |