XML 54 R41.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Business Segments - Business Segments (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 1,646 | $ 3,306 | $ 5,559 | $ 12,035
Total operating profit (loss) | $ (1,186) | $ 234 | $ (1,645) | $ 1,242
Percentage as of operating profit (loss) to revenue | (72.10%) | 7.10% | (29.60%) | 10.30%
Operating Segments [Member] | Rig Systems [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 470 | $ 1,496 | $ 1,960 | $ 5,949
Total operating profit (loss) | $ (962) | $ 278 | $ (888) | $ 1,176
Percentage as of operating profit (loss) to revenue | (204.70%) | 18.60% | (45.30%) | 19.80%
Operating Segments [Member] | Rig Aftermarket [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 322 | $ 570 | $ 1,077 | $ 1,946
Total operating profit (loss) | $ 72 | $ 157 | $ 203 | $ 514
Percentage as of operating profit (loss) to revenue | 22.40% | 27.50% | 18.80% | 26.40%
Operating Segments [Member] | Wellbore Technologies [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 526 | $ 834 | $ 1,668 | $ 2,961
Total operating profit (loss) | $ (94) | $ (2) | $ (331) | $ 141
Percentage as of operating profit (loss) to revenue | (17.90%) | (0.20%) | (19.80%) | 4.80%
Operating Segments [Member] | Completion & Production Solutions [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ 543 | $ 798 | $ 1,639 | $ 2,619
Total operating profit (loss) | $ (61) | $ 10 | $ (132) | $ 183
Percentage as of operating profit (loss) to revenue | (11.20%) | 1.30% | (8.10%) | 7.00%
Eliminations and Corporate Costs [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenue | $ (215) | $ (392) | $ (785) | $ (1,440)
Total operating profit (loss) | $ (141) | $ (209) | $ (497) | $ (772)

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=63488584&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: |