XML 108 R92.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Business Segments and Geographic Areas - Business Segments (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 2,722 | $ 3,306 | $ 3,909 | $ 4,820 | $ 5,709 | $ 5,587 | $ 5,255 | $ 4,889 | $ 14,757 | $ 21,440 | $ 19,221
Operating profit (loss) |  |  |  |  |  |  |  |  | (390) | 3,613 | 3,199
Capital expenditures |  |  |  |  |  |  |  |  | 453 | 699 | 614
Depreciation and amortization |  |  |  |  |  |  |  |  | 747 | 778 | 738
Goodwill | 6,980 |  |  |  | 8,539 |  |  |  | 6,980 | 8,539 | 9,049
Total assets | 26,725 |  |  |  | 33,562 |  |  |  | 26,725 | 33,562 | 34,812
Rig Systems [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill | 1,232 |  |  |  | 1,236 |  |  |  | 1,232 | 1,236 | 1,279
Rig Aftermarket [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill | 877 |  |  |  | 877 |  |  |  | 877 | 877 | 906
Wellbore Technologies [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill | 2,874 |  |  |  | 4,357 |  |  |  | 2,874 | 4,357 | 4,425
Completion & Production Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill | 1,997 |  |  |  | 2,069 |  |  |  | 1,997 | 2,069 | 2,106
Operating Segments [Member] | Rig Systems [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 6,964 | 9,848 | 8,450
Operating profit (loss) |  |  |  |  |  |  |  |  | 1,206 | 1,996 | 1,594
Capital expenditures |  |  |  |  |  |  |  |  | 81 | 133 | 61
Depreciation and amortization |  |  |  |  |  |  |  |  | 96 | 88 | 82
Goodwill | 1,232 |  |  |  | 1,236 |  |  |  | 1,232 | 1,236 | 1,279
Total assets | 6,772 |  |  |  | 8,052 |  |  |  | 6,772 | 8,052 | 7,654
Operating Segments [Member] | Rig Aftermarket [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 2,515 | 3,222 | 2,692
Operating profit (loss) |  |  |  |  |  |  |  |  | 605 | 882 | 729
Capital expenditures |  |  |  |  |  |  |  |  | 10 | 12 | 24
Depreciation and amortization |  |  |  |  |  |  |  |  | 30 | 27 | 26
Goodwill | 877 |  |  |  | 877 |  |  |  | 877 | 877 | 906
Total assets | 2,455 |  |  |  | 2,789 |  |  |  | 2,455 | 2,789 | 2,475
Operating Segments [Member] | Wellbore Technologies [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 3,718 | 5,722 | 5,211
Operating profit (loss) |  |  |  |  |  |  |  |  | (1,613) | 937 | 915
Capital expenditures |  |  |  |  |  |  |  |  | 180 | 262 | 226
Depreciation and amortization |  |  |  |  |  |  |  |  | 400 | 439 | 420
Goodwill | 2,874 |  |  |  | 4,357 |  |  |  | 2,874 | 4,357 | 4,425
Total assets | 8,766 |  |  |  | 11,687 |  |  |  | 8,766 | 11,687 | 11,862
Operating Segments [Member] | Completion & Production Solutions [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 3,365 | 4,645 | 4,309
Operating profit (loss) |  |  |  |  |  |  |  |  | 161 | 690 | 613
Capital expenditures |  |  |  |  |  |  |  |  | 87 | 184 | 212
Depreciation and amortization |  |  |  |  |  |  |  |  | 221 | 224 | 210
Goodwill | 1,997 |  |  |  | 2,069 |  |  |  | 1,997 | 2,069 | 2,106
Total assets | 5,916 |  |  |  | 7,072 |  |  |  | 5,916 | 7,072 | 7,287
Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | (1,805) | (1,997) | (1,441)
Operating profit (loss) |  |  |  |  |  |  |  |  | (749) | (892) | (652)
Capital expenditures |  |  |  |  |  |  |  |  | 95 | 108 | 91
Total assets | $ 2,816 |  |  |  | $ 3,962 |  |  |  | $ 2,816 | $ 3,962 | 3,351
Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  |  | 333
Total assets |  |  |  |  |  |  |  |  |  |  | $ 2,183

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
Name: | us-gaap_DepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
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_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_OperatingSegmentsMember
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: |

X
- Details
Name: | us-gaap_StatementOperatingActivitiesSegmentAxis=us-gaap_SegmentDiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |