XML 114 R98.htm IDEA: XBRL DOCUMENT
v3.22.4

Impairment and Other Charges - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($)
Cost of Revenue [Member] |
Restructuring Cost and Reserve [Line Items] |
Other asset impairment charges | $ 76
Selling, General and Administrative [Member] |
Restructuring Cost and Reserve [Line Items] |
Other asset impairment charges | 51
Russia Belarus And Ukraine [Member] |
Restructuring Cost and Reserve [Line Items] |
Other asset impairment charges | 127
Russia and Belarus [Member] |
Restructuring Cost and Reserve [Line Items] |
Accumulated other comprehensive income foreign currency translation loss | $ 51

X
- Definition Accumulated Other Comprehensive Income Foreign Currency Translation Loss + References No definition available. + Details
Name: | nov_AccumulatedOtherComprehensiveIncomeForeignCurrencyTranslationLoss
Namespace Prefix: | nov_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
Name: | us-gaap_OtherAssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=nov_RussiaBelarusAndUkraineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=nov_RussiaAndBelarusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |