Schedule of Assets - Schedule of Assets (Held at End of Year) (Details) - EBP 001
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12 Months Ended |
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Dec. 31, 2025
USD ($)
shares
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Plan Name |
NOV Inc. 401(k) Plan
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| Entity Tax Identification Number |
76-0475815
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| EBP, Plan Number |
001
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| EBP, Asset Held for Investment, Total |
$ 1,850,213,334
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| Investment, Identifier [Axis]: BlackRock BlackRock High Yield Bond Portfolio |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
BlackRock [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 8,567,523
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| Investment, Identifier [Axis]: Dimensional Funds DFA Global Real Estate Securities |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Dimensional Funds [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
us-gaap:DefinedBenefitPlanRealEstateMember
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 3,790,933
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| Investment, Identifier [Axis]: Dimensional Funds DFA International Value |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Dimensional Funds [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
us-gaap:DefinedBenefitPlanRealEstateMember
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 47,680,282
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| Investment, Identifier [Axis]: Fidelity FIAM International Capital Appreciation Class B CIT |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Fidelity [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 53,575
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| Investment, Identifier [Axis]: Fidelity Fidelity International Bond Index Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Fidelity [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 3,029,735
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| Investment, Identifier [Axis]: Frost Funds Frost Total Return Bond Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Frost Funds [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 54,417,791
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| Investment, Identifier [Axis]: Geode Capital Management GEODE Capital Management - Spartan Mid Cap |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Geode Capital Management [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 82,115,130
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| Investment, Identifier [Axis]: Geode Capital Management GEODE Capital Management - Spartan Small Cap |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Geode Capital Management [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 6,436,272
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| Investment, Identifier [Axis]: Geode Capital Management GEODE Capital Management - Spartan Total Intl |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Geode Capital Management [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 17,908,339
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2010 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 6,100,666
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2015 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 2,477,276
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2020 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 28,602,573
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2025 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 36,294,437
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2030 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 147,220,776
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2035 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 86,372,765
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2040 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 169,455,728
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2045 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 91,103,692
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2050 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 156,716,757
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2055 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 72,528,752
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2060 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 33,228,801
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2065 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 15,017,348
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| Investment, Identifier [Axis]: Great Gray Trust Company Great Gray CIT 2070 Target Date Trust |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Great Gray Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Common Collective Trust [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 332,678
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| Investment, Identifier [Axis]: JP Morgan JPMCB Large Cap Growth |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
JP Morgan [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 183,171,154
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| Investment, Identifier [Axis]: JP Morgan Undiscovered Managers Behavioral Value Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
JP Morgan [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 18,138,222
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| Investment, Identifier [Axis]: National Oilwell Varco, Inc. 801,550 shares of common stock |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
National Oilwell Varco Inc [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
us-gaap-ebp:EmployeeBenefitPlanEmployerCommonStockMember
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 12,528,240
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| EBP, Investment, Number of Shares | shares |
801,550
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| Investment, Identifier [Axis]: Notes Receivable from Participants Various maturities and interest rates ranging from 3.25% to 9.50% |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Notes Receivable From Participants [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
us-gaap:SeniorNotesMember
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| EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution |
$ 34,688,598
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| Investment, Identifier [Axis]: SEI Trust Company Galliard Intermediate Core Fund A |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
SEI Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
us-gaap:FixedIncomeFundsMember
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 48,706,237
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| Investment, Identifier [Axis]: SEI Trust Company Galliard Intermediate Core Fund L |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
SEI Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
us-gaap:FixedIncomeFundsMember
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 48,214,841
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| Investment, Identifier [Axis]: SEI Trust Company Galliard Short Core Fund F |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
SEI Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
us-gaap:FixedIncomeFundsMember
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 59,263,889
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| Investment, Identifier [Axis]: SEI Trust Company Short Term Investment Fund II |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
SEI Trust Company [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 3,745,940
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| Investment, Identifier [Axis]: State Street State Street U.S. Bond Index Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
State Street [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 4,935,918
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| Investment, Identifier [Axis]: Van Kampen Funds Invesco Growth & Income Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Van Kampen Funds [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 59,313,502
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| Investment, Identifier [Axis]: Vanguard Vanguard Inflation Protected Securities Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Vanguard [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 10,401,856
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| Investment, Identifier [Axis]: Vanguard Vanguard Institutional Index Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Vanguard [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 211,252,526
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| Investment, Identifier [Axis]: Vanguard Vanguard Small Cap Growth Index Fund |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
|
| EBP, Investment, Issuer Name [Extensible Enumeration] |
Vanguard [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
Mutual Fund [Member]
|
| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 46,243,032
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| Investment, Identifier [Axis]: Various Self-directed brokerage accounts |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Investment, Issuer Name [Extensible Enumeration] |
Various [Member]
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| EBP, Investment, Current Value, Type [Extensible Enumeration] |
EBP, Self-Directed Brokerage Account [Member]
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| EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value |
$ 40,157,550
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| Minimum [Member] | Investment, Identifier [Axis]: Notes Receivable from Participants Various maturities and interest rates ranging from 3.25% to 9.50% |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Asset Held for Investment, Participant Loan, Interest Rate |
3.25%
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| Maximum [Member] | Investment, Identifier [Axis]: Notes Receivable from Participants Various maturities and interest rates ranging from 3.25% to 9.50% |
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| EBP, Schedule of Asset Held for Investment [Line Items] |
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| EBP, Asset Held for Investment, Participant Loan, Interest Rate |
9.50%
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