Document and Entity Information - USD ($) $ in Billions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Feb. 06, 2026 |
Jun. 30, 2025 |
|
| Cover [Abstract] | |||
| Document Type | 10-K | ||
| Amendment Flag | false | ||
| Document Period End Date | Dec. 31, 2025 | ||
| Document Fiscal Year Focus | 2025 | ||
| Document Fiscal Period Focus | FY | ||
| Trading Symbol | NOV | ||
| Entity Registrant Name | NOV INC. | ||
| Entity Central Index Key | 0001021860 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity Well-known Seasoned Issuer | Yes | ||
| Entity Current Reporting Status | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Common Stock, Shares Outstanding | 360,404,544 | ||
| Entity Public Float | $ 4.6 | ||
| Entity Small Business | false | ||
| Entity Emerging Growth Company | false | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Entity Shell Company | false | ||
| Entity Interactive Data Current | Yes | ||
| ICFR Auditor Attestation Flag | true | ||
| Title of 12(b) Security | Common Stock, par value $0.01 per share | ||
| Security Exchange Name | NYSE | ||
| Entity File Number | 1-12317 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Tax Identification Number | 76-0475815 | ||
| Entity Address, Address Line One | 10353 Richmond Avenue | ||
| Entity Address, City or Town | Houston | ||
| Entity Address, State or Province | TX | ||
| Entity Address, Postal Zip Code | 77042-4103 | ||
| City Area Code | 346 | ||
| Local Phone Number | 223-3000 | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Documents Incorporated by Reference [Text Block] | Portions of the Proxy Statement in connection with the 2026 Annual Meeting of Stockholders are incorporated in Part III of this report. |
||
| Auditor Firm ID | 42 | ||
| Auditor Name | Ernst & Young LLP | ||
| Auditor Location | Houston, Texas | ||
| Auditor Opinion | Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of NOV Inc. (the Company) as of December 31, 2025 and 2024, the related consolidated statements of income, comprehensive income, cash flows, and stockholders’ equity for each of the three years in the period ended December 31, 2025, and the related notes and financial statement schedule listed in the Index at Item 15(2) (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the consolidated financial position of the Company at December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025, in conformity with U.S. generally accepted accounting principles. We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated February 12, 2026, expressed an unqualified opinion thereon. |