Cover Page |
12 Months Ended |
|---|---|
|
Dec. 31, 2025
shares
| |
| Document Information [Line Items] | |
| Document Type | 20-F |
| Amendment Flag | false |
| Document Period End Date | Dec. 31, 2025 |
| Document Fiscal Year Focus | 2025 |
| Document Fiscal Period Focus | FY |
| Trading Symbol | LAR |
| Entity Registrant Name | LITHIUM ARGENTINA AG |
| Entity Central Index Key | 0001440972 |
| Current Fiscal Year End Date | --12-31 |
| Entity Interactive Data Current | Yes |
| Entity Current Reporting Status | Yes |
| Entity Emerging Growth Company | false |
| Entity Well-known Seasoned Issuer | No |
| Entity Voluntary Filers | No |
| Entity Common Stock, Shares Outstanding | 162,406,904 |
| Title of 12(b) Security | Registered common shares, $0.01 par value per share |
| Security Exchange Name | NYSE |
| Entity File Number | 001-38350 |
| Entity Incorporation, State or Country Code | V8 |
| Entity Address, Address Line One | Dammstrasse 19 |
| Entity Address, City or Town | Zug |
| Entity Address, Country | CH |
| Entity Address, Postal Zip Code | 6300 |
| Document Annual Report | true |
| Document Registration Statement | false |
| Document Transition Report | false |
| Document Shell Company Report | false |
| Entity Filer Category | Accelerated Filer |
| ICFR Auditor Attestation Flag | true |
| Document Financial Statement Error Correction [Flag] | false |
| Document Accounting Standard | International Financial Reporting Standards |
| Entity Shell Company | false |
| Auditor Name | PricewaterhouseCoopers LLP |
| Auditor Firm ID | 271 |
| Auditor Location | Vancouver, Canada |
| Auditor Opinion | Opinions on the Financial Statements and Internal Control over Financial Reporting We have audited the accompanying consolidated statements of financial position of Lithium Argentina AG (formerly Lithium Americas (Argentina) Corp.) and its subsidiaries (together, the Company) as of December 31, 2025 and 2024, and the related consolidated statements of comprehensive (loss) income, of changes in equity and of cash flows for each of the three years in the period ended December 31, 2025, including the related notes (collectively referred to as the consolidated financial statements). We also have audited the Company’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control ‒ Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and its financial performance and its cash flows for each of the three years in the period ended December 31, 2025 in conformity with IFRS Accounting Standards as issued by the International Accounting Standards Board. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control ‒ Integrated Framework (2013) issued by the COSO. |
| Business Contact [Member] | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | 900 West Hastings Street |
| Entity Address, Address Line Two | Suite 310 |
| Entity Address, City or Town | Vancouver |
| Entity Address, State or Province | BC |
| Entity Address, Country | CA |
| Entity Address, Postal Zip Code | V6C 1E5 |
| City Area Code | 778 |
| Local Phone Number | 653-8092 |
| Contact Personnel Name | Alex Shulga |
| Contact Personnel Email Address | alex.shulga@lithium-argentina.com |