Cover - USD ($) $ / shares in Units, $ in Billions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Apr. 23, 2026 |
Jun. 30, 2025 |
|
| Document Information [Line Items] | |||
| Document Type | 10-K/A | ||
| Amendment Flag | true | ||
| Document Annual Report | true | ||
| Current Fiscal Year End Date | --12-31 | ||
| Document Period End Date | Dec. 31, 2025 | ||
| Document Fiscal Year Focus | 2025 | ||
| Document Fiscal Period Focus | FY | ||
| Document Transition Report | false | ||
| Entity Registrant Name | LITHIUM AMERICAS CORP. | ||
| Entity Central Index Key | 0001966983 | ||
| Entity File Number | 001-41788 | ||
| Entity Incorporation, State or Country Code | A1 | ||
| Entity Tax Identification Number | 00-0000000 | ||
| Entity Address, Address Line One | 3260 - 666 Burrard Street | ||
| Entity Address, City or Town | Vancouver | ||
| Entity Address, State or Province | BC | ||
| Entity Address, Postal Zip Code | V6C 2X8 | ||
| City Area Code | 778 | ||
| Local Phone Number | 656-5820 | ||
| Title of 12(b) Security | Common Shares, no par value per share | ||
| Entity Listing, Par Value Per Share | $ 0 | ||
| Trading Symbol | LAC | ||
| Security Exchange Name | NYSE | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity Small Business | true | ||
| Entity Emerging Growth Company | true | ||
| Entity Ex Transition Period | false | ||
| ICFR Auditor Attestation Flag | false | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 0.6 | ||
| Entity Common Stock, Shares Outstanding | 348,821,406 | ||
| Amendment Description | Lithium Americas Corp. (“LAC” or the “Company”) is filing this Amendment No. 1 on Form 10-K/A for the year ended December 31, 2025 (the “Form 10-K/A”) to amend our Annual Report on Form 10-K for the year ended December 31, 2025, originally filed with the Securities and Exchange Commission (the “SEC”) on March 19, 2026 (the “Original Form 10-K”). We are filing this Form 10-K/A to, among other things, present the information required by Part III of Form 10-K that was previously not included in the Original Form 10-K in reliance on General Instruction G.(3) to Form 10-K. The Company is hereby amending the Original Form 10-K as follows: On the cover page, (i) to delete the reference in the Original Form 10-K to the incorporation by reference of the Company’s definitive proxy statement for its 2026 annual meeting of stockholders (the “Annual Meeting”) and (ii) to update the date as of which the number of outstanding shares of the Company’s common stock is being provided; •To present the information required by Part III of Form 10-K, which information we originally indicated in the Original Form 10-K would be incorporated by reference in our definitive proxy statement to be delivered to our stockholders in connection with our Annual Meeting; and •To file new certifications of the Company’s principal executive officer and principal financial officer as Exhibits 31.3 and 31.4 to this Form 10-K/A under Item 15 of Part IV hereof, pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Because no financial statements have been included in this Form 10-K/A and this Form 10-K/A does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. Except as described above, no other changes have been made to the Original Form 10-K. This Form 10-K/A does not otherwise update information in the Original Form 10-K to reflect facts or events occurring subsequent to the filing date of the Original Form 10-K. This Form 10-K/A should be read in conjunction with the Original Form 10-K and with any of our filings made with the SEC subsequent to filing of the Original Form 10-K. |