Subsequent Events	3 Months Ended
Mar. 31, 2025
Subsequent Events [Abstract]
Subsequent Events	15. SUBSEQUENT EVENTS Orion Agreement and FID On April 1, 2025, the Company closed the strategic investment of $250 million from fund entities managed by Orion Resource Partners LP (collectively, “Orion”), for the development and construction of Phase 1 of Thacker Pass (“Orion Investment”). Orion has purchased senior unsecured convertible notes in the aggregate and principal amount of $195 million (the “Notes”) and entered into a Production Payment Agreement (“PPA”) whereby Orion paid the Company $25 million in exchange for payments corresponding to the minerals processed and gross revenue generated by Thacker Pass (together, the Notes and PPA represent an aggregate initial investment of $220 million). Orion has committed to purchase an additional $30 million in aggregate principal amount Notes within two years (the "Delayed Draw Notes"), subject to the satisfaction of certain conditions precedent, upon request by the Company. The Notes will mature on April 1, 2030 and bear an initial conversion price of $3.78 per share, which represents a 43% premium to Lithium Americas’ 5-day VWAP on the New York Stock Exchange ended on March 5, 2025. The Company will initially pay interest on the Notes in-kind or in cash at a rate of 9.875% per annum until the maturity of the Notes. Under the terms of the PPA, Orion will receive fixed payments of $128 per tonne ($152 per tonne assuming draw of the Delayed Draw Notes) of the total lithium produced each year at Thacker Pass for a period of 72 quarters after first production. Orion will receive additional variable payments of 0.96% of total gross revenue (1.14% of total gross revenue assuming draw of the Delayed Draw Notes) for the life of the mine. Both fixed and variable payments will only apply to the first 41,500 tonnes of lithium produced each year and are subject to certain adjustments relating to total Phase 1 project costs. The production payments are also subject to certain adjustments related to the tonnage of battery-grade lithium carbonate equivalent sold. The variable payments are also subject to certain adjustments related to the future price of lithium. Contemporaneously with closing the strategic investment with Orion, LAC and GM announced FID for Thacker Pass Phase 1 and made cash contributions to Lithium Nevada Ventures of $191,600 and $100,000, respectively, pursuant to the GM Investment Agreement.

Subsequent Events

3 Months Ended

Mar. 31, 2025

15.

SUBSEQUENT EVENTS

Orion Agreement and FID

On April 1, 2025, the Company closed the strategic investment of $250 million from fund entities managed by Orion Resource Partners LP (collectively, “Orion”), for the development and construction of Phase 1 of Thacker Pass (“Orion Investment”).

Orion has purchased senior unsecured convertible notes in the aggregate and principal amount of $195 million (the “Notes”) and entered into a Production Payment Agreement (“PPA”) whereby Orion paid the Company $25 million in exchange for payments corresponding to the minerals processed and gross revenue generated by Thacker Pass (together, the Notes and PPA represent an aggregate initial investment of $220 million). Orion has committed to purchase an additional $30 million in aggregate principal amount Notes within two years (the "Delayed Draw Notes"), subject to the satisfaction of certain conditions precedent, upon request by the Company.

The Notes will mature on April 1, 2030 and bear an initial conversion price of $3.78 per share, which represents a 43% premium to Lithium Americas’ 5-day VWAP on the New York Stock Exchange ended on March 5, 2025. The Company will initially pay interest on the Notes in-kind or in cash at a rate of 9.875% per annum until the maturity of the Notes. Under the terms of the PPA, Orion will receive fixed payments of $128 per tonne ($152 per tonne assuming draw of the Delayed Draw Notes) of the total lithium produced each year at Thacker Pass for a period of 72 quarters after first production. Orion will receive additional variable payments of 0.96% of total gross revenue (1.14% of total gross revenue assuming draw of the Delayed Draw Notes) for the life of the mine. Both fixed and variable payments will only apply to the first 41,500 tonnes of lithium produced each year and are subject to certain adjustments relating to total Phase 1 project costs. The production payments are also subject to certain adjustments related to the tonnage of battery-grade lithium carbonate equivalent sold. The variable payments are also subject to certain adjustments related to the future price of lithium.

Contemporaneously with closing the strategic investment with Orion, LAC and GM announced FID for Thacker Pass Phase 1 and made cash contributions to Lithium Nevada Ventures of $191,600 and $100,000, respectively, pursuant to the GM Investment Agreement.