EQUITY (Details)	1 Months Ended						12 Months Ended
	Nov. 30, 2023 USD ($) $ / shares shares	Feb. 28, 2023 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2021 shares	Oct. 31, 2020 USD ($) $ / shares	Aug. 31, 2020 USD ($)	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Jun. 30, 2021 USD ($)	Sep. 24, 2021 USD ($)	May 17, 2021 shares	May 16, 2021 shares	Aug. 31, 2020 $ / shares
Class of Stock [Line Items]
Common stock, shares outstanding (in shares) | shares							19,272,000	18,073,000			15,764,533	1,574,597,320
Common stock, shares authorized (in shares) | shares							100,000,000	100,000,000
Common stock, par value (in dollars per share) | $ / shares							$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares) | shares							10,000,000
Preferred stock, par value (in dollars per share) | $ / shares							$ 0.0001
Preferred stock, shares outstanding (in shares) | shares							0
Stock issuance costs									$ 12,800,000
Sale of stock, offering capacity										$ 500,000,000
Issuance of common stock, net							$ 72,921,000	$ 122,059,000	$ 174,965,000
Shares issued, price per share (in USD per share) | $ / shares			$ 70.00
Issuance of common stock, net (in shares) | shares				1,750,000
Advance Of Funding Obligations To Killick Lithium Project
Class of Stock [Line Items]
Number of shares sold (in shares) | shares	62,638
Sale of stock, price (in dollars per share) | $ / shares	$ 29.32
Stock issuance costs	$ 0
Shelf Registration Program
Class of Stock [Line Items]
Number of shares sold (in shares) | shares			2,012,500
Sale of stock, price (in dollars per share) | $ / shares			$ 65.00
Proceeds from sale of stock			$ 130,800,000
Sale of stock, offering capacity			500,000,000
Remaining offering capacity							$ 369,200,000
U.S. Public Offering Program
Class of Stock [Line Items]
Stock issuance costs			$ 8,800,000
Australia Share Placements And US Public Offerings
Class of Stock [Line Items]
Issuance of common stock, net					$ 2,300,000	$ 1,200,000
Shares issued, price per share (in USD per share) | (per share)					$ 25.00								$ 9.00
Vinland Lithium | Advance Of Funding Obligations To Killick Lithium Project
Class of Stock [Line Items]
Sale of stock, percentage of ownership after transaction	62.50%
LG Chem
Class of Stock [Line Items]
Number of shares sold (in shares) | shares		1,096,535
Sale of stock, price (in dollars per share) | $ / shares		$ 68.40
Stock issuance costs		$ 3,900,000
Proceeds from sale of stock		$ 75,000,000
Piedmont Lithium
Class of Stock [Line Items]
ADS conversion ratio											100
Piedmont Australia
Class of Stock [Line Items]
Redomicilation, number of CDI to receive per ordinary share | shares							1
Redomicilation, number of common stock to receive per ADS | shares							1