EQUITY (Details)	1 Months Ended							12 Months Ended
	Mar. 31, 2021 USD ($) $ / shares	Oct. 31, 2020 USD ($) $ / shares	Aug. 31, 2020 USD ($)	Jun. 30, 2020 USD ($) $ / shares shares	Jul. 31, 2019 USD ($)	Feb. 28, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2019 USD ($)	Dec. 31, 2021 $ / shares shares	Sep. 24, 2021 USD ($)	Aug. 30, 2021 $ / shares	May 17, 2021 shares	Jul. 31, 2019 $ / shares	Feb. 28, 2019 $ / shares	Dec. 31, 2018 $ / shares
Redomiciliation [Abstract]
CDI exchange ratio														0.01
ADS conversion ratio											100
Common stock, shares outstanding (in shares)				10,356,762				15,764,533	10,356,762		15,894,395			15,764,533
Common stock, shares authorized (in shares)				100,000,000				100,000,000	100,000,000		100,000,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.0001				$ 0.0001	$ 0.0001		$ 0.0001
Preferred stock, shares authorized (in shares)											10,000,000
Preferred stock, par value (in dollars per share) | $ / shares											$ 0.0001
Preferred stock, shares outstanding (in shares)											0
Sale of stock, offering capacity | $												$ 500,000,000
Issuance of common stock, net | $								$ 174,964,132	$ 25,108,988	$ 8,321,894
Australia Share Placements And US Public Offerings
Redomiciliation [Abstract]
Issuance of common stock, net | $	$ 1,750,000	$ 2,300,000	$ 1,200,000	$ 2,065,000	$ 1,450,000	$ 34,091	$ 1,075,909	$ 12,819,429	$ 2,326,270	$ 509,865
Shares issued, price per share (in USD per share or AUD per share) | (per share)	$ 70.00	$ 25.00		$ 6.30					$ 6.30				$ 9.00		$ 14.50	$ 11.00	$ 11.00
Piedmont Lithium Limited
Redomiciliation [Abstract]
CDI exchange ratio														1
ADS exchange ratio														1
ADS conversion ratio														100
Common stock, shares outstanding (in shares)														1,574,597,320