Supplemental Cash Flow Information - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended
	Oct. 31, 2019	Mar. 31, 2022	Mar. 31, 2021
Cash Flow Supplemental Disclosures [Line Items]
Capital expenditures		$ 231,698	$ 179,683
Non-cash transfer of 40% value of construction in progress of Kemerton plant to MRL		$ 65,100	43,223
Mineral Resources Limited Wodgina Project
Cash Flow Supplemental Disclosures [Line Items]
Ownership percentage	60.00%
Lithium Hydroxide Conversion Assets
Cash Flow Supplemental Disclosures [Line Items]
Ownership percentage	40.00%	40.00%
Lithium Hydroxide Conversion Assets | Mineral Resources Limited Wodgina Project
Cash Flow Supplemental Disclosures [Line Items]
Non-cash transfer of 40% value of construction in progress of Kemerton plant to MRL		$ 65,100	$ 43,200