Supplemental Cash Flow Information - Additional Information (Details) - USD ($) $ in Thousands		8 Months Ended	9 Months Ended
	Oct. 31, 2019	Jun. 30, 2020	Sep. 30, 2020	Sep. 30, 2019
Cash Flow Supplemental Disclosures [Line Items]
Capital expenditures			$ 621,371	$ 608,456
Tax Cuts Jobs Act Of 2017, Transition Tax For Accumulated Foreign Earnings, Liability, Current			30,400	$ 14,400
Mineral Resources Limited Wodgina Project
Cash Flow Supplemental Disclosures [Line Items]
Ownership percentage	60.00%
Consideration transferred	$ 1,300,000		1,322,566
Lithium Hydroxide Conversion Assets
Cash Flow Supplemental Disclosures [Line Items]
Ownership percentage	40.00%
Lithium Hydroxide Conversion Assets | Mineral Resources Limited Wodgina Project
Cash Flow Supplemental Disclosures [Line Items]
Capital expenditures		$ 296,600	131,900
Consideration transferred			$ 480,000