Restructuring Charges and Asset Write-Offs - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		21 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Mar. 31, 2026	Feb. 28, 2026	Dec. 31, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset write-offs	$ 7,337	$ 4,448	$ 33,203	$ 3,385
Kemerton Train 1 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset write-offs			31,800
Charges			32,207
Kemerton Train 1 Restructuring \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected charges						$ 70,000
Kemerton Train 1 Restructuring \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected charges						$ 90,000
Kemerton Train 1 Restructuring \| Decommissioning Costs
Restructuring Cost and Reserve [Line Items]
Charges			11,819
Kemerton Train 1 Restructuring \| Asset Write-offs
Restructuring Cost and Reserve [Line Items]
Charges			2,732
Kemerton Train 1 Restructuring \| Severance and Employee Benefits
Restructuring Cost and Reserve [Line Items]
Charges			15,397
Kemerton Train 1 Restructuring \| Contract Cancellation Costs
Restructuring Cost and Reserve [Line Items]
Charges			1,013
Kemerton Train 1 Restructuring \| Other
Restructuring Cost and Reserve [Line Items]
Charges			1,246
Second Half 2024 Restructuring
Restructuring Cost and Reserve [Line Items]
Charges			1,402
Second Half 2024 Restructuring \| Minimum
Restructuring Cost and Reserve [Line Items]
Percentage of total headcount impacted by restructuring							600.00%
Second Half 2024 Restructuring \| Maximum
Restructuring Cost and Reserve [Line Items]
Percentage of total headcount impacted by restructuring							700.00%
Second Half 2024 Restructuring \| Decommissioning Costs
Restructuring Cost and Reserve [Line Items]
Charges			1,402		$ 13,200
Second Half 2024 Restructuring \| Asset Write-offs
Restructuring Cost and Reserve [Line Items]
Charges			0		726,000
Second Half 2024 Restructuring \| Severance and Employee Benefits
Restructuring Cost and Reserve [Line Items]
Charges			0		53,400
Second Half 2024 Restructuring \| Contract Cancellation Costs
Restructuring Cost and Reserve [Line Items]
Charges			0		38,400
Second Half 2024 Restructuring \| Other
Restructuring Cost and Reserve [Line Items]
Charges			$ 0		$ 29,300