Restructuring Charges and Asset Write-Offs - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		21 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Feb. 28, 2026	Dec. 31, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring charges and asset write-offs	$ 25,866	$ (1,063)
Kemerton Train 1 Restructuring
Restructuring Cost and Reserve [Line Items]
Charges	24,676
Kemerton Train 1 Restructuring \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected charges				$ 80,000
Kemerton Train 1 Restructuring \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected charges				$ 100,000
Kemerton Train 1 Restructuring \| Decommissioning Costs
Restructuring Cost and Reserve [Line Items]
Charges	4,343
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	1,191
Second Half 2024 Restructuring
Restructuring Cost and Reserve [Line Items]
Charges	1,190
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	1,190		$ 13,000
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