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Income tax and deferred taxes - Current and Non-Current Tax Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Major Components Of Tax Expense [Line Items]    
Current tax assets $ 583,143 $ 637,033
Non-current tax assets 59,541 59,541
Monthly provisional income tax payments, Chilean companies    
Major Components Of Tax Expense [Line Items]    
Current tax assets 133,898 584,382
Monthly provisional income tax payments, foreign companies    
Major Components Of Tax Expense [Line Items]    
Current tax assets 12,859 26,741
Corporate tax credits    
Major Components Of Tax Expense [Line Items]    
Current tax assets 4,603 1,918
1st category tax absorbed by tax losses    
Major Components Of Tax Expense [Line Items]    
Current tax assets 0 1,872
Taxes in recovery process (1)    
Major Components Of Tax Expense [Line Items]    
Current tax assets 431,783 22,120
Non current tax receivable (see note 20.3)    
Major Components Of Tax Expense [Line Items]    
Non-current tax assets 59,541 $ 59,541
Provisional Income Tax Payments And Specific Lithium Mining Tax Liabilities, Chilean Companies    
Major Components Of Tax Expense [Line Items]    
Non-current tax assets $ 179,500