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Income tax and deferred taxes - Current and Non-Current Tax Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Statement [Line Items]    
Current tax assets, current $ 224,914 $ 157,542
Current tax assets, non-current 127,114 90,364
Monthly provisional income tax payments, Chilean companies    
Statement [Line Items]    
Current tax assets, current 894 435
Monthly provisional income tax payments, foreign companies    
Statement [Line Items]    
Current tax assets, current 96,906 62
Corporate tax credits    
Statement [Line Items]    
Current tax assets, current 653 674
1st category tax absorbed by tax losses    
Statement [Line Items]    
Current tax assets, current 169 26,848
Taxes in recovery process    
Statement [Line Items]    
Current tax assets, current 126,292 129,523
Total tax paid at SQM Salar    
Statement [Line Items]    
Current tax assets, non-current $ 127,114 $ 90,364