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Provisions and other non-financial liabilities - Other Current Provisions (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
ha
subsidiary
Dec. 31, 2023
USD ($)
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Total $ 311,197 $ 392,322
Bottom of range    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Research and development expense 10,000  
Top of range    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Research and development expense $ 15,000  
SQM Salar    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Area of land (in hectares) | ha 140,000  
Area of land, entitled (in hectares) | ha 81,920  
SQM    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Percentage of entity's revenue 1.70%  
SQM | Lithium Metal Equivalent    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Authorized production and sales limit (in tons) | subsidiary 64,816  
SQM | Lithium Carbonate Equivalent    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Authorized production and sales limit (in tons) | subsidiary 345,015  
SQM | Bottom of range    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Research and development expense $ 10,800  
SQM | Top of range    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Research and development expense $ 18,900  
SQM | Top of range | Lithium Metal Equivalent    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Authorized production and sales limit (in tons) | subsidiary 349,553  
SQM | Top of range | Lithium Carbonate Equivalent    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Authorized production and sales limit (in tons) | subsidiary 1,860,671  
Other provisions    
Disclosure Of Provisions And Other Non-Financial Liabilities [Line Items]    
Rent under lease contract $ 265,054 354,205
Provision for additional tax related to foreign loans 2,602 1,641
End of agreement bonus 5,279 6,979
Other bonuses to workers 7,701 6,933
Other bonuses, general staff 2,912 0
Directors’ per diem allowance 5,143 4,676
Miscellaneous provisions 13,549 17,782
Total $ 302,240 $ 392,216