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Right-of-use assets and Lease liabilities - Details of Current Lease Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities $ 23,011 $ 18,192
Nominal amounts    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 25,128 19,943
Nominal amounts | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 6,702 5,266
Nominal amounts | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 18,426 14,677
Amounts at amortized cost    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 23,011 18,192
Amounts at amortized cost | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 6,106 4,813
Amounts at amortized cost | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities $ 16,905 $ 13,379
Contract Supplier | SQM Salar SpA. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 3.42%  
Contract Supplier | SQM Salar SpA. 1 | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 2.47%  
Contract Supplier | SQM S.A. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate   3.49%
Contract Supplier | SQM Salar S.A. 1 | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate   3.02%
Contract Supplier | SQM Salar S.A. 2 | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate   2.54%
Contract Supplier | SQM Industrial S.A. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 3.52% 2.58%
Contract Supplier | SQM Industrial S.A. 1 | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 2.45%  
Contract Supplier | SQM Nitratos S.A. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate   3.49%
Contract Supplier | Soquimich Comercial S.A. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 3.75% 2.97%
Contract Supplier | Orcoma SPA | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 6.80%  
Contract Supplier | Orcoma SpA 1 | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 2.35% 6.16%
Contract Supplier | Orcoma SpA 2 | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate   6.80%
Contract Supplier | SQM Australia Pty | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 5.36% 4.93%
Contract Supplier | SQM Comercial de México S.A. de C.V. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 5.05%  
Contract Supplier | SQM Comercial De México S.A. De C.V. 1 | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 6.37% 3.74%
Contract Supplier | SQM Comercial De México S.A. De C.V. 2 | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate   9.73%
Contract Supplier | SQM Europe N.V. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 3.07% 1.30%
Contract Supplier | SQM North América Corp. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 5.25% 3.67%
Contract Supplier | SQM África Pty | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 9.20% 9.20%
Contract Supplier | SQM Colombia S.A.S. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 12.86% 2.45%
Contract Supplier | SQM Iberian | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 3.25% 3.25%
Contract Supplier | SQM Commercial Peru S.A.C. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 6.83%  
Contract Supplier | SQM India Private Limited | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 2.84%  
Contract Supplier | SQM Comercial Brasil | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 2.55%  
Contract Supplier | SQM Japan Co. Ltd. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 2.38%  
Contract Supplier | SQM (Shanghai) Industrial Co, Ltd. | Lease liabilities, current    
Disclosure of quantitative information about right-of-use assets [line items]    
Effective rate 2.46%  
Contract Supplier | Nominal amounts | SQM Salar SpA.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities $ 11,251  
Contract Supplier | Nominal amounts | SQM Salar SpA. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2,813  
Contract Supplier | Nominal amounts | SQM Salar SpA. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 8,438  
Contract Supplier | Nominal amounts | SQM Salar SpA. 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,426  
Contract Supplier | Nominal amounts | SQM Salar SpA. 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 361  
Contract Supplier | Nominal amounts | SQM Salar SpA. 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,065  
Contract Supplier | Nominal amounts | SQM S.A.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   $ 66
Contract Supplier | Nominal amounts | SQM S.A. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   20
Contract Supplier | Nominal amounts | SQM S.A. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   46
Contract Supplier | Nominal amounts | SQM Salar S.A. 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   1,378
Contract Supplier | Nominal amounts | SQM Salar S.A. 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   344
Contract Supplier | Nominal amounts | SQM Salar S.A. 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   1,034
Contract Supplier | Nominal amounts | SQM Salar S.A. 2    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   5,532
Contract Supplier | Nominal amounts | SQM Salar S.A. 2 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   1,492
Contract Supplier | Nominal amounts | SQM Salar S.A. 2 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   4,040
Contract Supplier | Nominal amounts | SQM Industrial S.A.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 123 2,589
Contract Supplier | Nominal amounts | SQM Industrial S.A. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 65 726
Contract Supplier | Nominal amounts | SQM Industrial S.A. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 58 1,863
Contract Supplier | Nominal amounts | SQM Industrial S.A. 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2,569  
Contract Supplier | Nominal amounts | SQM Industrial S.A. 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 658  
Contract Supplier | Nominal amounts | SQM Industrial S.A. 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,911  
Contract Supplier | Nominal amounts | SQM Nitratos S.A.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   61
Contract Supplier | Nominal amounts | SQM Nitratos S.A. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   18
Contract Supplier | Nominal amounts | SQM Nitratos S.A. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   43
Contract Supplier | Nominal amounts | Soquimich Comercial S.A.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,290 1,497
Contract Supplier | Nominal amounts | Soquimich Comercial S.A. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 336 374
Contract Supplier | Nominal amounts | Soquimich Comercial S.A. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 954 1,123
Contract Supplier | Nominal amounts | Orcoma SPA    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 9  
Contract Supplier | Nominal amounts | Orcoma SPA | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2  
Contract Supplier | Nominal amounts | Orcoma SPA | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 7  
Contract Supplier | Nominal amounts | Orcoma SpA 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2 9
Contract Supplier | Nominal amounts | Orcoma SpA 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1 2
Contract Supplier | Nominal amounts | Orcoma SpA 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1 7
Contract Supplier | Nominal amounts | Orcoma SpA 2    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   3
Contract Supplier | Nominal amounts | Orcoma SpA 2 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   1
Contract Supplier | Nominal amounts | Orcoma SpA 2 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   2
Contract Supplier | Nominal amounts | SQM Australia Pty    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2,686 2,621
Contract Supplier | Nominal amounts | SQM Australia Pty | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 687 725
Contract Supplier | Nominal amounts | SQM Australia Pty | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,999 1,896
Contract Supplier | Nominal amounts | SQM Comercial de México S.A. de C.V.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2,189  
Contract Supplier | Nominal amounts | SQM Comercial de México S.A. de C.V. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 734  
Contract Supplier | Nominal amounts | SQM Comercial de México S.A. de C.V. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,455  
Contract Supplier | Nominal amounts | SQM Comercial De México S.A. De C.V. 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 854 2,842
Contract Supplier | Nominal amounts | SQM Comercial De México S.A. De C.V. 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 317 711
Contract Supplier | Nominal amounts | SQM Comercial De México S.A. De C.V. 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 537 2,131
Contract Supplier | Nominal amounts | SQM Comercial De México S.A. De C.V. 2    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   1,051
Contract Supplier | Nominal amounts | SQM Comercial De México S.A. De C.V. 2 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   262
Contract Supplier | Nominal amounts | SQM Comercial De México S.A. De C.V. 2 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   789
Contract Supplier | Nominal amounts | SQM Europe N.V.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 485 485
Contract Supplier | Nominal amounts | SQM Europe N.V. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 121 121
Contract Supplier | Nominal amounts | SQM Europe N.V. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 364 364
Contract Supplier | Nominal amounts | SQM North América Corp.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 295 373
Contract Supplier | Nominal amounts | SQM North América Corp. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 74 106
Contract Supplier | Nominal amounts | SQM North América Corp. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 221 267
Contract Supplier | Nominal amounts | SQM África Pty    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,299 1,351
Contract Supplier | Nominal amounts | SQM África Pty | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 370 344
Contract Supplier | Nominal amounts | SQM África Pty | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 929 1,007
Contract Supplier | Nominal amounts | SQM Colombia S.A.S.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 266 22
Contract Supplier | Nominal amounts | SQM Colombia S.A.S. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 66 5
Contract Supplier | Nominal amounts | SQM Colombia S.A.S. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 200 17
Contract Supplier | Nominal amounts | SQM Iberian    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 61 63
Contract Supplier | Nominal amounts | SQM Iberian | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 15 15
Contract Supplier | Nominal amounts | SQM Iberian | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 46 48
Contract Supplier | Nominal amounts | SQM Commercial Peru S.A.C.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 122  
Contract Supplier | Nominal amounts | SQM Commercial Peru S.A.C. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 31  
Contract Supplier | Nominal amounts | SQM Commercial Peru S.A.C. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 91  
Contract Supplier | Nominal amounts | SQM India Private Limited    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 35  
Contract Supplier | Nominal amounts | SQM India Private Limited | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 9  
Contract Supplier | Nominal amounts | SQM India Private Limited | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 26  
Contract Supplier | Nominal amounts | SQM Comercial Brasil    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 18  
Contract Supplier | Nominal amounts | SQM Comercial Brasil | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 5  
Contract Supplier | Nominal amounts | SQM Comercial Brasil | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 13  
Contract Supplier | Nominal amounts | SQM Japan Co. Ltd.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 28  
Contract Supplier | Nominal amounts | SQM Japan Co. Ltd. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 7  
Contract Supplier | Nominal amounts | SQM Japan Co. Ltd. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 21  
Contract Supplier | Nominal amounts | SQM (Shanghai) Industrial Co, Ltd.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 120  
Contract Supplier | Nominal amounts | SQM (Shanghai) Industrial Co, Ltd. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 30  
Contract Supplier | Nominal amounts | SQM (Shanghai) Industrial Co, Ltd. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 90  
Contract Supplier | Amounts at amortized cost | SQM Salar SpA.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 10,073  
Contract Supplier | Amounts at amortized cost | SQM Salar SpA. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2,482  
Contract Supplier | Amounts at amortized cost | SQM Salar SpA. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 7,591  
Contract Supplier | Amounts at amortized cost | SQM Salar SpA. 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,356  
Contract Supplier | Amounts at amortized cost | SQM Salar SpA. 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 339  
Contract Supplier | Amounts at amortized cost | SQM Salar SpA. 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,017  
Contract Supplier | Amounts at amortized cost | SQM S.A.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   65
Contract Supplier | Amounts at amortized cost | SQM S.A. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   19
Contract Supplier | Amounts at amortized cost | SQM S.A. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   46
Contract Supplier | Amounts at amortized cost | SQM Salar S.A. 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   1,298
Contract Supplier | Amounts at amortized cost | SQM Salar S.A. 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   321
Contract Supplier | Amounts at amortized cost | SQM Salar S.A. 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   977
Contract Supplier | Amounts at amortized cost | SQM Salar S.A. 2    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   5,118
Contract Supplier | Amounts at amortized cost | SQM Salar S.A. 2 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   1,400
Contract Supplier | Amounts at amortized cost | SQM Salar S.A. 2 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   3,718
Contract Supplier | Amounts at amortized cost | SQM Industrial S.A.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 120 2,285
Contract Supplier | Amounts at amortized cost | SQM Industrial S.A. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 64 645
Contract Supplier | Amounts at amortized cost | SQM Industrial S.A. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 56 1,640
Contract Supplier | Amounts at amortized cost | SQM Industrial S.A. 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2,313  
Contract Supplier | Amounts at amortized cost | SQM Industrial S.A. 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 589  
Contract Supplier | Amounts at amortized cost | SQM Industrial S.A. 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,724  
Contract Supplier | Amounts at amortized cost | SQM Nitratos S.A.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   60
Contract Supplier | Amounts at amortized cost | SQM Nitratos S.A. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   18
Contract Supplier | Amounts at amortized cost | SQM Nitratos S.A. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   42
Contract Supplier | Amounts at amortized cost | Soquimich Comercial S.A.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,198 1,292
Contract Supplier | Amounts at amortized cost | Soquimich Comercial S.A. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 324 336
Contract Supplier | Amounts at amortized cost | Soquimich Comercial S.A. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 874 956
Contract Supplier | Amounts at amortized cost | Orcoma SPA    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 6  
Contract Supplier | Amounts at amortized cost | Orcoma SPA | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2  
Contract Supplier | Amounts at amortized cost | Orcoma SPA | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 4  
Contract Supplier | Amounts at amortized cost | Orcoma SpA 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2 4
Contract Supplier | Amounts at amortized cost | Orcoma SpA 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1 2
Contract Supplier | Amounts at amortized cost | Orcoma SpA 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1 2
Contract Supplier | Amounts at amortized cost | Orcoma SpA 2    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   3
Contract Supplier | Amounts at amortized cost | Orcoma SpA 2 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   1
Contract Supplier | Amounts at amortized cost | Orcoma SpA 2 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   2
Contract Supplier | Amounts at amortized cost | SQM Australia Pty    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2,672 2,605
Contract Supplier | Amounts at amortized cost | SQM Australia Pty | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 683 721
Contract Supplier | Amounts at amortized cost | SQM Australia Pty | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,989 1,884
Contract Supplier | Amounts at amortized cost | SQM Comercial de México S.A. de C.V.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 2,062  
Contract Supplier | Amounts at amortized cost | SQM Comercial de México S.A. de C.V. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 692  
Contract Supplier | Amounts at amortized cost | SQM Comercial de México S.A. de C.V. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,370  
Contract Supplier | Amounts at amortized cost | SQM Comercial De México S.A. De C.V. 1    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 765 2,586
Contract Supplier | Amounts at amortized cost | SQM Comercial De México S.A. De C.V. 1 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 290 633
Contract Supplier | Amounts at amortized cost | SQM Comercial De México S.A. De C.V. 1 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 475 1,953
Contract Supplier | Amounts at amortized cost | SQM Comercial De México S.A. De C.V. 2    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   987
Contract Supplier | Amounts at amortized cost | SQM Comercial De México S.A. De C.V. 2 | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   240
Contract Supplier | Amounts at amortized cost | SQM Comercial De México S.A. De C.V. 2 | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities   747
Contract Supplier | Amounts at amortized cost | SQM Europe N.V.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 393 381
Contract Supplier | Amounts at amortized cost | SQM Europe N.V. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 97 94
Contract Supplier | Amounts at amortized cost | SQM Europe N.V. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 296 287
Contract Supplier | Amounts at amortized cost | SQM North América Corp.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 272 341
Contract Supplier | Amounts at amortized cost | SQM North América Corp. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 68 97
Contract Supplier | Amounts at amortized cost | SQM North América Corp. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 204 244
Contract Supplier | Amounts at amortized cost | SQM África Pty    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 1,139 1,087
Contract Supplier | Amounts at amortized cost | SQM África Pty | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 316 267
Contract Supplier | Amounts at amortized cost | SQM África Pty | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 823 820
Contract Supplier | Amounts at amortized cost | SQM Colombia S.A.S.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 266 22
Contract Supplier | Amounts at amortized cost | SQM Colombia S.A.S. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 66 5
Contract Supplier | Amounts at amortized cost | SQM Colombia S.A.S. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 200 17
Contract Supplier | Amounts at amortized cost | SQM Iberian    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 58 58
Contract Supplier | Amounts at amortized cost | SQM Iberian | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 14 14
Contract Supplier | Amounts at amortized cost | SQM Iberian | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 44 $ 44
Contract Supplier | Amounts at amortized cost | SQM Commercial Peru S.A.C.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 122  
Contract Supplier | Amounts at amortized cost | SQM Commercial Peru S.A.C. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 31  
Contract Supplier | Amounts at amortized cost | SQM Commercial Peru S.A.C. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 91  
Contract Supplier | Amounts at amortized cost | SQM India Private Limited    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 35  
Contract Supplier | Amounts at amortized cost | SQM India Private Limited | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 9  
Contract Supplier | Amounts at amortized cost | SQM India Private Limited | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 26  
Contract Supplier | Amounts at amortized cost | SQM Comercial Brasil    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 17  
Contract Supplier | Amounts at amortized cost | SQM Comercial Brasil | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 4  
Contract Supplier | Amounts at amortized cost | SQM Comercial Brasil | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 13  
Contract Supplier | Amounts at amortized cost | SQM Japan Co. Ltd.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 28  
Contract Supplier | Amounts at amortized cost | SQM Japan Co. Ltd. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 7  
Contract Supplier | Amounts at amortized cost | SQM Japan Co. Ltd. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 21  
Contract Supplier | Amounts at amortized cost | SQM (Shanghai) Industrial Co, Ltd.    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 114  
Contract Supplier | Amounts at amortized cost | SQM (Shanghai) Industrial Co, Ltd. | Over 90 days    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities 28  
Contract Supplier | Amounts at amortized cost | SQM (Shanghai) Industrial Co, Ltd. | 90 days to 1 year    
Disclosure of quantitative information about right-of-use assets [line items]    
Current lease liabilities $ 86