v3.26.1
Provisions (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of provisions [Line Items]      
Balance at beginning of the year $ 360,300 $ 300,700  
Changes 80,584 77,910  
Accretion expense 11,461 8,476  
Reclassifications and others 2,006 (1,509)  
Disbursements (21,748) (25,277)  
Balance at end of the year 432,603 360,300  
Classification by maturity [Abstract]      
Current portion 62,075 53,900 $ 107,491
Non-current portion 370,528 306,400 $ 193,209
Closure of mining units and exploration projects [Member]      
Disclosure of provisions [Line Items]      
Balance at beginning of the year 316,918 259,366  
Changes 75,510 73,090  
Accretion expense 11,021 8,476  
Reclassifications and others 1,054 (6,642)  
Disbursements (17,371) (17,372)  
Balance at end of the year 387,132 316,918  
Classification by maturity [Abstract]      
Current portion 32,279 25,758  
Non-current portion 354,853 291,160  
Environmental liabilities [Member]      
Disclosure of provisions [Line Items]      
Balance at beginning of the year 24,827 22,266  
Changes 875 4,062  
Accretion expense 440 0  
Reclassifications and others (1,054) 5,133  
Disbursements (3,824) (6,634)  
Balance at end of the year 21,264 24,827  
Environmental contingencies [Member]      
Disclosure of provisions [Line Items]      
Balance at beginning of the year 5,510 3,689  
Changes 3,604 2,987  
Accretion expense 0 0  
Reclassifications and others 849 0  
Disbursements (32) (1,166)  
Balance at end of the year 9,931 5,510  
Safety contingencies [Member]      
Disclosure of provisions [Line Items]      
Balance at beginning of the year 4,666 4,963  
Changes (145) (373)  
Accretion expense 0 0  
Reclassifications and others 547 0  
Disbursements (35) 76  
Balance at end of the year 5,033 4,666  
Labor contingencies [Member]      
Disclosure of provisions [Line Items]      
Balance at beginning of the year 4,286 3,824  
Changes 407 643  
Accretion expense 0 0  
Reclassifications and others 498 0  
Disbursements (486) (181)  
Balance at end of the year 4,705 4,286  
Tax contingencies [Member]      
Disclosure of provisions [Line Items]      
Balance at beginning of the year 1,948 2,991  
Changes 923 (1,043)  
Accretion expense 0 0  
Reclassifications and others 42 0  
Disbursements 0 0  
Balance at end of the year 2,913 1,948  
Obligations with communities [Member]      
Disclosure of provisions [Line Items]      
Balance at beginning of the year 790 1,838  
Changes (654) (1,048)  
Accretion expense 0 0  
Reclassifications and others 42 0  
Disbursements 0 0  
Balance at end of the year 178 790  
Other provisions [Member]      
Disclosure of provisions [Line Items]      
Balance at beginning of the year 1,355 1,763  
Changes 64 (408)  
Accretion expense 0 0  
Reclassifications and others 28 0  
Disbursements 0 0  
Balance at end of the year $ 1,447 $ 1,355