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ACQUISITION OF BUSINESS – INCREASE OF THE PARTICIPATION IN USIMINAS CONTROL GROUP AND NEW GOVERNANCE STRUCTURE OF USIMINAS -Provisions For Contingencies (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Jul. 03, 2023
Jul. 02, 2023
Contingencies Recognized By Usiminas Before Business Combination      
Disclosure of detailed information about business combination [line items]      
Total Provision for contingencies $ (97,873) $ (199,677)  
Tax Contingencies Recognized As Part Of The Business Combination      
Disclosure of detailed information about business combination [line items]      
Total Provision for contingencies (305,364) (432,488)  
Civil And Other Contingencies Recognized As Part Of The Business Combination      
Disclosure of detailed information about business combination [line items]      
Total Provision for contingencies (53,035) (174,333)  
Labour Contingencies Recognized As Part Of The Business Combination      
Disclosure of detailed information about business combination [line items]      
Total Provision for contingencies $ (27,988) (49,655)  
Usiminas      
Disclosure of detailed information about business combination [line items]      
Total Provision for contingencies   (856,153)  
Usiminas | Contingencies Recognized By Usiminas Before Business Combination      
Disclosure of detailed information about business combination [line items]      
Total Provision for contingencies     $ (199,677)
Usiminas | Tax Contingencies Recognized As Part Of The Business Combination      
Disclosure of detailed information about business combination [line items]      
Total Provision for contingencies   (432,488)  
Usiminas | Civil And Other Contingencies Recognized As Part Of The Business Combination      
Disclosure of detailed information about business combination [line items]      
Total Provision for contingencies   (174,333)  
Usiminas | Labour Contingencies Recognized As Part Of The Business Combination      
Disclosure of detailed information about business combination [line items]      
Total Provision for contingencies   $ (49,655)