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SHAREHOLDERS' EQUITY (Details) - shares
Dec. 31, 2022
Dec. 31, 2021
Reserve Quantities [Line Items]    
Number of common shares outstanding 1,326,093,947 1,387,524,047
Percentage of shares 100.00% 100.00%
Outstanding Shares [Member]    
Reserve Quantities [Line Items]    
Number of common shares outstanding 1,326,093,947,000 1,341,734,047,000
Percentage of shares 100.00% 96.70%
Percentage of voting equity interests acquired 100.00% 100.00%
Treasury shares [member]    
Reserve Quantities [Line Items]    
Number of common shares outstanding   45,790,000
Percentage of shares   3.30%
Vicunha Acos S A [Member]    
Reserve Quantities [Line Items]    
Number of common shares outstanding [1] 679,522,254,000 679,522,254,000
Percentage of shares [1] 51.24% 48.97%
Percentage of voting equity interests acquired [1] 51.24% 50.65%
Rio Laco Participacoes S A [Member]    
Reserve Quantities [Line Items]    
Number of common shares outstanding [1] 45,706,242,000 45,706,242,000
Percentage of shares [1] 3.45% 3.29%
Percentage of voting equity interests acquired [1] 3.45% 3.41%
Nyse Adrs [Member]    
Reserve Quantities [Line Items]    
Number of common shares outstanding 254,520,040 250,564,538
Percentage of shares 19.19% 18.06%
Percentage of voting equity interests acquired 19.19% 18.67%
Other One [Member]    
Reserve Quantities [Line Items]    
Number of common shares outstanding 346,345,411 365,941,013
Percentage of shares 26.12% 26.38%
Percentage of voting equity interests acquired 26.12% 27.27%
[1] Controlling group companies.