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FINANCIAL INSTRUMENTS (Details Narrative)
R$ in Thousands
Dec. 31, 2022
BRL (R$)
Dec. 31, 2021
BRL (R$)
Dec. 31, 2020
BRL (R$)
IfrsStatementLineItems [Line Items]      
Net investment R$ 6,293 R$ 6,293  
Borrowings R$ 40,918,742 R$ 32,507,522 R$ 35,270,653
Currency risk [member]      
IfrsStatementLineItems [Line Items]      
Stock price 5.00%    
Scenario 1 [member] | Currency risk [member]      
IfrsStatementLineItems [Line Items]      
Percentage of scenarios 25    
Scenario I I [Member] | Currency risk [member]      
IfrsStatementLineItems [Line Items]      
Percentage of scenarios 50    
C S N Cimentos [Member]      
IfrsStatementLineItems [Line Items]      
Borrowings R$ 115,000