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FINANCIAL INSTRUMENTS (Details 15) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |  |
Liabilities current | R$ 251,299 | R$ 156,185 |
Currency risk [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Financial income (expenses), net | 69,250 | (48,556) | R$ (439)
Liabilities current | 32,211 |  |
Total | 32,211 |  |
Liabilities current | (936,027) |  |
Total | (758,438) |  |
Liabilities non-current | 177,589 |  |
Exchange Rate Swap Dollar Real Settled [Member] | Currency risk [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Financial income (expenses), net |  | 176,991 | 37,322
Iron Ore Derivative [Member] | Currency risk [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Liabilities current | 10,521 |  |
Total | 10,521 |  |
Liabilities current | (936,027) |  |
Total | (936,027) |  |
Exchange Rate Swap Dollar Euro [Member] | Currency risk [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Financial income (expenses), net | 9,567 |  | 7,119
Liabilities current | 9,567 |  |
Total | 9,567 |  |
Exchange rate swap CDI x Dollar [Member] | Currency risk [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Financial income (expenses), net | 43,591 | 43,817 | (9,960)
Liabilities current | 12,123 |  |
Total | 12,123 |  |
Exchange Rate Swap C D I I P C A [Member] | Currency risk [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Financial income (expenses), net | 112,694 | (257,897) | R$ (34,920)
Total | 238,057 |  |
Liabilities non-current | 238,057 |  |
Exchange Rate Swap Dollar Real [Member] | Currency risk [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Financial income (expenses), net | (96,602) | R$ (11,467) |
Total | (60,468) |  |
Liabilities non-current | R$ (60,468) |  |

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