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RELATED-PARTY BALANCES AND TRANSACTIONS (Details 2) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
IfrsStatementLineItems [Line Items] |  |
Borrowings | R$ 19,856,047 | R$ 16,505,166
Tax foreclosure | 10,029 | 9,562
Others | 537,525 | 402,796
Total | 20,403,601 | 16,917,524
Guarantees [member] |  |
IfrsStatementLineItems [Line Items] |  |
Borrowings | 14,257,629 | 13,867,929
Others | 401,370 | 396,780
Total | 14,658,999 | 14,264,709
Local Currency [Member] | Guarantees [member] |  |
IfrsStatementLineItems [Line Items] |  |
Borrowings | 5,598,418 | 2,637,237
Tax foreclosure | 10,029 | 9,562
Others | 136,155 | 6,016
Total | R$ 5,744,602 | 2,652,815
Local Currency [Member] | Guarantees [member] | Transnordestina Logistica S A [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maturities | Up to 09/19/2056 and Indefinite |
Borrowings | R$ 3,695,183 | 2,096,291
Tax foreclosure | 10,029 | 9,365
Others | 4,235 | 3,853
Total | R$ 3,709,447 | 2,109,509
Local Currency [Member] | Guarantees [member] | Controladas Do Grupo [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maturities | Up to 12/21/2024 and indefinite |
Borrowings | R$ 1,903,235 |
Tax foreclosure |  | 197
Others | 131,920 | 2,163
Total | R$ 2,035,155 | 2,360
Local Currency [Member] | Guarantees [member] | C S N Mineracao [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Maturities | Up to 12/21/2024 |
Borrowings |  | 540,946
Total |  | 540,946
Foreign Currency [Member] | Guarantees [member] | United States of America, Dollars |  |
IfrsStatementLineItems [Line Items] |  |
Borrowings | R$ 2,945,000 | 2,565,000
Total | 2,945,000 | 2,565,000
Foreign Currency [Member] | Guarantees [member] | Euro Member Countries, Euro |  |
IfrsStatementLineItems [Line Items] |  |
Others | 75,000 | 75,000
Total | R$ 75,000 | 75,000
Foreign Currency [Member] | Guarantees [member] | C S N Inova Ventures [Member] | United States of America, Dollars |  |
IfrsStatementLineItems [Line Items] |  |
Maturities | 01/28/2028 |
Borrowings | R$ 1,300,000 | 1,300,000
Total | R$ 1,300,000 | 1,300,000
Foreign Currency [Member] | Guarantees [member] | C S N Resources [Member] | United States of America, Dollars |  |
IfrsStatementLineItems [Line Items] |  |
Maturities | Up to 04/17/2026 |
Borrowings | R$ 1,530,000 | 1,150,000
Total | R$ 1,530,000 | 1,150,000
Foreign Currency [Member] | Guarantees [member] | C S N Cimentos [Member] | United States of America, Dollars |  |
IfrsStatementLineItems [Line Items] |  |
Maturities | Indefinite |
Borrowings | R$ 115,000 | 115,000
Total | R$ 115,000 | 115,000
Foreign Currency [Member] | Guarantees [member] | Lusosider Acos Planos [Member] | Euro Member Countries, Euro |  |
IfrsStatementLineItems [Line Items] |  |
Maturities | Indefinite |
Others | R$ 75,000 | 75,000
Total | R$ 75,000 | R$ 75,000

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