IMPAIRMENT (Details) - BRL (R$) R$ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Packaging Operations [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Book value | R$ 170,163 | R$ 170,163 |
| Cash Flow Period | 2026 to 2035 + perpetuity | 2025 to 2034 + perpetuity |
| Gross Margin | Gross margin update based on historical data, incorporation of business restructuring impacts and market trends | |
| Cost updating | Update of costs based on historical data of each product and incorporation of the impacts of the business restructuring | |
| Perpetuity growth rate | No growth | No growth |
| Discount rate, in real terms | 9.42% | 11.89% |
| Measurement of recoverable value | VIU | VIU |
| Projected price range R$ / t | Market-based data | Market-based data |
| Sensitivity of key assumptions | A 3.31% reduction in volume or a 0.48% reduction in price would result in the estimated recoverable amount being equal to the carrying amount of this CGU | A 2% reduction in volume or a 3% reduction in price would result in the estimated recoverable amount being equal to the carrying amount of this CGU |
| Test result | The recoverable amount of the asset is higher than its carrying amount, and no impairment loss is recognized | |
| Long Steel Operations [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Book value | R$ 454,209 | R$ 453,133 |
| Cash Flow Period | 2026 to 2035 + perpetuity | 2025 to 2034 + perpetuity |
| Gross Margin | Gross margin update based on historical data and market trends | |
| Cost updating | Updating costs based on historical data and market trends | |
| Perpetuity growth rate | No growth | No growth |
| Discount rate, in real terms | 4.00% | 4.14% |
| Measurement of recoverable value | VIU | VIU |
| Projected price range R$ / t | Market-based data | Market-based data |
| Sensitivity of key assumptions | A reduction of 23% in volume or 4.7% in price would result in the estimated recoverable amount being equal to the carrying amount of this CGU | A 24% reduction in volume or a 4% reduction in price would result in the estimated recoverable amount being equal to the carrying amount of this CGU |
| Test result | The recoverable amount of the asset is higher than its carrying amount, and no impairment loss is recognized | |
| Mining Operations [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Book value | R$ 3,236,402 | R$ 3,236,402 |
| Cash Flow Period | 2026 to 2066 | 2025 to 2066 |
| Gross Margin | Reflects cost projection based on the progress of the mining plan as well as project startup and operational ramp-up. Prices and exchange rates projected according to sector reports | |
| Cost updating | Update of costs based on historical data, advancement of the mining plan as well as startup and ramp-up of projects | |
| Perpetuity growth rate | Without perpetuity | Without perpetuity |
| Discount rate, in real terms | 8.69% | 11.10% |
| Measurement of recoverable value | FVLCD | FVLCD |
| Projected price range R$ / t | Market-based data | Market-based data |
| Sensitivity of key assumptions | A 23% reduction in volume or an 11% reduction in price would result in the estimated recoverable amount being equal to the carrying amount of this CGU | A 20% reduction in volume or a 9% reduction in price would result in the estimated recoverable amount being equal to the carrying amount of this CGU |
| Test result | The recoverable amount of the asset is higher than its carrying amount, and no impairment loss is recognized | |