EMPLOYEE BENEFITS (Details 7) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| IfrsStatementLineItems [Line Items] | ||
| Actuarial financing method | Projected unit credit | Projected unit credit |
| Functional currency | Real (R$) | Real (R$) |
| Recognition of plan assets | Fair value | Fair value |
| Inflation rate | 4.05% | 4.96% |
| Nominal salary increase rate | 1.00% | 1.00% |
| Nominal benefit increase rate | 4.05% | 4.96% |
| Retirement age | 100% on the first date he/she becomes eligible for programmed retirement benefit under the plan | 100% on the first date he/she becomes eligible for programmed retirement benefit under the plan |
| Household of active participants | For the Mauá Prev and ACT Plans, 90% of participants are expected to be married at retirement, while this figure is 95% for other Plans. Female spouses are assumed to be 4 years younger than male participants. | For the Mauá Prev and ACT Plans, 90% of participants are expected to be married at retirement, while this figure is 95% for other Plans. Female spouses are assumed to be 4 years younger than male participants. |
| Millennium Plan [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Nominal discount rate | Millennium Plan: 7.30% | Millennium Plan: 7.12% |
| Rate of return on investments | Millennium Plan: 7.30% | Millennium Plan: 7.12% |
| General mortality table | Millennium Plan: AT-2012 segregated by gender | Millennium Plan: AT-2012 segregated by gender |
| Disability table | Millennium Plan: Easy light | Millennium Plan: Easy light |
| Disability mortality table | Millennium Plan: AT 71 | Millennium Plan: AT 71 |
| Turnover table | Millennium Plan 5% per year | Millennium Plan 5% per year |
| Plan [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Nominal discount rate | Plan 35%: 7.60% | Plan 35%: 7.46% |
| Rate of return on investments | Plan 35%: 7.60% | Plan 35%: 7.46% |
| General mortality table | Plans 35% : AT-2000 Male, aggravated by 15% | Plans 35% : AT-2000 Male, aggravated by 15% |
| Disability mortality table | Plans 35%: MI-2006 - 10% M&F | Plans 35%: MI-2006 - 10% M&F |
| Supplementation [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Nominal discount rate | Supplementation: 7.54% | Supplementation: 7.43% |
| Rate of return on investments | Supplementation : 7.54% | Supplementation : 7.43% |
| General mortality table | Supplementation: AT-2000 segregated by gender, aggravated by 10% | Supplementation: AT-2000 segregated by gender, aggravated by 10% |
| Disability mortality table | Supplementation: Winklevoss - 10% | Supplementation: Winklevoss - 10% |
| Maua Prev [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Nominal discount rate | Mauá Prev: 7.39% | Mauá Prev: 7.34% |
| Rate of return on investments | Mauá Prev: 7.39% | Mauá Prev: 7.34% |
| General mortality table | Mauá Prev: AT-2012 segregated by gender | Mauá Prev: AT-2012 segregated by gender |
| Disability table | Mauá Prev and ACT: ALVARO VINDAS (D50%) | Mauá Prev and ACT: ALVARO VINDAS (D50%) |
| Disability mortality table | Mauá Prev and ACT: IAPB-57 | Mauá Prev and ACT: IAPB-57 |
| Turnover table | Maua Prev: MercerService | Maua Prev: MercerService |
| Other Plans [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Disability table | Other Plans: Not applicable | Other Plans: Not applicable |
| Turnover table | Other Plans: Not applicable | Other Plans: Not applicable |