EMPLOYEE BENEFITS - Asset Ceiling (Details) - BRL (R$) R$ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| IfrsStatementLineItems [Line Items] | |||
| Defined benefit obligation at January 1 | R$ 3,166.1 | R$ 3,510.3 | |
| Defined benefit obligation at December, 31 | 2,104.6 | 3,166.1 | R$ 3,510.3 |
| Effect of asset ceiling [member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Defined benefit obligation at January 1 | 27.9 | 33.6 | 56.2 |
| Interest income/(expenses) | 0.0 | 1.3 | 12.2 |
| Change in asset ceiling excluding amounts included in interest income/(expenses) | 30.2 | (9.0) | (48.9) |
| Effects of exchange rate fluctuations | (1.5) | 2.0 | 14.1 |
| Defined benefit obligation at December, 31 | R$ 56.6 | R$ 27.9 | R$ 33.6 |