EMPLOYEE BENEFITS - Net Liability for Defined Benefit Plans (Details) - BRL (R$) R$ in Millions |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|---|
| IfrsStatementLineItems [Line Items] | |||
| Present value of funded obligations | R$ (5,476.5) | R$ (7,354.3) | R$ (7,582.0) |
| Fair value of plan assets | 4,543.3 | 5,638.0 | 5,533.3 |
| Present value of net obligations | (933.2) | (1,716.3) | (2,048.7) |
| Present value of unfunded obligations | (921.0) | (1,165.4) | (1,195.6) |
| Present value of net obligations | (1,854.2) | (2,881.7) | (3,244.3) |
| Asset ceiling | (163.3) | (180.1) | (160.5) |
| Net liabilities | (2,017.5) | (3,061.8) | (3,404.8) |
| Other long term employee benefits | (87.1) | (104.3) | (105.5) |
| Net liabilities | (2,104.6) | (3,166.1) | (3,510.3) |
| Total employee benefit | 2,104.6 | 3,166.1 | 3,510.3 |
| Employee benefits assets [member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Net liabilities | (56.6) | (27.9) | (33.6) |
| Total employee benefit | 56.6 | 27.9 | 33.6 |
| Employee benefit liabilities [member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Net liabilities | 2,161.2 | 3,194.0 | 3,543.9 |
| Total employee benefit | R$ (2,161.2) | R$ (3,194.0) | R$ (3,543.9) |