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EMPLOYEE BENEFITS - Defined benefit pension plan - Reconciliation of plan assets and liabilities (Details) - Defined benefit pension plan - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Reconciliations of assets and liabilities of the plans |  |  |  |
Net | R$ (1,083,719) | R$ (1,441,592) |  |
Defined benefit obligation | (1,083,719) | (1,441,592) |  |
Present value of the defined benefit obligations |  |  |  |
Reconciliations of assets and liabilities of the plans |  |  |  |
Net | (5,409,065) | (5,921,285) | R$ (4,601,965) | R$ (4,391,251)
Plan assets |  |  |  |
Reconciliations of assets and liabilities of the plans |  |  |  |
Net | 4,647,361 | 4,652,000 | R$ 3,656,891 | R$ 3,568,934
Asset ceiling restrictions on recognition of net funded assets |  |  |  |
Reconciliations of assets and liabilities of the plans |  |  |  |
Net | R$ (322,015) | R$ (172,307) |  |

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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 140 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_140_a&doctype=Standard -URIDate 2021-03-24 + Details
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