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30. EMPLOYEE BENEFITS (Details 13) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of defined benefit plans [line items] |  |
Actuarial liability at the beginning of the year | R$ 912,184 |
Actuarial liability at the end of the year | 758,426 | R$ 912,184
Post-employment Healthcare Benefits [member] |  |
Disclosure of defined benefit plans [line items] |  |
Actuarial liability at the beginning of the year | 892,396 | 897,137
Expenses recognized in income for the year | 57,731 | 69,907
Sponsor's contributions transferred in prior year | (81,340) | (82,081)
Recognition of actuarial loss/(gain) | (189,907) | 7,433
Actuarial liability at the end of the year | R$ 678,880 | R$ 892,396

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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