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19. EMPLOYEES BENEFITS (Details 3)
R$ in Thousands
12 Months Ended
Dec. 31, 2020
BRL (R$)
Number
FAF [Member]  
Disclosure of defined benefit plans [line items]  
2021 R$ 183,771
2022 194,992
2023 204,958
2024 211,397
2025 218,510
2026 to 2030 R$ 1,219,130
Weighted average duration - in years | Number 13.50
Plans II [Member]  
Disclosure of defined benefit plans [line items]  
2021 R$ 1,617
2022 1,658
2023 1,700
2024 1,740
2025 1,778
2026 to 2030 R$ 9,380
Weighted average duration - in years | Number 9.78