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Equity (Details 2) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
EQUITY      
Revaluation surplus, beginning balance R$ 593,382 R$ 426,170 R$ 353,349
Post employment benefits (379,126) 291,740 246,626
Taxes on adjustments 129,007 (88,548) (93,881)
Deemed cost of fixed assets (49,322) (55,322) (70,569)
Taxes on adjustments 2 16,769 18,809 23,994
Actuarial liability - investment realization   (3,541) (33,205)
Attributed to non-controlling interest 546 (2,721) (144)
Adjustments on financial assets - subsidiaries (6,373) 10,295  
Taxes on other adjustments 3 2,167 (3,500)  
Revaluation surplus, ending balance R$ 307,050 R$ 593,382 R$ 426,170