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Schedule of changes in post-employment benefits (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Post-employment benefits, balance at beginning | R$ 1,493,614 | R$ 1,194,936
Appropriation of actuarial calculation | 116,504 | 94,349
Appropriation of pension and healthcare contributions | 130,308 | 130,129
Adjustment related to actuarial gains (loss) | (246,626) | 271,343
Amortizations | (198,626) | (197,143)
Post-employment benefits, balance at ending | R$ 1,295,174 | R$ 1,493,614

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