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Shareholders equity - Distribution of results (Details) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of classes of share capital [line items] |  |
Result Absorption | R$ (7,074,198) | R$ 14,084,848
Reserve Balances | 13,039,124 | 35,402,942
Realization of deemed cost, net of taxes |  |
Disclosure of classes of share capital [line items] |  |
Result Absorption | (79,385) | (100,705)
Tax incentives |  |
Disclosure of classes of share capital [line items] |  |
Result Absorption | 321,671 | 118,959
Reserve Balances | R$ 1,319,908 | 998,237
Legal Reserve |  |
Disclosure of classes of share capital [line items] |  |
Reserve as Percentage of Share Capital | 20.00% |
Result Absorption |  | 443,010
Reserve Balances | R$ 1,847,109 | 1,847,109
Capital increase reserve |  |
Disclosure of classes of share capital [line items] |  |
Reserve as Percentage of Share Capital | 80.00% |
Result Absorption |  | 10,911,226
Reserve Balances | R$ 2,807,632 | 15,670,952
Special statutory reserve |  |
Disclosure of classes of share capital [line items] |  |
Reserve as Percentage of Share Capital | 20.00% |
Result Absorption |  | 1,212,358
Reserve Balances | R$ 1,847,109 | 1,887,576
Investment reserve |  |
Disclosure of classes of share capital [line items] |  |
Result Absorption | (7,315,184) |
Reserve Balances | 5,157,140 | 14,972,324
Other capital reserves |  |
Disclosure of classes of share capital [line items] |  |
Reserve Balances | 60,226 | 26,744
Unclaimed dividend forfeited |  |
Disclosure of classes of share capital [line items] |  |
Result Absorption | (1,300) |
Interest on own capital |  |
Disclosure of classes of share capital [line items] |  |
Result Absorption |  | R$ 1,500,000

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