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Shareholders equity - Share capital (Details) - BRL (R$) R$ / shares in Units, R$ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Disclosure of classes of share capital [line items] |  |
Share capital | R$ 19,235,546 | R$ 19,235,546
% | 100.00% | 100.00%
Common Stock Price | R$ 52.94 | R$ 61.78
Treasury (Note 24.2) |  |
Disclosure of classes of share capital [line items] |  |
% | 2.01% | 1.97%
Treasury (Note 24.2) | Quantity |  |
Disclosure of classes of share capital [line items] |  |
Quantity | 25,455,929 | 24,875,787
Share Capital |  |
Disclosure of classes of share capital [line items] |  |
Share capital | R$ 19,269,281 |
Share issue related cost | R$ 33,735 |
Share Capital | Quantity |  |
Disclosure of classes of share capital [line items] |  |
Quantity | 1,264,117,615 | 1,264,117,615
Suzano Holding S.A. |  |
Disclosure of classes of share capital [line items] |  |
% | 29.08% | 29.08%
Suzano Holding S.A. | Quantity |  |
Disclosure of classes of share capital [line items] |  |
Quantity | 367,612,329 | 367,612,329
Controller |  |
Disclosure of classes of share capital [line items] |  |
% | 15.51% | 15.51%
Controller | Quantity |  |
Disclosure of classes of share capital [line items] |  |
Quantity | 196,065,636 | 196,065,636
Managements and related persons |  |
Disclosure of classes of share capital [line items] |  |
% | 2.52% | 2.59%
Managements and related persons | Quantity |  |
Disclosure of classes of share capital [line items] |  |
Quantity | 31,903,998 | 32,784,440
Alden Fundo de Investimento em Ações |  |
Disclosure of classes of share capital [line items] |  |
% | 2.15% | 2.07%
Alden Fundo de Investimento em Ações | Quantity |  |
Disclosure of classes of share capital [line items] |  |
Quantity | 27,154,744 | 26,154,744
Controlling Shareholders |  |
Disclosure of classes of share capital [line items] |  |
% | 49.26% | 49.25%
Controlling Shareholders | Quantity |  |
Disclosure of classes of share capital [line items] |  |
Quantity | 622,736,707 | 622,617,149
Other shareholders |  |
Disclosure of classes of share capital [line items] |  |
% | 48.73% | 48.78%
Other shareholders | Quantity |  |
Disclosure of classes of share capital [line items] |  |
Quantity | 615,924,979 | 616,624,679

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