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Investments (Tables) | 3 Months Ended
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Mar. 31, 2025
Investments [Abstract] |
Disclosure of Investments Accounted for Using Equity Method and Fair Value - ICO |
|  | 03/31/2025 |  | 12/31/2024
Investments in associates and joint ventures |  | 420,618 |  |  | 453,371 |
Goodwill |  | 224,096 |  |  | 225,486 |
Other investments evaluated at fair value through other comprehensive income |  | 1,006,820 |  |  | 1,138,066 |
|  | 1,651,534 |  |  | 1,816,923 |
Disclosure of Detailed Information About Investment in Associates and Joint Ventures |
Information of investees as at |  | Company Participation
|  |  |  |  | 03/31/2025 |  | Carrying amount |  | In the income (expenses) for the period
| Equity |  | Income (expenses) of the period |  | Participation equity (%) |  | 03/31/2025 |  | 12/31/2024 |  | 03/31/2025 |  | 03/31/2024
Associate |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign |  |  |  |  |  |  |  |  |  |  |  |  |
Ensyn Corporation | (936) |  |  | (7,046) |  |  | 24.80 | % |  | (232) |  |  | 2 |  |  | (3,091) |  |  | (1,408) |
Spinnova Plc (1) | 441,192 |  |  | (49,051) |  |  | 18.76 | % |  | 82,768 |  |  | 95,254 |  |  | (9,161) |  |  | (9,065) |
Simplifyber, Inc. |  |  |  |  | 14.20 | % |  | 28,711 |  |  | 30,060 |  |  |  |  |
|  |  |  |  |  |  | 111,247 |  |  | 125,316 |  |  | (12,252) |  |  | (10,473) |
Joint ventures |  |  |  |  |  |  |  |  |  |  |  |  |
Domestic (Brazil) |  |  |  |  |  |  |  |  |  |  |  |  |
Biomas - Serviços Ambientais, Restauração e Carbono Ltda. | 8,839 |  |  | (8,697) |  |  | 16.66 | % |  | 1,473 |  |  | 2,923 |  |  | (1,449) |  |  | (1,142) |
Ibema Companhia Brasileira de Papel | 377,992 |  |  | 7,117 |  |  | 49.90 | % |  | 188,618 |  |  | 193,901 |  |  | 3,551 |  |  | 7,461 |
Foreign |  |  |  |  |  |  |  |  |  |  |  |  |
F&E Technologies LLC | 11,829 |  |  |  |  |  | 50.00 | % |  | 5,914 |  |  | 6,378 |  |  |  |  |  |  |
Woodspin Oy | 226,731 |  |  | (13,855) |  |  | 50.00 | % |  | 113,366 |  |  | 124,853 |  |  | (6,927) |  |  | (5,753) |
|  |  |  |  |  |  | 309,371 |  |  | 328,055 |  |  | (4,825) |  |  | 566 |
Other investments evaluated at fair value through other comprehensive income |  |  |  |  |  |  |  |  |  |  |  |  |
Bem Agro Integração e Desenvolvimento S.A. |  |  |  |  | 5.82 | % |  | 3,737 |  |  | 4,026 |  |  |  |  |  |
Celluforce Inc. |  |  |  |  | 8.28 | % |  | 25,813 |  |  | 27,823 |  |  |  |  |
Nfinite Nanotechnology Inc. |  |  |  |  | 5.00 | % |  | 5,886 |  |  | 6,347 |  |  |  |  |  |
Lenzing Aktiengesellschaft |  |  |  |  | 15.00 | % |  | 971,384 |  |  | 1,099,870 |  |  |  |  |  |
|  |  |  |  |  |  | 1,006,820 |  |  | 1,138,066 |  |  |  |  |  |  |
|  |  |  |  |  |  | 1,427,438 |  |  | 1,591,437 |  |  | (17,077) |  |  | (9,907) |
(1)The average share price quoted on the Nasdaq First North Growth Market (NFNGM) was EUR0.52 on March 31, 2025 and EUR0.95 in December 31, 2024.

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