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General information about financial statements (Tables) | 6 Months Ended
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Jun. 30, 2025
Company´s Operations [Abstract] |
Disclosure of subsidiaries |
|  |  |  |  |  | % equity interest
Entity/Type of investment |  | Main activity |  | Country |  | 06/30/2025 |  | 12/31/2024
Consolidated |  |  |  |  |  |  |  |
F&E Tecnologia do Brasil S.A. (Direct) |  | Biofuel production, except alcohol |  | Brazil |  | 100.00 | % |  | 100.00 | %
Fibria Celulose (USA) Inc. (Direct) |  | Business office |  | United States of America |  | 100.00 | % |  | 100.00 | %
Fibria Terminal de Celulose de Santos SPE S.A. (Direct) |  | Port operations |  | Brazil |  | 100.00 | % |  | 100.00 | %
FuturaGene Ltda. |  | Biotechnology research and development |  | England |  | 100.00 | % |  | 100.00 | %
FuturaGene Delaware Inc. (Indirect) |  | Biotechnology research and development |  | United States of America |  | 100.00 | % |  | 100.00 | %
FuturaGene Israel Ltda. (Indirect) |  | Biotechnology research and development |  | Israel |  | 100.00 | % |  | 100.00 | %
FuturaGene Inc. (Indirect) |  | Biotechnology research and development |  | United States of America |  | 100.00 | % |  | 100.00 | %
Maxcel Empreendimentos e Participações S.A. (Direct) |  | Holding |  | Brazil |  | 100.00 | % |  | 100.00 | %
Itacel - Terminal de Celulose de Itaqui S.A. (Indirect) |  | Port operations |  | Brazil |  | 100.00 | % |  | 100.00 | %
Mucuri Energética S.A. (Direct) |  | Power generation and distribution |  | Brazil |  | 100.00 | % |  | 100.00 | %
Paineiras Logística e Transportes Ltda. (Direct) |  | Road freight transport |  | Brazil |  | 100.00 | % |  | 100.00 | %
Portocel - Terminal Espec. Barra do Riacho S.A. (Direct) |  | Port operations |  | Brazil |  | 51.00 | % |  | 51.00 | %
Projetos Especiais e Investimentos Ltda. (Direct) |  | Commercialization of equipment and parts |  | Brazil |  | 100.00 | % |  | 100.00 | %
SFBC Participações Ltda. (Direct) |  | Packaging production |  | Brazil |  | 100.00 | % |  | 100.00 | %
Stenfar S.A. Indl. Coml. Imp. Y. Exp. (Direct) |  | Commercialization of paper and computer materials |  | Argentina |  | 100.00 | % |  | 100.00 | %
Suzano Austria GmbH. (Direct) |  | Business office |  | Austria |  | 100.00 | % |  | 100.00 | %
Suzano Canada Inc. (Direct) |  | Lignin research and development |  | Canada |  | 100.00 | % |  | 100.00 | %
Suzano Ecuador S.A.S. (Direct) |  | Business office |  | Ecuador |  | 100.00 | % |  | 100.00 | %
Suzano Finland Oy (Direct) |  | Industrialization and commercialization of cellulose, microfiber cellulose and paper |  | Finland |  | 100.00 | % |  | 100.00 | %
Suzano International Finance B.V (Direct) |  | Financial fundraising |  | Netherlands |  | 100.00 | % |  | 100.00 | %
Suzano International Holding B.V. (Direct) |  | Holding |  | Netherlands |  | 100.00 | % |  | 100.00 | %
Suzano International Trade GmbH. (Direct) |  | Business office |  | Austria |  | 100.00 | % |  | 100.00 | %
Suzano Packaging LLC (Indirect) |  | Production of coated and uncoated paperboard, used in the production of Liquid Packaging Board and Cupstock |  | United States of America |  | 100.00 | % |  | 100.00 | %
Suzano Material Technology Development Ltd. (Direct) |  | Biotechnology research and development |  | China |  | 100.00 | % |  | 100.00 | %
Suzano Netherlands B.V. (Direct) |  | Financial fundraising |  | Netherlands |  | 100.00 | % |  | 100.00 | %
Suzano Operações Industriais e Florestais S.A. (Direct) |  | Industrialization, commercialization and exporting of pulp |  | Brazil |  | 100.00 | % |  | 100.00 | %
Suzano Pulp and Paper America Inc. (Direct) |  | Business office |  | United States of America |  | 100.00 | % |  | 100.00 | %
Suzano Pulp and Paper Europe S.A. (Direct) |  | Business office |  | Switzerland |  | 100.00 | % |  | 100.00 | %
Suzano Shanghai Ltda. (Direct) |  | Business office |  | China |  | 100.00 | % |  | 100.00 | %
Suzano Shanghai Trading Ltda. (Direct) |  | Business office |  | China |  | 100.00 | % |  | 100.00 | %
Suzano Singapura Pte. Ltda. (Direct) |  | Business office |  | Singapore |  | 100.00 | % |  | 100.00 | %
Suzano Trading International KFT(Direct) |  | Business office |  | Hungary |  | 100.00 | % |  | 100.00 | %
Suzano Ventures LLC (Direct) |  | Corporate venture capital |  | United States of America |  | 100.00 | % |  | 100.00 | %
Joint operation |  |  |  |  |  |  |  |
Veracel Celulose S.A. (Direct) |  | Industrialization, commercialization and exporting of pulp |  | Brazil |  | 50.00 | % |  | 50.00 | %
|  |  |  |  |  | % equity interest
Entity/Type of investment |  | Main activity |  | Country |  | 06/30/2025 |  | 12/31/2024
Equity |  |  |  |  |  |  |  |
Biomas Serviços Ambientais, Restauração e Carbono S.A. (Direct) |  | Restoration, conservation and preservation of forests |  | Brazil |  | 16.66 | % |  | 16.66 | %
Muçununga Serviços Ambientais, Restauração e Carbono Ltda. (Indirect) (1) |  | Restoration, conservation and preservation of forests |  | Brazil |  | 16.66 | % |  |
Ensyn Corporation (Direct) |  | Biofuel research and development |  | United States of America |  | 24.80 | % |  | 24.80 | %
F&E Technologies LLC (Direct/Indirect) |  | Biofuel production, except alcohol |  | United States of America |  | 50.00 | % |  | 50.00 | %
Ibema Companhia Brasileira de Papel (Direct) |  | Industrialization and commercialization of paperboard |  | Brazil |  | 49.90 | % |  | 49.90 | %
Simplifyber, Inc (Indirect) |  | Production of consumer goods through the transformation of cellulose-based liquids |  | United States of America |  | 14.20 | % |  | 13.91 | %
Spinnova Plc (Direct) (“Spinnova”) |  | Research of sustainable raw materials for the textile industry |  | Finland |  | 18.76 | % |  | 18.77 | %
Woodspin Oy (Direct/Indirect) (“Woodspin”) |  | Development and production of cellulose-based fibers, yarns and textile filaments |  | Finland |  | 50.00 | % |  | 50.00 | %
Fair value through other comprehensive income |  |  |  |  |  |  |  |
Bem Agro Integração e Desenvolvimento S.A. (Indirect) |  | Software solutions based on artificial intelligence and computer vision for agribusiness |  | Brazil |  | 5.82 | % |  | 5.82 | %
Celluforce Inc. (Direct) |  | Nanocrystalline pulp research and development |  | Canada |  | 8.28 | % |  | 8.28 | %
Lenzing Aktiengesellschaft (Indirect) |  | Production of wood-based cellulose fibers |  | Austria |  | 15.00 | % |  | 15.00 | %
Nfinite Nanotechnology Inc. (Indirect) |  | Research and development of smart nanocoatings |  | Canada |  | 4.90 | % |  | 5.00 | %
(1) On April 4, 2025, Biomas Serviços Ambientais, Restauração e Carbono S.A acquired Muçununga Serviços Ambientais, Restauração e Carbono Ltda. as a wholly owned subsidiary (100% of participation shares), which is an indirect subsidiary of Suzano S.A.

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- Definition The disclosure of subsidiaries. [Refer: Total for all subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2024-01-01 -Paragraph 17 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2024-01-01 -Paragraph 16 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B4 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B4_a&doctype=Appendix&subtype=B -URIDate 2024-03-27 + Details
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