Cover	3 Months Ended
Cover	Mar. 31, 2025
Cover [Abstract]
Document Type	6-K
Amendment Flag	false
Entity Central Index Key	0000909327
Entity Registrant Name	Suzano S.A.
Document Period End Date	Mar. 31, 2025
Current Fiscal Year End Date	--03-31

Consolidated balance sheet - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	R$ 9,914,505	R$ 9,018,818
Marketable securities	6,516,323	12,971,547
Trade accounts receivable	6,354,237	9,132,860
Inventories	8,642,882	7,962,324
Recoverable taxes	1,074,377	929,001
Current Tax Assets Income Tax Related	337,663	180,618
Derivative financial instruments	888,004	1,006,427
Advances to suppliers	85,581	92,133
Other assets	665,543	889,232
Total current assets	34,479,115	42,182,960
Non-current assets
Marketable securities	402,442	391,964
Recoverable taxes	1,042,971	1,179,125
Deferred taxes	4,431,946	7,984,015
Derivative financial instruments	3,244,326	2,880,673
Advances to suppliers	2,496,154	2,503,537
Judicial deposits	590,245	487,993
Other assets	125,724	156,880
Biological assets	22,861,555	22,283,001
Investments	1,651,534	1,816,923
Property, plant and equipment	65,005,656	64,986,040
Right of use	5,249,601	5,180,691
Intangible	13,663,616	13,902,303
Total non-current assets	120,765,770	123,753,145
TOTAL ASSETS	155,244,885	165,936,105
Current liabilities
Trade accounts payable	5,669,809	6,033,285
Loans, financing and debentures	3,428,610	10,501,387
Lease liabilities	870,322	872,228
Derivative financial instruments	1,561,094	2,760,273
Taxes payable	282,866	245,353
Current Tax Liabilities Income Tax Related	71,201	118,362
Payroll and charges	702,399	1,232,971
Liabilities for assets acquisitions and subsidiaries	20,877	21,166
Dividends and interest on own capital payable	7,699	2,200,917
Advances from customers	213,338	145,200
Other liabilities	361,676	346,796
Total current liabilities	13,189,891	24,477,938
Non-current liabilities
Loans, financing and debentures	87,613,961	90,934,144
Lease liabilities	5,981,197	6,100,687
Derivative financial instruments	5,570,354	7,694,547
Liabilities for assets acquisitions and subsidiaries	94,547	99,324
Provision for judicial liabilities	2,943,436	2,926,750
Employee benefit plans	730,032	721,560
Deferred taxes		12,596
Share-based compensation plans	361,895	361,974
Advances from customers	74,715	74,715
Other liabilities	149,211	116,295
Total non-current liabilities	103,519,348	109,042,592
TOTAL LIABILITIES	116,709,239	133,520,530
Equity
Share capital	19,235,546	19,235,546
Capital reserves	64,827	60,226
Treasury shares	(1,371,424)	(1,339,197)
Profit reserves	12,978,898	12,978,898
Other reserves	1,133,200	1,348,796
Retained earnings	6,357,219
Controlling shareholders'	38,398,266	32,284,269
Non-controlling interest	137,380	131,306
Total equity	38,535,646	32,415,575
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	R$ 155,244,885	R$ 165,936,105

Consolidated statements of income (Loss) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Profit (loss) [abstract]
Net sales	R$ 11,552,921	R$ 9,458,602
Cost of sales	(7,729,167)	(5,699,870)
Gross profit	3,823,754	3,758,732
Operating Income (Expenses) [Abstract]
Selling expense	(754,882)	(653,415)
General and administrative expense	(673,551)	(502,975)
Income from associates and joint ventures	(17,077)	(9,907)
Other operating income, net	(119,209)	(40,209)
Profit (loss) from operating activities	2,259,035	2,552,226
NET FINANCIAL INCOME (EXPENSES) [Abstract]
Finance costs	(1,640,085)	(1,130,400)
Finance income	438,853	424,217
Derivative gains, net	3,693,159	(634,537)
Foreign exchange gain (loss)	5,204,286	(1,699,328)
Profit (loss) before tax	9,955,248	(487,822)
Income and social contribution taxes [Abstract]
Current Tax Expense (Income) And Current Social Contribution Tax Expense (Income)	(67,100)	(114,354)
Adjustments for deferred tax expense	(3,539,970)	822,208
Profit (loss)	6,348,178	220,032
Profit (loss), attributable to [abstract]
Resulted of the year attributable to controlling shareholders'	6,340,760	215,392
Non-controlling interest	R$ 7,418	R$ 4,640
Earnings per share [abstract]
Basic earnings (loss) per share	R$ 5.11735	R$ 0.16755
Diluted earnings (loss) per share	R$ 5.10429	R$ 0.16747

Consolidated Statements of Comprehensive Income (Loss) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of comprehensive income [abstract]
Profit (loss)	R$ 6,348,178	R$ 220,032
Other comprehensive income (loss)
Fair value investments in equity measured at fair value through other comprehensive income (1)	(87,077)	258
Tax effect on the fair value of investments	683	(88)
Items with no subsequent effect on income (loss)	(86,394)	170
Exchange rate variations on conversion of financial information of the subsidiaries abroad	(113,060)	2,054
Reclassification adjustments on exchange differences on translation of foreign operations, net of tax		(4)
Items with subsequent effect on income (loss)	(113,060)	2,050
Total comprehensive income	6,148,724	222,252
Attributable to
Controlling shareholders’	6,141,306	217,612
Non-controlling interest	R$ 7,418	R$ 4,640

Statement of changes in equity (Statement) - BRL (R$) R$ in Thousands	Total	Total controlling shareholders' equity	Share Capital	Capital reserves	Treasury shares	Profit reserves	Other reserves	Retained earnings	Non-controlling interest
Equity	R$ 44,810,300	R$ 44,692,770	R$ 9,235,546	R$ 26,744	R$ (1,484,014)	R$ 35,376,198	R$ 1,538,296		R$ 117,530
Profit (loss)	220,032	215,392						R$ 215,392	4,640
Other comprehensive income	2,220	2,220					2,220
Increase (decrease) through share-based payment transactions, equity	3,345	3,345		3,345
Increase (decrease) through treasury share transactions, equity				(4,768)	(4,768)
Stock Repurchased During The Period Value	(309,952)	(309,952)			(309,952)
Transactions with Shareholders, Unclaimed Dividends Forfeited					853,725	(853,725)
Fair Value Adjustments Attributable to Non-Controlling Interests	(1,346)								(1,346)
Amount Removed From Reserve Of Assets Deemed Cost Adjustment Net Of Deferred Taxes							(17,875)	17,875
Stock Repurchased During The Period Value	(2,806,764)
Equity	44,724,599	44,603,775	9,235,546	25,321	(935,473)	34,522,473	1,522,641	233,267	120,824
Equity	32,415,575	32,284,269	19,235,546	60,226	(1,339,197)	12,978,898	1,348,796		131,306
Profit (loss)	6,348,178	6,340,760						6,340,760	7,418
Other comprehensive income	(199,454)	(199,454)					(199,454)
Increase (decrease) through share-based payment transactions, equity	11,038	11,038		11,038
Increase (decrease) through treasury share transactions, equity				(6,437)	(6,437)
Stock Repurchased During The Period Value	(38,664)	(38,664)			(38,664)
Transactions with Shareholders, Unclaimed Dividends Forfeited	317	317						317
Fair Value Adjustments Attributable to Non-Controlling Interests	(1,344)								(1,344)
Amount Removed From Reserve Of Assets Deemed Cost Adjustment Net Of Deferred Taxes							(16,142)	16,142
Equity	R$ 38,535,646	R$ 38,398,266	R$ 19,235,546	R$ 64,827	R$ (1,371,424)	R$ 12,978,898	R$ 1,133,200	R$ 6,357,219	R$ 137,380

- Definition

The amount of residual interest in the assets of the entity after deducting all its liabilities.

+ References + Details

- Definition

The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income]

+ References

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+ Details

Statement of cash flows, indirect method (Statement) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from (used in) operating activities
Profit (loss)	R$ 6,348,178	R$ 220,032
Adjustments to reconcile profit (loss)
Depreciation, depletion and amortization	2,408,025	1,899,297
Depreciation, right-of-use assets	89,397	82,727
Interest expense on lease liabilities	116,258	109,806
Result from sale and disposal of property, plant and equipment, intangible and biological assets, net	46,307	47,554
Income (expense) from associates and joint ventures	17,077	9,907
Exchange rate and monetary variations, net	(5,204,286)	1,699,328
Interest expenses on financing, loans and debentures	1,412,878	1,230,849
Adjustments for finance costs	(52,753)	(377,560)
Accrual of interest on marketable securities	(264,440)	(312,425)
Amortization of transaction costs, premium and discounts	31,923	17,308
Derivative financial instruments, net	(3,693,159)	634,537
Deferred income tax and social contribution	3,539,970	(822,208)
Interest on actuarial liabilities and cost of current service	19,822	18,963
Provision for judicial liabilities, net	28,985	29,015
Provision (reversal) for doubtful accounts, net	7,653	(1,317)
Provision (reversal) for inventory losses, net	4,475	8,030
Provision (reversal) for loss of ICMS credits, net	45,766	(23,763)
Other	15,856	15,121
Trade accounts receivable	2,238,113	373,116
Inventories	(430,784)	(298,050)
Recoverable taxes	(75,463)	8,363
Other assets	183,194	(15,658)
Trade accounts payable	(91,408)	(141,975)
Taxes payable	5,303	90,822
Payroll and charges	(528,881)	(232,642)
Other liabilities	(41,443)	(15,767)
Cash generated from operations	6,176,563	4,253,410
Payment of interest on financing, loans and debentures	(2,014,500)	(1,749,517)
Capitalized loan costs paid	52,753	377,560
Interest received on marketable securities	361,942	228,249
Payment of income taxes	(159,068)	(55,574)
Cash provided by operating activities	4,417,690	3,054,128
Additions to property, plant and equipment	(1,231,900)	(2,556,172)
Additions to intangible	(11,836)	(55,110)
Purchase of biological assets	(1,836,180)	(1,631,502)
Proceeds from sales of property, plant and equipment and biological assets	43,551	26,719
Capital increase in affiliates		(18,908)
Marketable securities, net	6,367,566	(1,566,266)
Advances for acquisition of wood from operations with development and partnerships	(6,998)	(235,775)
Cash provided (used) in investing activities	3,324,203	(6,037,014)
Proceeds from loans, financing and debentures	7,055,244	4,244,874
Proceeds from derivative transactions	124,558	444,112
Payment of loans, financing and debentures	(11,175,521)	(4,038,400)
Payment of leases	(371,531)	(320,643)
Payment of interest on own capital and dividends	(2,192,903)	(1,309,450)
Shares repurchased	(38,664)	(309,952)
Cash (used) by financing activities	(6,598,817)	(1,289,459)
EXCHANGE VARIATION ON CASH AND CASH EQUIVALENTS	(247,389)	129,600
Increase (Decrease) in cash and cash equivalents, net	895,687	(4,142,745)
At the beginning of the period	9,018,818	8,345,871
At the end of the period	R$ 9,914,505	R$ 4,203,126

General information about financial statements

3 Months Ended

Mar. 31, 2025

Company´s Operations [Abstract]

Disclosure of Company Operations

1 COMPANY’S OPERATIONS

Suzano S.A. (“Suzano”) and its subsidiaries (collectively the “Company”) is a public company with its headquarters in Brazil, at Avenida Professor Magalhães Neto, No. 1,752 - 10th floor, rooms 1010 and 1011, Bairro Pituba, in the city of Salvador, State of Bahia, and its main business office in the city of São Paulo.

Suzano’s shares are traded on B3 S.A. (“Brasil, Bolsa, Balcão - “B3”), listed in the New Market under the ticker SUZB3, and its American Depositary Receipts (“ADRs”) in a ratio of 1 (one) per common share, Level II, are traded in the New York Stock Exchange (“NYSE”) under the ticker SUZ.

The Company has 16 industrial units, 14 located in Brazil in the cities of Cachoeiro de Itapemirim and Aracruz (Espírito Santo State), Belém (Pará State), Eunápolis and Mucuri (Bahia State), Maracanaú (Ceará State), Imperatriz (Maranhão State), Jacareí, Limeira, Mogi das Cruzes and two units in Suzano (São Paulo State) and Três Lagoas and Ribas do Rio Pardo (Mato Grosso do Sul State) and two units in United States located in the cities of Pine Bluff (Arkansas) and Waynesville (North Carolina). Additionally, it has seven technology centers, four located in Brazil, one in Canada, one in China and one in Israel, 28 distribution centers and four ports, all located in Brazil.

These units produce hardwood pulp from eucalyptus, coated paper, paperboard, uncoated paper and cut size paper and packages of sanitary paper (consumer goods - tissue) to serve the domestic and foreign markets.

Pulp and paper are sold in foreign markets by Suzano, as well as through its wholly-owned subsidiaries and/or its sales offices in Argentina, Austria, China, Ecuador, United States of America and Singapore.

The Company's operations also include the commercial management of eucalyptus forest for its own use, operation of port terminals, and holding of interests, as a partner or shareholder, in other companies or enterprises, and commercialization of electricity generated from its pulp production process.

The Company is controlled by Suzano Holding S.A., through a voting agreement whereby it holds 49.26% of the common shares of its share capital.

These unaudited condensed consolidated interim financial information was authorized by the Board of Directors on May 7, 2025.

1.1 Equity interests

The Company holds equity interests in the following entities:


			% equity interest
Entity/Type of investment	Main activity	Country	03/31/2025		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 Ltd.	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 Ltd. (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 Ltd. (Direct)	Business office	China	100.00	%	100.00	%
Suzano Shanghai Trading Ltd. (Direct)	Financial fundraising	China	100.00	%	100.00	%
Suzano Singapura Pte. Ltd (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	03/31/2025		12/31/2024
Equity
Biomas Serviços Ambientais, Restauração e Carbono S.A. (Direct)	Restoration, conservation and preservation of forests	Brazil	16.66	%	16.66	%
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	5.00	%	5.00	%

Basis of preparation and presentation of unaudited condensed consolidated financial information	3 Months Ended
	Mar. 31, 2025
Basis of preparation and presentation of unaudited condensed consolidated financial information [Abstract]
Disclosure of basis of preparation of financial statements [text block]	2 BASIS OF PREPARATION AND PRESENTATION OF FINANCIAL STATEMENTS The Company’s unaudited condensed consolidated interim financial information, for the three-month period ended March 31, 2025, are prepared in compliance with the international accounting standard IAS 34 Interim Financial Reporting issued by the International Accounting Standards Board (“IASB”) and disclose all the applicable significant information related to the financial information, which is consistent with the information used by Management in the performance of its duties. The Company’s unaudited condensed consolidated interim financial information are expressed in thousands of Brazilian Reais (“R$”), as well as the amounts of other currencies, when applicable, were also expressed in thousands, unless otherwise stated. The preparation of unaudited condensed consolidated interim financial information requires Management to make judgments, use estimates and adopt policies in the process of applying accounting practices that affect the disclosed amounts of revenues, expenses, assets and liabilities, including the disclosure of contingent liabilities assumed. However, the uncertainty inherent to these judgements, assumptions and estimates could result in material adjustments to the carrying amount of certain assets and liabilities in future periods. The Company reviews its judgments, estimates and assumptions continually as disclosed in the annual financial statements for the year ended December 31, 2024 (Note 3.2.34). For the three-month period ended March 31, 2025, there were no changes in these judgments, estimates and assumptions compared to disclosed on December 31, 2024. The unaudited condensed consolidated interim financial information was prepared on historical cost basis, except for the following material items recognized: (i)Derivative and non-derivative financial instruments measured at fair value; (ii)Share-based payments and employee benefits measured at fair value; and (iii)Biological assets measured at fair value; The unaudited condensed consolidated interim financial information was prepared under the going concern assumption.

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2025
Summary of material accounting policies [Abstract]
Summary of significant accounting policies	3 SUMMARY OF MATERIAL ACCOUNTING POLICIES The unaudited condensed consolidated interim financial information was prepared based on the information of Suzano and its subsidiaries on the same base date, except for subsidiaries Futuragene and Suzano Packaging and associates Biomas, Ensyn, Simplifyber and Spinnova, as well as in accordance with consistent accounting policies and practices. The unaudited condensed consolidated interim financial information should be read in conjunction with the annual financial statements for the year ended December 31, 2024, considering that its purpose is to provide an update on the activities, events and significant circumstances in relation to those disclosed in the consolidated financial statements. Therefore, unaudited condensed consolidated interim financial information focus on new activities, events and circumstances and do not duplicate the information previously disclosed, except when Management judges that the maintenance of the information is relevant. The accounting policies have been consistently applied to all consolidated companies. There were no changes on such policies and estimates calculation methodologies, which was disclosed in the annual financial statements of December 31, 2024. 3.1 New accounting policies and changes in accounting policies adopted The new standards and interpretations issued, until the issuance of the Company’s unaudited condensed consolidated interim financial information, are described below. 3.1.1 Amendments to IAS 21: Lack of interchangeability (applicable for annual on/or after January 1, 2025) The changes will create requirements for the entity to apply a consistent approach to assessing whether a currency is exchangeable for another currency and, when it is not, to determining the appropriate exchange rate to use and the disclosures to be made. In this context, exchangeability is considered non-existent when, for a given purpose, the entity is unable to obtain more than an insignificant amount of foreign currency. To this end, the entity evaluates: i.the timeliness of obtaining foreign currency; ii.the practical ability (and not the intention) to obtain foreign currency; It is iii.the available markets or exchange mechanisms that create enforceable rights and obligations. The Company assessed the content of this pronouncement and did not identify any impacts.

Cash and cash equivalents

3 Months Ended

Mar. 31, 2025

Cash and cash equivalents [abstract]

Disclosure of cash and cash equivalents [text block]

5 CASH AND CASH EQUIVALENTS


	Average yield p.a. %		03/31/2025	12/31/2024
Cash and banks (1)	4.60%		8,318,885	6,596,510

Cash equivalents
Local currency
Fixed-term deposits (compromised)	101.30	% of CDI	1,595,620	2,422,308



			9,914,505	9,018,818

(1)Refers mainly to investments in foreign currency under the Sweep Account modality, which is a remunerated account the balance of which is invested and made available automatically each day.

Marketable securities

3 Months Ended

Mar. 31, 2025

Disclosure of financial assets [abstract]

Disclosure of financial assets [text block]

6 MARKETABLE SECURITIES


	Average yield p.a. %	03/31/2025	12/31/2024
In local currency
Private funds	98.90% of CDI	382,388	552,635
Private Securities ("CDBs")	100.80% of CDI	4,833,953	11,144,881
Public Securities (1)	IPCA + 6.15%	1,227,033	1,203,776
CDBs - Escrow Account (2)	101.76% of CDI	402,442	391,964
Other	99.30% of CDI	23,079
		6,868,895	13,293,256
Foreign currency

Other		49,870	70,255
		49,870	70,255
		6,918,765	13,363,511

Current		6,516,323	12,971,547
Non-Current		402,442	391,964

(1)Acquisition of Brazil National Treasury Notes indexed to IPCA (NTN-B).

(2)Includes escrow accounts, which will be released only after obtaining the applicable governmental approvals, and pending compliance by the Company with the conditions precedent in transactions involving the sale of rural properties.

Trade accounts receivables

3 Months Ended

Mar. 31, 2025

Trade and other current receivables [abstract]

Disclosure of trade and other receivables [text block]

7 TRADE ACCOUNTS RECEIVABLE

7.1 Breakdown of balances


	03/31/2025	12/31/2024
Domestic customers
Third parties	1,768,988	1,989,455
Related parties (Note 11.1) (1)	79,826	83,343

Foreign customers
Third parties	4,539,485	7,090,160
Related parties (Note 11.1)	180	202

(-) Expected credit losses	(34,242)	(30,300)
	6,354,237	9,132,860

(1)The balance refers to transactions with Ibema Companhia Brasileira de Papel.

The Company carries out factoring transactions for certain customer receivables where it transfers the control of all risks and rewards related to these receivables to the counterparty, so these receivables are derecognized from accounts receivable in the balance sheet. This transaction refers to an additional cash generation opportunity which can be discontinued at any time without significant impacts on the Company's operation and is therefore classified as a financial asset measured at amortized cost. The decision to assign the receivables is continuously reassessed based on market conditions and the Company's cash flow strategy, meaning that the volume of discounts may vary over time. The impact of these factoring transactions on the accounts receivable as of March 31, 2025, was R$6,364,876 (R$6,821,539 as of December 31, 2024).

7.2 Breakdown of trade accounts receivable by maturity


	03/31/2025	12/31/2024
Current	5,508,066	8,216,570
Overdue
Up to 30 days	511,482	682,142
From 31 to 60 days	129,830	134,674
From 61 to 90 days	99,636	38,187
From 91 to 120 days	41,069	17,701
From 121 to 180 days	30,151	12,402
From 181 days	34,003	31,184
	6,354,237	9,132,860

7.3 Roll-forward of expected credit losses


	03/31/2025	12/31/2024
Opening balance	(30,300)	(31,962)
(Provisions)/Reversals, net	(7,653)	(2,585)

Write-offs	3,098	5,790
Exchange rate variations	613	(1,543)
Closing balance	(34,242)	(30,300)

The Company maintains guarantees for overdue receivables as part of its commercial operations, through credit insurance policies, letters of credit and other guarantees. These guarantees avoid the need to recognize expected credit losses, in accordance with the Company's credit policy.

7.4 Main customers

On March 31, 2025, the Company has 1 (one) customer responsible for 11.46% of the net sales of pulp operating segment and no main customer int the paper operating segment. On December 31, 2024 the Company did not have any customer responsible for more than 10.00% of the net sales of pulp operating segment

Inventories

3 Months Ended

Mar. 31, 2025

Subclassifications of assets, liabilities and equities [abstract]

Disclosure of inventories [text block]

8 INVENTORIES


	03/31/2025	12/31/2024
Finished goods
Pulp
Domestic (Brazil)	972,514	801,623
Foreign	1,882,700	1,510,985
Paper
Domestic (Brazil)	653,493	561,409
Foreign	429,903	362,027
Work in process	142,686	135,380
Raw materials
Wood	2,284,719	2,287,406
Operating supplies and packaging	1,079,651	1,098,894
Spare parts and other	1,292,327	1,302,534

(-) Expected losses	(95,111)	(97,934)
	8,642,882	7,962,324

8.1 Roll-forward of estimated losses


	03/31/2025	12/31/2024
Opening balance	(97,934)	(95,053)
Additions	(7,592)	(83,705)
Reversals	3,117	6,352
Write-offs	7,298	74,472
Closing balance	(95,111)	(97,934)

On March 31, 2025 and 2024, there were no inventory items pledged as collateral.

Recoverable taxes

3 Months Ended

Mar. 31, 2025

Recoverable Taxes [Abstract]

Disclosure of Recoverable Taxes

9 RECOVERABLE TAXES


	03/31/2025	12/31/2024
IRPJ/CSLL – prepayments and withheld taxes	384,508	227,464
PIS/COFINS – on acquisitions of property, plant and equipment (1)	180,090	187,126
PIS/COFINS – operations	825,425	789,667
PIS/COFINS – exclusions from ICMS (2)	381,972	405,407
ICMS – on acquisitions of property, plant and equipment (3)	476,117	471,825
ICMS – operations (4)	1,678,217	1,654,162
Reintegra program (5)	78,743	70,610
Other taxes and contributions	77,666	64,444
Provision for loss on ICMS credits (6)	(1,627,727)	(1,581,961)
	2,455,011	2,288,744

Current	1,412,040	1,109,619
Non-current	1,042,971	1,179,125

(1)Social Integration Program (“PIS”) and Social Security Funding Contribution (“COFINS”): Credits whose realization is based on the years of depreciation of the corresponding asset.

(2)The Company and its subsidiaries filed lawsuits over the years seeking the exclusion of ICMS from the PIS and COFINS contribution tax basis, in relation to certain transactions during various periods from March 1992.

(3)Tax on Sales and Services (“ICMS”): Credits from the acquisition of property, plant and equipment are recovered on a straight-line basis over a four-year period, from the acquisition date, in accordance with the relevant regulation, the ICMS Control on Property, Plant and Equipment (“CIAP”).

(4)ICMS credits accrued due to the volume of exports and credit generated from product import transactions: Credits are concentrated in the States of Espírito Santo, Maranhão, Mato Grosso do Sul e São Paulo, where the Company realizes the credits through the sale of credits to third parties, after approval from the State Ministry of Finance of each State. Credits are also being realized through the consumption of consumer goods (tissue) transactions in the domestic market.

(5)Special Regime of Tax Refunds for Export Companies ("Reintegra"): Reintegra is a program that aims to refund the residual costs of taxes paid throughout the export chain to taxpayers, to make them more competitive in foreign markets.

(6)Related to provisions for ICMS credit balances that are not probable to be recovered.

9.1 Roll-forward of provision for loss


		ICMS
	03/31/2025	12/31/2024
Opening balance	(1,581,961)	(1,452,435)
Addition	(108,166)	(316,741)
Reversal (1)	62,400	186,014
Write-off		1,201
Closing balance	(1,627,727)	(1,581,961)

(1)Refers mainly to the reversal of the provision for loss resulting from the recovery of ICMS credits from the State of Espírito Santo through sale to third parties.

Advances to suppliers

3 Months Ended

Mar. 31, 2025

Advances do Suppliers [Abstract]

Disclosure Advances To Suppliers Explanatory

10 ADVANCES TO SUPPLIERS


	03/31/2025	12/31/2024
Forestry development program and partnerships	2,496,154	2,503,537
Advance to suppliers - others	85,581	92,133
	2,581,735	2,595,670

Current	85,581	92,133
Non-current	2,496,154	2,503,537

In the annual financial statements for the year ended December 31, 2024, the characteristics of the advances were disclosed, which did not change during the three-month period ended March 31, 2025.

Related parties

3 Months Ended

Mar. 31, 2025

Disclosure of transactions between related parties [abstract]

Disclosure of related party [text block]

11 RELATED PARTIES

The Company's commercial and financial transactions with the controlling shareholder and Companies owned by the controlling shareholder Suzano Holding S.A. ("Suzano Group") were carried out at specific prices and conditions, as well as the corporate governance practices adopted by the Company, and those recommended and/or required by the applicable legislation.

The transactions refers mainly to:

Assets: (i) accounts receivable from the sale of pulp, paper, tissue and other products; (ii) dividends receivable; (iii) reimbursement for expenses; and (iv) social services;

Liabilities: (i) loan agreements;(ii) reimbursement for expenses; (iii) social services; (iv) real estate consulting; and (v) dividends payable.

Amounts in the statements of income: (i) sale of pulp, paper, tissue and other products; (ii) loan charges and exchange variation; (iii) social services and (viii) real estate consulting.

For the three-month period ended March 31, 2025, there were no material changes in the terms of the agreements, deals and transactions entered into, nor were there any new contracts, agreements or transactions of any different nature entered into between the Company and its related parties.

11.1 Balances recognized in assets and liabilities and amounts of transactions during the period


	Assets		Liabilities		Sales (purchases), net
	03/31/2025	12/31/2024	03/31/2025	12/31/2024	03/31/2025	03/31/2024
Transactions with majority shareholders
Suzano Holding S.A.		4	(21)	(630,387)	12	13
Controller				(336,205)
Management and related persons				(55,627)
Alden Fundo de Investimento em Ações				(52,764)
		4	(21)	(1,074,983)	12	13

Transactions with companies of the Suzano Group and other related parties
Management (expect compensation – Note 11.2)	68	61			117	143
Bexma Participações Ltda					1	1
Bizma Investimentos Ltda.						1
Naman Capital Ltda	1				1
Civelec Participações Ltda	3,860	3,860
Fundação Arymax						1
Ibema Companhia Brasileira de Papel (1)	79,826	83,343	(2,325)	(1,413)	49,430	40,934
Instituto Ecofuturo - Futuro para o Desenvolvimento Sustentável	22	21			(1,472)	(1,620)
IPLF Holding S.A.		1			2	1
Mabex Representações e Participações Ltda.			(624)	(23)	(600)	(34)
Nemonorte Imóveis e Participações Ltda			(15)		(45)	(44)
Woodspin Oy	176	203			182	173
	83,953	87,489	(2,964)	(1,436)	47,616	39,556
	83,953	87,493	(2,985)	(1,076,419)	47,628	39,569

Assets
Trade accounts receivable (Note 7)	80,006	83,545
Other assets	3,947	3,948
Liabilities
Trade accounts payable (Note 17)			(2,985)	(1,457)
Dividends and interest on own capital payable				(1,074,962)
	83,953	87,493	(2,985)	(1,076,419)

(1)Refers mainly to the sale of pulp.

11.2 Management compensation

Expenses related to the compensation of key management personnel, which include the Board of Directors, Fiscal Council and Board of Statutory Executive Officers, recognized in the statement of income for the period, are set out below:


	03/31/2025	03/31/2024
Short-term benefits
Salary or compensation	23,280	13,065
Direct and indirect benefits	328	771
Bonus	4,499	2,912
	28,107	16,748
Long-term benefits
Share-based compensation plan	49,415	14,261
	49,415	14,261
	77,522	31,009

Short-term benefits include fixed compensation (salaries and fees, vacation pay, mandatory bonus and “13th month’s salary” bonus), payroll charges (Company’s share of contributions to social security – “INSS”) and variable compensation such as profit sharing, bonuses and benefits (company car, health plan, meal voucher, market voucher, life insurance and private pension plan).

Long-term benefits include the stock option plan and phantom shares for executives and key members of Management, in accordance with the specific regulations disclosed in Note 22.1.

Income taxes

3 Months Ended

Mar. 31, 2025

Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]

Disclosure of income tax [text block]

12 INCOME AND SOCIAL CONTRIBUTION TAXES

The Company calculates income tax and social contribution taxes, current and deferred, based on the following rates: (i) 15% plus an additional 10% on taxable income in excess of R$240 for IRPJ; and (ii) 9% for CSLL, on the net income. Balances are recognized in the Company's income on an accrual basis.

Subsidiaries domiciled in Brazil have their taxes calculated and provisioned in accordance with the current legislation and their specific tax regime, including, in some cases, the presumed profit method. Subsidiaries domiciled abroad are subject to taxation in their respective jurisdictions, according to local regulations.

Deferred income and social contribution taxes are recognized at the net amounts in non-current assets or liabilities.

In Brazil, Law nº. 12,973/14 revoked article 74 of Provisional Measure nº. 2,158/01 and determines that the parcel of the adjustment of the value of the investment in subsidiaries, direct and indirect, domiciled abroad, equivalent to the profit earned by them before income tax, except for exchange rate variation, must be added in the determination of taxable income and the social contribution calculation basis of the controlling entity domiciled in Brazil, at each year ended.

The Company management believes in the validity of the provisions of international treaties entered by Brazil to avoid double taxation. In order to ensure its right to non-double taxation, the Company filed a lawsuit in April 2019, which aims to exempt the double taxation in Brazil, of profits earned by its subsidiary located in Austria, according to Law No. 12,973/14. Due to the preliminary injunction granted in favor of the Company in the aforementioned lawsuit, the Company decided not to add the profit from Suzano International Trading GmbH, located in Austria, when determining its taxable income and social contribution basis of the net profit of the Company for the three-month period ended March 31, 2025. There is no provision for tax related to the non-double taxation profits of such subsidiary in 2025. Disclosures about uncertain tax positions for income tax and social contribution (IFRIC 23) are presented in Note 20.2.

12.1 Deferred taxes

12.1.1 Deferred income and social contribution taxes


	03/31/2025	12/31/2024
Tax loss carried forward	796,552	796,831
Negative tax basis of social contribution carried forward	304,015	307,143

Assets - temporary differences
Provision for judicial liabilities	308,825	324,873
Operating provisions	330,443	515,779
Provisions for other losses	563,416	547,242
Employee benefit plans	248,211	245,331
Exchange rate variations	5,381,844	7,385,034
Derivatives losses (“MtM”)(1)	1,017,165	2,230,835
Amortization of fair value adjustments arising from business combinations	624,513	625,745
Unrealized profit on inventories	423,772	539,157
Leases (1)	542,608	606,944
	10,541,364	14,124,914

Liabilities - temporary differences
Goodwill - tax benefit on unamortized goodwill	1,661,945	1,589,887
Property, plant and equipment - deemed cost	1,050,988	1,066,883
Depreciation for tax-incentive reason (2)	717,303	733,640
Capitalized loan costs	938,284	947,482
Fair value of biological assets	1,237,672	1,317,095
Deferred taxes, net of fair value adjustments	335,034	342,141
Tax credits - gains from tax lawsuit (exclusion of ICMS from the PIS and COFINS basis)	129,893	137,928

Provision of deferred taxes on results of subsidiaries abroad	33,476
Other temporary differences	4,823	18,439
	6,109,418	6,153,495

Non-current assets	4,431,946	7,984,015
Non-current liabilities		12,596

(1)The Company presents a net balance of derivatives and leases, as gains and losses from deferred taxes are offset simultaneously. For the derivatives line, the passive temporary difference was R$1,396,134 and asset temporary difference of R$2,413,299 (passive temporary difference was R$1,321,614 and asset temporary difference of R$3,552,449 as of December 31, 2024). For the lease line, the passive temporary difference was R$1,741,146 and asset temporary difference was R$2,283,754 (passive temporary difference was R$1,763,847 and asset temporary difference was R$2,370,791 as of December 31, 2024).

(2)Tax depreciation is taken as a benefit only in the income tax calculation bases.

12.1.2 Breakdown of accumulated tax losses and social contribution tax losses carried forward


	03/31/2025	12/31/2024
Tax loss carried forward	3,186,208	3,187,324
Negative tax basis of social contribution carried forward	3,377,944	3,412,700

12.1.3 Roll-forward of deferred tax assets


	03/31/2025	12/31/2024
Opening balance	7,971,419	533,836
Tax loss carried forward	(279)	(413,137)
Negative tax basis of social contribution carried forward	(3,128)	(149,887)
Provision for judicial liabilities	(16,048)	715
Operating provisions and other losses	(166,282)	93,545
Exchange rate variation	(2,003,190)	5,000,881
Derivative (gains) losses (“MtM”)	(1,213,670)	2,908,925
Amortization of fair value adjustments arising from business combinations	5,875	193
Unrealized profit on inventories	(115,385)	387,579
Leases	(64,336)	250,834
Goodwill - tax benefit on unamortized goodwill	(72,058)	(288,233)
Property, plant and equipment - deemed cost	15,895	70,600
Depreciation accelerated for tax-incentive reason	16,337	66,217
Capitalized loan costs	9,198	(307,419)
Fair value of biological assets	79,423	(201,663)
Deferred taxes on the results of subsidiaries abroad	(33,476)
Credits on exclusion of ICMS from the PIS/COFINS tax base	8,035	12,763
Other temporary differences	13,616	5,670
Closing balance	4,431,946	7,971,419

12.2 Reconciliation of the effects of income tax and social contribution on profit or loss


	03/31/2025	03/31/2024
Net income (loss) before taxes	9,955,248	(487,822)
Income tax and social contribution benefit (expense) at statutory nominal rate of 34%	(3,384,784)	165,859

Tax effect on permanent differences
Impact of the taxation difference on profit of associates in Brazil and abroad (1)	(283,517)	510,772
Equity method	(5,806)	(3,368)


Credit related to Reintegra Program	2,912	2,038
Director bonuses	(11,912)	(3,842)
Tax incentives (Note 12.3)	67,802	11,315
Donations/Fines – Other	8,235	25,080
	(3,607,070)	707,854
Income tax
Current	(57,542)	(90,923)
Deferred	(2,592,733)	605,999
	(2,650,275)	515,076
Social Contribution
Current	(9,558)	(23,431)
Deferred	(947,237)	216,209
	(956,795)	192,778
Income and social contribution benefits (expenses) on the period	(3,607,070)	707,854

(1)The difference in the taxation of subsidiaries is substantially due to the differences between the nominal tax rates in Brazil and those of subsidiaries located abroad.

12.3 Tax incentives

The Company benefits from a tax incentive for partial reduction of the income tax obtained from operations carried out in areas under the jurisdiction of the Northeast Development Superintendence (“SUDENE”) and the Superintendence of Amazon Development (“SUDAM”). The IRPJ reduction incentive is calculated based on the activity profits (exploitation profits) and considers the allocation of the operating profit based on the incentive production levels for each product.

Area/Regions

Company

Maturity

Northeast Development Superintendence (“SUDENE”)

Aracruz (ES)

Portocel

2030

Aracruz (ES)

Suzano

2031

Imperatriz (MA)

Suzano

2032

Mucuri (BA)

Suzano

2032

São Luís (MA)

Itacel

2033

Eunápolis (BA)

Veracel

2033

Superintendence of Amazon Development (“SUDAM”)

Belém (PA)

Suzano

2025

12.4 OECD PILLAR TWO MODEL RULES

In December 2021, the Organisation for Economic Co-operation and Development (“OECD”) announced the guidelines for the Pillar Two model, aiming for a reform in international corporate taxation to ensure that multinational economic groups, covered by such regulations, contribute an effective minimum tax at a rate of 15% on profits. Each country's effective profit tax rate, as calculated by this model, is called the GloBE (Global Anti-Base Erosion Rules) effective tax rate. These rules await approval in the local legislation of each country. In the context of Suzano, compliance with OECD guidelines on international taxation is a strategic priority.

Many countries have already released legislation or plans on the adoption of Pillar Two rules and the calculation of GloBE revenue, considering the global minimum rate of 15% for multinationals with consolidated revenue above EUR750 million.

Since 2024, the Company has been subject to these new rules in certain European jurisdictions where it operates, with Austria standing out as a relevant operation.

And as of 2025, the Company is subject to the Additional Social Contribution on Net Income (CSLL), which is the Brazilian legislation's response to the GloBE rules and affects business groups with an IRPJ and CSLL tax burden of less than 15% in Brazil.

Based on the calculations performed under the GloBE Simplifying Transition Rules (RSGT), no impact on the financial statements is anticipated in relation to this matter.

The Company reaffirms its commitment to tax compliance and will continue to carry out the necessary actions to ensure the proper implementation of the new rule in the jurisdictions where it operates, in line with global best practices and current legislation.

Biological assets

3 Months Ended

Mar. 31, 2025

Disclosure of detailed information about biological assets [abstract]

Disclosure of detailed information about biological assets [text block]

13 BIOLOGICAL ASSETS

The roll-forward of biological assets is as set forth below:


	03/31/2025	12/31/2024
Opening balance	22,283,001	18,278,582
Additions	1,836,180	7,180,450
Additions of merged companies		366,785
Depletions	(1,234,226)	(4,831,916)
Transfers	15,233	102,790
Gain on fair value adjustments		1,431,530
Disposals	(6,356)	(130,922)
Write-offs	(32,277)	(114,298)
Closing balance	22,861,555	22,283,001

The Company reevaluates, on a semi-annual basis in June and December, the main assumptions used in measuring the fair value of biological assets, which are disclosed in Note 13 of the annual financial statements for the year ended December 31, 2024.

The Company manages the financial and climate risks related to its agricultural activities in a preventive manner. To reduce the risks arising from edaphoclimatic factors, the weather is monitored through meteorological stations and, in the event of pests and diseases, our Department of Forestry Research and Development, an area specialized in physiological and phytosanitary aspects, has procedures to diagnose and act rapidly against any occurrences and losses (Note 4.8).

The Company has no biological assets pledged as collateral on March 31, 2025 and December 31, 2024.

Investments

3 Months Ended

Mar. 31, 2025

Investments [Abstract]

Disclosure of investments accounted for using equity method [text block]

14 INVESTMENTS

14.1 Investments breakdown


	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

14.2 Investments 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.

Property, plant and equipment

3 Months Ended

Mar. 31, 2025

Disclosure of detailed information about property, plant and equipment [abstract]

Disclosure of property, plant and equipment [text block]

15 PROPERTY, PLANT AND EQUIPMENT


	Land	Buildings	Machinery, equipment and facilities	Work in progress	Other (1)	Total
Average rate %		3.17	7.29		19.89
Accumulated cost	14,859,189	10,032,317	48,456,537	17,485,109	1,491,663	92,324,815
Accumulated depreciation		(4,125,823)	(27,918,585)		(991,338)	(33,035,746)
Balances at December 31, 2023	14,859,189	5,906,494	20,537,952	17,485,109	500,325	59,289,069
Additions	697	558	415,147	7,490,762	28,904	7,936,068
Acquisition of subsidiaries	1,699,588	775	413		1,992	1,702,768
Write-offs	(10,724)	(7,455)	(118,499)		(9,324)	(146,002)
Depreciation		(366,398)	(3,214,550)		(222,993)	(3,803,941)
Transfers and other	226,598	3,988,619	16,660,035	(21,465,336)	598,162	8,078
Accumulated cost	16,775,348	13,816,631	62,822,096	3,510,535	1,806,592	98,731,202
Accumulated depreciation		(4,294,038)	(28,541,598)		(909,526)	(33,745,162)
Balances at December 31, 2024	16,775,348	9,522,593	34,280,498	3,510,535	897,066	64,986,040
Additions	3,211	7	100,643	1,121,983	6,056	1,231,900
Write-offs		(799)	(12,247)		(2,502)	(15,548)
Depreciation		(104,786)	(1,020,232)		(72,330)	(1,197,348)
Transfers and other	1,351	434,293	674,587	(1,171,314)	61,695	612
Accumulated cost	16,779,910	14,249,711	63,547,914	3,461,204	1,860,354	99,899,093
Accumulated depreciation		(4,398,403)	(29,524,665)		(970,369)	(34,893,437)
Balances at March 31, 2025	16,779,910	9,851,308	34,023,249	3,461,204	889,985	65,005,656

(1)Includes vehicles, furniture and utensils and computer equipment.

On March 31, 2025, the Company evaluated the business, market and climate impacts, and did not identify any event that indicated the need to perform an impairment test and to record any impairment provision for property, plant and equipment.

15.1 Items pledged as collateral

On March 31, 2025, property, plant and equipment items pledged as collateral, consisting mainly of the units of Ribas do Rio Pardo, Três Lagoas and Imperatriz are set forth below:


	Type of collateral	3/31/2025	12/31/2024
Land	Financial/Legal	24,427	24,427
Buildings	Financial	1,757,860	1,755,082
Machinery, equipment and facilities	Financial	20,158,141	20,442,189
Work in progress	Financial	413,767	427,998
Other	Financial	39,826	43,487
		22,394,021	22,693,183

15.2 Capitalized expenses

For the three-month period ended March 31, 2025, the Company capitalized loan costs in the amount of R$52,753 (R$959,967 as of December 31, 2024). The weighted average interest rate, adjusted by the equalization of the exchange rate effects, utilized to determine the capitalized amount was 12.10% p.a. (11.17% p.a. as of December 31, 2024).

15.3 Asset Retirement Obligation (ARO)

On March 31, 2025, the Company has provisioned the amount of R$66,445 (R$65,327 as of December 31, 2024) arising asset retirement obligation of industrial landfills.

Intangible

3 Months Ended

Mar. 31, 2025

Disclosure of detailed information about intangible assets [abstract]

Disclosure of intangible assets and goodwill [text block]

16 INTANGIBLE

16.1 Goodwill and intangible assets with indefinite useful lives


	03/31/2025	12/31/2024
Goodwill - Facepa	119,332	119,332
Goodwill - Fibria	7,897,051	7,897,051
Goodwill - MMC Brasil	170,859	170,859
Other (1)	5,097	5,097
	8,192,339	8,192,339

(1)Refers to other intangible assets with indefinite useful lives such as servitude of passage and electricity.

The goodwill is based on expected future profitability supported by valuation reports, after the purchase price allocation.

Goodwill is allocated to cash-generating units as presented in Note 28.4.

For the three-month period ended March 31, 2025, the Company did not identify any event that indicated the need to perform the impairment test and to record any impairment provision for intangible assets.

16.2 Intangible assets with limited useful lives


		03/31/2025	12/31/2024
Opening balance		5,709,964	6,557,009
Additions		11,836	161,779


Amortization		(250,523)	(1,008,824)

Closing balance		5,471,277	5,709,964
Represented by	Average rate %
Non-competition agreements	5.00	4,430	4,508
Port concessions	3.94	644,282	632,253

Supplier agreements	12.66	22,221	25,925
Port service contracts	4.23	513,119	520,459
Cultivars	14.28	15,293	20,391
Trademarks and patents	8.35	166,419	170,306
Customer portfolio	9.09	3,899,654	4,104,900
Supplier agreements	17.64	232	295
Software	20.80	193,822	201,476
Other	10.00	11,805	29,451
		5,471,277	5,709,964

Cost		12,552,386	12,540,497
Amortization		(7,081,109)	(6,830,533)
Closing balance		5,471,277	5,709,964

Trade accounts payable

3 Months Ended

Mar. 31, 2025

Subclassifications of assets, liabilities and equities [abstract]

Trade payable and others explanatory

17 TRADE ACCOUNTS PAYABLE


	03/31/2025	12/31/2024
In local currency
Third party (1)	4,139,345	4,681,065
Related party (Note 11.1) (2)	2,985	1,457
In foreign currency
Third party	1,527,479	1,350,763
	5,669,809	6,033,285

(1)Within the balance of suppliers, there are values under supplier finance arrangement that were subject to anticipation with financial institutions at the exclusive option of certain suppliers, without changing the originally defined purchase conditions (payment terms and negotiated prices). The balance related to such operations on March 31, 2025 was R$429,166 (R$555,063 at December 31, 2024).

(2)The balance refers mainly to transactions with Ibema Companhia Brasileira de Papel.

Loans, financing and debentures

3 Months Ended

Mar. 31, 2025

Disclosure of detailed information about borrowings [abstract]

Disclosure of borrowings [text block]

18 LOANS, FINANCING AND DEBENTURES

18.1 Breakdown by type


					Current		Non-current			Total
Type	Currency	Interest rate	Average annual interest rate - %		03/31/2025	12/31/2024	03/31/2025	12/31/2024	03/31/2025	12/31/2024
In foreign currency

Bonds	USD	Fixed	5.0	%	368,085	3,229,641	45,691,405	49,166,804	46,059,490	52,396,445
Panda Bonds	CNY	Fixed	2.8	%	9,581		948,655		958,236
Export credits (“export prepayments”)	USD	SOFR/Fixed	5.4	%	2,153,304	6,236,806	16,983,690	16,283,736	19,136,994	22,520,542
Assets financing	USD	SOFR	3.3	%	6,479	137,300	713,766	298,252	720,245	435,552
ECA - Export Credit Agency	USD	SOFR	5.8	%	108,292	7,297	269,563	769,702	377,855	776,999
IFC - International Finance Corporation (1)	USD	SOFR	5.6	%	(3,046)	(12,051)	5,398,827	5,858,208	5,395,781	5,846,157
Others					7,910	4,210	4,226	4,455	12,136	8,665
					2,650,605	9,607,427	70,010,132	73,397,488	72,660,737	83,004,915
In local currency
BNDES	BRL	UMBNDES	6.8	%	417		157,555		157,972
BNDES	BRL	TJLP	8.7	%	98,893	100,556	76,811	101,587	175,704	202,143
BNDES	BRL	TLP	14.5	%	99,780	94,903	4,665,467	4,607,102	4,765,247	4,702,005

BNDES	BRL	SELIC	17.4	%	251,304	243,223	663,562	704,825	914,866	948,048

BNDES	BRL	TR	2.2	%	1,110		68,998		70,108
Assets financing	BRL	CDI	17.0	%	18,514	18,427	52,307	56,956	70,821	75,383
NCE (“Export credit notes”)	BRL	CDI	17.6	%	3,486	3,027	100,000	100,000	103,486	103,027
NCR (“Rural producer certificates”)	BRL	CDI	14.8	%	39,854	312,652	2,000,000	2,000,000	2,039,854	2,312,652

Debentures	BRL	CDI/IPCA	15.2	%	264,647	120,931	9,819,129	9,738,616	10,083,776	9,859,547
					778,005	893,960	17,603,829	17,536,656	18,381,834	18,430,616
					3,428,610	10,501,387	87,613,961	90,934,144	91,042,571	101,435,531

Interest on financing					911,672	1,541,312			911,672	1,541,312
Non-current funding					2,516,938	8,960,075	87,613,961	90,934,144	90,130,899	99,894,219
					3,428,610	10,501,387	87,613,961	90,934,144	91,042,571	101,435,531

(1) The balances shown as negative correspond to fundraising costs

18.2 Breakdown by maturity - non-current


	2026	2027	2028	2029	2030	2031 onwards	Total
In foreign currency
Bonds	2,968,093	4,011,716	2,852,225	10,018,435	5,660,739	20,180,197	45,691,405
Panda Bonds (1)		948,655					948,655
Export credits (“export prepayments”)	1,224,473	3,594,061	3,583,133	4,807,933	3,062,507	711,583	16,983,690
Assets financing	83,169	111,553	68,475	6,366			269,563
ECA - Export Credit Agency (1)						713,766	713,766
IFC - International Finance Corporation (1)		290,300	1,477,021	2,400,463	1,231,043		5,398,827

	4,275,735	8,956,285	7,980,854	17,233,197	9,954,289	21,605,546	70,005,906
In local currency
BNDES – TJLP	65,250	3,651	3,651	3,651	608		76,811
BNDES – TLP	80,906	161,927	159,092	144,920	372,599	3,746,023	4,665,467

BNDES – SELIC	198,744	35,645	35,645	35,645	35,645	322,238	663,562

BNDES – TR	3,161	4,734	4,734	4,734	4,734	46,901	68,998
BNDES - UMBNDES	4,258	8,516	8,516	8,516	8,516	119,233	157,555
Assets financing	14,092	19,114	19,034	67			52,307
NCE (“Export credit notes”)		25,000	25,000	25,000	25,000		100,000
NCR (“Rural producer certificates”)					2,000,000		2,000,000

Debentures (1)			749,193		540,490	8,529,446	9,819,129
	366,411	258,587	1,004,865	222,533	2,987,592	12,763,841	17,603,829
	4,642,146	9,214,872	8,985,719	17,455,730	12,941,881	34,369,387	87,609,735

(1) The balances shown as negative correspond to fundraising costs, which are amortized on a straight-line basis.

18.3 Roll-forward of loans, financing and debentures


	03/31/2025	12/31/2024
Opening balance	101,435,531	77,172,692
Fundraising, net of issuance costs	7,055,244	15,692,905
Interest accrued	1,412,878	5,413,707
Monetary and exchange rate variation, net	(5,702,984)	17,728,324
Settlement of principal	(11,175,521)	(9,410,807)
Settlement of interest	(2,014,500)	(5,241,389)
Amortization of fundraising costs	31,923	80,099

Closing balance	91,042,571	101,435,531

18.4 Fundraising costs

The fundraising costs are amortized based on the terms of agreements and the effective interest rate.


			Balance to be amortized
Type	Cost	Amortization	03/31/2025	12/31/2024
Bonds	434,970	286,460	148,510	168,450


Export credits (“export prepayments”)	273,989	181,400	92,589	63,080
Debentures	159,675	35,813	123,862	125,663
BNDES	81,730	56,686	25,044	25,777

IFC - International Finance Corporation	81,956	12,533	69,423	78,719
Others	20,912	14,884	6,028	6,799
	1,053,232	587,776	465,456	468,488

18.5 Guarantees

Some loan and financing agreements have guarantees clauses, in which the financed equipment or other property, plant and equipment is offered as collateral by the Company, as disclosed in Note 15.1.

The Company does not have contracts with restrictive financial clauses (financial covenants) which must be complied with.

18.6 Relevant transactions entered into during the period

18.6.1 Export Prepayment

On March 10, 2025, the Company raised, with several banks (a syndicated operation), an export prepayment ("PPE"), in the amount of US$1,200,000 (equivalent to R$6,951,600), at a floating rate based on the 3-month SOFR Term +1.45% p.a, maturing in March 2031.

18.6.2 Advance of exchange contract (“ACC”)

On January 22, 2025, the Company raised an Advance on Foreign Exchange Contract ("ACC") from Itaú Unibanco in the amount of US$10,000 (equivalent to R$59,175), indexed at a fixed rate of 6.43% p.a, maturing on January 19, 2026.

On March 5, 2025, the Company raised an ACC from Banco do Brasil in the amount of US$10,000 (equivalent to R$57,950), indexed at a fixed rate of 5.8% p.a, maturing on March 2, 2026.

18.7 Significant transactions settled during the period

On March 10, 2025, the Company made an early partial settlement of an export prepayment with various banks (syndicated operation), totaling US$1,486,064 (equivalent to R$8,608,769, including principal and interest). The residual amount of the operation maintained its original maturity in March 2027 with a floating rate of SOFR + 1.4% p.a.

On January 14, 2025, the Company settled, as due, a bond with a 4.00% p.a cost, a market-based operation, in the amount of US$346,445 (equivalent to R$2,101,917, including principal and interest).

On March 24, 2025, the Company settled a Rural Producer Note (CPR) with Banco Safra, in the amount of R$221,942 (including principal and interest). The maturity of the CPR was in March 2025, with an interest rate of 100.00% of the CDI p.a.

Leases

3 Months Ended

Mar. 31, 2025

Presentation of leases for lessee [abstract]

Disclosure of leases [text block]

19 LEASES

19.1 Right of use

The balances rolled-forward are set out below:


	Lands	Machinery and equipment	Buildings	Ships and boats	Vehicles	Total
Balances at December 31, 2023	3,380,298	184,813	127,432	1,498,228	5,860	5,196,631
Additions/updates	506,373	157,542	41,235		39,076	744,226
Depreciation (1)	(408,000)	(167,312)	(54,275)	(124,890)	(2,587)	(757,064)
Write-offs (2)	(3,102)					(3,102)
Balances at December 31, 2024	3,475,569	175,043	114,392	1,373,338	42,349	5,180,691
Additions/updates	229,525	11,502	25,690			266,717
Depreciation (1)	(108,410)	(40,571)	(13,238)	(31,223)	(4,365)	(197,807)

Balances at March 31, 2025	3,596,684	145,974	126,844	1,342,115	37,984	5,249,601

(1)The amount of depreciation related to land is substantially reclassified to biological assets to make up the formation costs.

(2)Write-off due to cancellation of contracts.

On March 31, 2025, the Company does not have commitments to lease agreements not yet in force.

19.2 Lease liabilities

The balance of lease payables on March 31, 2025, measured at present value and discounted at the respective discount rates are set forth below:


Nature of agreement	Average rate - % p.a. (1)	Maturity (2)	Present value of liabilities
Lands and farms	12.27	May/2052	4,041,182
Machinery and equipment	11.19	July/2032	244,318
Buildings	10.75	March/2031	125,318
Ships and boats	11.25	February/2039	2,408,213
Vehicles	11.10	November/2028	32,488
			6,851,519

(1)To determine the discount rates, quotes were obtained from financial institutions for agreements with characteristics and average terms similar to the lease agreements.

(2)Refers to the original maturities of the agreements and, therefore, does not consider eventual renewal clauses.

The balances rolled-forward are set out below:


	03/31/2025	12/31/2024
Opening balance	6,972,915	6,243,782
Additions	266,717	744,226
Write-offs (2)		(3,102)
Payments	(371,531)	(1,325,398)
Accrual of financial charges (1)	182,458	700,283
Exchange rate variations	(199,040)	613,124
Closing balance	6,851,519	6,972,915

Current	870,322	872,228
Non-current	5,981,197	6,100,687

(1)On March 31, 2025, the amount of R$66,200 related to interest expenses on leased lands was capitalized to biological assets to represent the formation cost (R$223,055 as of December 31, 2024).

(2)Write-off due to cancellation of contracts.

The maturity schedule for future payments not discounted to present value related to lease liabilities is disclosed in Note 4.2.

19.2.1 Amounts recognized in the statement of income for the period

The amounts recognized are set out below:


	03/31/2025	03/31/2024
Expenses relating to short-term assets	672	1,084
Expenses relating to low-value assets	18	424
	690	1,508

Provision for judicial liabilities

3 Months Ended

Mar. 31, 2025

Disclosure of other provisions [abstract]

Disclosure of other provisions, contingent liabilities and contingent assets [text block]

20 PROVISION FOR JUDICIAL LIABILITIES

The Company is involved in certain legal proceedings arising in the normal course of its business, which include tax, social security, labor, civil, environment and real estate.

The Company classifies the risk of unfavorable decisions in legal proceedings, based on legal advice, which reflects the estimated probable losses.

The Company’s Management believes that, based on the available information as of the date of these unaudited condensed consolidated interim financial information, its provisions for tax, social security, labor, civil, environment and real estate risks, accounted for according to IAS 37 are sufficient to cover estimated losses related to its legal proceedings, as set forth below:

20.1 Roll-forward and changes in the provisions for probable losses based on the nature of the proceedings, net of judicial deposits


					03/31/2025
	Tax and social security	Labor	Civil, environment and real estate	Contingent liabilities assumed (1) (2)	Total
Provision balance at the beginning of the period	407,964	353,926	215,553	2,127,725	3,105,168
Payments	(58,974)	(27,512)	(1,422)		(87,908)
Reversal	(10,885)	(4,884)		(1,703)	(17,472)
Additions	2,038	33,134	9,582		44,754
Monetary adjustment	4,519	6,362	9,446		20,327
Provision balance	344,662	361,026	233,159	2,126,022	3,064,869
Judicial deposits	(4,234)	(95,578)	(21,621)		(121,433)
Provision balance at the end of the period	340,428	265,448	211,538	2,126,022	2,943,436

(1)Amounts arising from tax-related lawsuits with a possible or remote probability of loss in the amount of R$1,992,741 and civil lawsuits in the amount of R$133,281, measured and recorded at the estimated fair value resulting from the business combination with Fibria.

(2)Reversal due to a change in likelihood, cancellation and/or due to settlement.


					12/31/2024
	Tax and social security	Labor	Civil, environment and real estate	Contingent liabilities assumed (1) (2)	Total
Provision balance at the beginning of the year	468,839	349,058	139,435	2,155,545	3,112,877
Payments	(60,081)	(89,221)	(6,795)		(156,097)
Reversal	(9,540)	(89,941)	(1,951)	(27,820)	(129,252)
Additions	4,689	162,456	72,605		239,750
Monetary adjustment	4,057	21,574	12,259		37,890
Provision balance	407,964	353,926	215,553	2,127,725	3,105,168
Judicial deposits	(66,746)	(91,596)	(20,076)		(178,418)
Provision balance at the end of the year	341,218	262,330	195,477	2,127,725	2,926,750

(1)Amounts arising from tax-related lawsuits with a possible or remote probability of loss in the amount of R$2,448,564 and civil lawsuits in the amount of R$197,141, measured and recorded at the estimated fair value resulting from the business combination with Fibria.

(2)Reversal due to a change in likelihood, cancellation and/or due to settlement.

20.1.1 Tax and social security

On March 31, 2025, the Company has 54 (58 as of December 31, 2024) administrative and judicial proceedings of a tax or social security nature in which the disputed matters are related to IRPJ, CSLL, PIS, COFINS, ICMS among others, whose amounts are provisioned when the likelihood of loss is deemed probable by the Company’s external legal counsel and by Management.

20.1.2 Labor

On March 31, 2025, the Company has 1,094 (1,178 as of December 31, 2024) labor lawsuits.

In general, the provisioned labor proceedings are related primarily to matters frequently contested by employees of agribusiness companies, such as wages and/or severance payments, in addition to suits filed by outsourced employees of the Company.

20.1.3 Civil, environment and real estate

On March 31, 2025, the Company has 101 (97 as at December 31, 2024) civil, environmental and real estate proceedings.

The provisioned Civil, environment and real estate proceedings are related primarily to the payment of damages, including those arising from contractual obligations, traffic-related injuries, possessory actions, environmental restoration obligations, claims and others.

20.2 Contingencies with possible losses

The Company is involved in tax, civil and labor lawsuits, whose losses have been assessed as possible by Management, supported by legal counsel, and therefore no provision was recorded:


	03/31/2025	12/31/2024
Taxes and social security (1)	9,942,885	9,837,082
Labor	177,780	171,480
Civil and environmental (1) (2)	1,016,611	5,065,714
	11,137,276	15,074,276

(1)The amounts above do not include the fair value adjustments allocated to possible loss risk contingencies representing R$2,106,933 (R$2,135,869 as of December 31, 2024), which were recorded at fair value resulting from business combinations with Fibria, as presented in Note 20.1.1 above.

(2)As disclosed in the annual financial statements, note 20.2.3(i), the Company is a defendant in a Public Civil Action (“ACP”) regarding compensation for damages caused to federal highways due to the transportation of timber exceeding the permitted weight. Based on a recent decision by the Superior Court of Justice (“STJ”), which established the thesis of civil liability without clear and objective liquidation criteria, as well as the change of the monetary correction index from IGPM/FGV to SELIC, the Company reassessed the exposure amount of this action to approximately R$ 340 million. This estimate made by management and supported by its external legal advisors, is based on scenarios with similarity to infraction notices suffered by other companies and assessed according to the quantification criteria applied by the Federal Public Ministry (“MPF”). Given the absence of clear and objective criteria for measuring such claims from the MPF in similar cases, management’s current estimate may vary to a higher or lower amount, subject to the final decision by the MPF/TRF1 regarding the Company's case.

In the three-month period ended March 31, 2025, there were no significant changes in the main nature of these contingencies compared to those disclosed in the annual financial statements for the year ended December 31, 2024 (Note 20.1).

Employee benefits plans

3 Months Ended

Mar. 31, 2025

Disclosure of information about defined benefit plans [abstract]

Disclosure of employee benefits [text block]

21 EMPLOYEE BENEFIT PLANS

The Company provides supplementary pension plan and defined benefit plan, such as medical assistance and life insurance. The characteristics of such benefits were disclosed in the annual financial statements for the year ended December 31, 2024 (Note 21), which did not change during the three-month period ended March 31, 2025.

21.1 Pension plan

Contributions made by the Company, for Suzano Prev pension plan managed by Brasilprev Seguros e Previdência S.A., for the three-month period ended March 31, 2025 amounted R$5,745 (R$5,111 as of March 31, 2024) recognized under the cost of sales, selling and general and administrative expenses.

21.2 Defined benefits plan

The Company offers the medical assistance and life insurance in addition to the pension plans, which are measured based on actuarial calculations and recognized in the unaudited condensed consolidated interim financial information.

The roll-forward of actuarial liabilities prepared based on actuarial report is set forth below:


	03/31/2025	12/31/2024
Opening balance	721,560	833,683
Interest on actuarial liabilities	19,337	73,853
Current service cost	485	1,997
Actuarial loss – experience		(125)
Actuarial loss (gain) – financial assumptions		(137,649)
Benefits paid directly by entity	(11,350)	(50,199)
Closing balance	730,032	721,560

Share-based compensation plan

3 Months Ended

Mar. 31, 2025

Disclosure of terms and conditions of share-based payment arrangement [abstract]

Disclosure of share-based payment arrangements [text block]

22 SHARE-BASED COMPENSATION PLAN

The Company has long-term share-based remuneration plans: (i) Phantom stock option plan (“PS”), settled in cash; and (ii) Performance Share Plan, settled in shares.

The characteristics and measurement method of each plan were disclosed in the annual financial statements for the year ended December 31, 2024 (Note 22), which did not change during the three-month period ended March 31, 2025.

22.1 Phantom shares plan (“PS”)

The roll-forward arrangements are set out below:


		Number of shares
Year of grant	Fair value on grant date	31/12/2024	Granted during of the year	Cancelled	Exercised (1)	31/03/2025	Available for completion	Restricted year for transfer of shares
								2025	2026	2027	2028
2020	R$38.50	33,384	1,083			34,467	34,467
2021	R$62.25	874,480	28,375	(13,046)	(358,000)	531,809	404,570	127,239
2022	R$57.48	3,461,437	112,251	(98,593)	(979,322)	2,495,773		2,148,353	323,447	23,973
2023	R$48.84	3,052,179	98,965	(95,361)	(63,225)	2,992,558		29,253	2,670,308	292,997
2024	R$56.53	2,675,017	86,665	(46,819)	(37,191)	2,677,672			2,987	2,476,946	197,739
2025	R$60.53		1,683,347	(4,095)	(17,401)	1,661,851					1,661,851
		10,096,497	2,010,686	(257,914)	(1,455,139)	10,394,130	439,037	2,304,845	2,996,742	2,793,916	1,859,590

Book value		361,974	83,198		(83,277)	361,895
Book value of the previous year		268,489	173,486		(80,001)	361,974

(1)The average price of the share options exercised and exercised due to termination of employment on March 31, 2025 was R$60.25 (R$42.36 as at December 31, 2024).

22.2 Restricted shares plan (“Performance Shares”)

The position is set forth below:


		Number of stock options
Year of grant	Fair value on grant date	31/12/2024	Shares granted/provisioned	Exercised	31/03/2025	Restricted year for transfer of shares
						2025	2026	2027	2028	2029	2030
2022	R$53.81	115,800	3,758	(119,558)
2023	R$51.41	383,568	12,448		396,016		277,249	118,767
2024	R$55.77	2,480,743	80,509		2,561,252	348,417	227,697	312,564		1,672,574
2025	R$61.39		267,096		267,096				150,604		116,492
Number of stock options		2,980,111	363,811	(119,558)	3,224,364	348,417	504,946	431,331	150,604	1,672,574	116,492

Book value		60,226	11,038	(6,437)	64,827
Book value of the previous year		26,744	81,276	(47,794)	60,226

Liabilities for assets acquisitions and subsidiaries

3 Months Ended

Mar. 31, 2025

Notes and other explanatory information [abstract]

Liabilities for Assets Acquisitions and Subsidiaries


	03/31/2025	12/31/2024



Business combinations
Facepa (1)	27,725	27,182
Vale Florestar Fundo de Investimento em Participações ("VFFIP") (2)	87,699	93,308

	115,424	120,490

Current	20,877	21,166
Non-current	94,547	99,324

(1)Acquired in March 2018, for the amount of R$307,876, upon the payment of R$267,876, with the remainder updated at the IPCA, adjusted for possible losses incurred up to the payment date, with maturity in March 2028.

(2)On August 2014, the Company acquired Vale Florestar S.A. through VFFIP, with maturity up to August 2029. The annual settlements, carried out in the month of August, are subject to interest and updated by the variations of the US$ exchange rate, and partially updated by the IPCA.

Shareholders equity

3 Months Ended

Mar. 31, 2025

Disclosure of classes of share capital [abstract]

Disclosure of share capital, reserves and other equity interest [text block]

24 SHAREHOLDERS’ EQUITY

24.1 Share capital

On March 31, 2025, Suzano’s share capital was R$19,269,281 divided into 1,264,117,615 common shares, all nominative, book-entry shares without par value. Expenses related to the public offering were R$33,735, totaling a net share capital of R$19,235,546. The breakdown of the share capital is as set out below:


	03/31/2025		12/31/2024
	Quantity	(%)	Quantity	(%)
Controlling Shareholders
Suzano Holding S.A.	367,612,329	29.08	367,612,329	29.08
Controller	196,065,636	15.51	196,065,636	15.51
Managements and related persons	31,903,998	2.52	32,784,440	2.59
Alden Fundo de Investimento em Ações	27,154,744	2.15	26,154,744	2.07
	622,736,707	49.26	622,617,149	49.25
Treasury (Note 24.2)	25,455,929	2.01	24,875,787	1.97
Other shareholders	615,924,979	48.73	616,624,679	48.78
	1,264,117,615	100.00	1,264,117,615	100.00

On March 31, 2025, SUZB3 common shares ended the period quoted at R$52.94 and R$61.78 on December 31, 2024.

24.2 Treasury shares

On March 31, 2025, the Company had 25,455,929 (24,875,787 as of December 31, 2024) of its own common shares held in treasury, with an average cost of R$53.87 per share, with a historical value of R$1,371,424 (R$1,339,197 as at December 31, 2024) and the market corresponding to R$1,347,637 (R$1,536,826 as at December 31, 2024).

For the three-month period ended March 31, 2025, the Company granted 119,558 common shares at an average cost of R$53.84 per share, with a historical value of R$6,437, to comply with the restricted shares plan (Note 22.2).


	Quantity	Average cost per share	Historical value	Market value
Balances at December 31, 2023	34,765,600	42.69	1,484,014	1,934,010
Exercised (note 22.2)	(1,005,113)	47.55	(47,794)	(54,213)
Repurchase	51,115,300	54.91	2,806,764	2,806,764
Canceled	(60,000,000)	48.40	(2,903,787)	(3,238,200)
Balances at December 31, 2024	24,875,787	53.84	1,339,197	1,536,826
Exercised (note 22.2)	(119,558)	53.84	(6,437)	(6,577)
Repurchase	699,700	55.26	38,664	38,664

Balances at March 31, 2025	25,455,929	53.87	1,371,424	1,347,637

Earnings per share

3 Months Ended

Mar. 31, 2025

Earnings per share [abstract]

Earnings per share [text block]

25 EARNINGS PER SHARE

25.1 Basic

The basic earnings per share is measured by dividing the profit attributable to the Company’s shareholders by the weighted average number of common shares issued during the period, excluding the common shares acquired by the Company and held as treasury shares.


	03/31/2025	03/31/2024
Net income for the period attributed to Controlling shareholders'	6,340,760	215,392
Weighted average number of shares in the period – in thousands	1,264,118	1,309,612
Weighted average treasury shares – in thousands	(25,047)	(24,110)
Weighted average number of outstanding shares – in thousands	1,239,071	1,285,502
Basic earnings per common share – R$	5.11735	0.16755

25.2 Diluted

The diluted earnings per share is measured by adjusting the weighted average of outstanding common shares, assuming the conversion of all common shares with dilutive effects.


	03/31/2025	03/31/2024
Net income for the period attributed to Controlling shareholders'	6,340,760	215,392
Weighted average number of shares during the period (except treasury shares) – in thousands	1,239,071	1,285,502
Average number of potential shares (stock options) - in thousands	3,171	664
Weighted average number of shares (diluted) – in thousands	1,242,242	1,286,166
Diluted earnings per common share – R$	5.10429	0.16747

Net financial results

3 Months Ended

Mar. 31, 2025

Notes and other explanatory information [abstract]

Disclosure of financial results

26 NET FINANCIAL RESULT


	03/31/2025	03/31/2024
Financial expenses
Interest on loans, financing and debentures (1)	(1,360,125)	(853,289)
Amortization of transaction costs	(31,923)	(17,308)
Interest expenses on lease liabilities (2)	(116,258)	(109,806)

Other	(131,779)	(149,997)
	(1,640,085)	(1,130,400)

Financial income
Cash and cash equivalents and marketable securities	348,428	409,192
Other	90,425	15,025
	438,853	424,217
Results from derivative financial instruments
Income	4,224,351	716,512
Expenses	(531,192)	(1,351,049)
	3,693,159	(634,537)
Monetary and exchange rate variations, net
Exchange rate variations on loans, financing and debentures	5,702,984	(2,071,835)
Leases	199,040	(71,671)
Other assets and liabilities (3)	(697,738)	444,178
	5,204,286	(1,699,328)
Net financial result	7,696,213	(3,040,048)

(1)Excludes R$52,753 arising from capitalized loan costs, substantially related to property, plant and equipment in progress of the Cerrado Project for the three-month period ended March 31, 2025 (R$377,560 as at March 31, 2024).

(2)Includes R$66,200 referring to the reclassification to the biological assets item for the composition of the formation cost (R$223,055 as of March 31, 2024).

(3)Includes effects of exchange rate variations of trade accounts receivable, trade accounts payable, cash and cash equivalents, marketable securities and others.

Net sales

3 Months Ended

Mar. 31, 2025

Notes and other explanatory information [abstract]

Disclosure of disaggregation of revenue from contracts with customers [text block]

27 NET SALES


	03/31/2025	03/31/2024
Gross sales	13,931,964	11,434,047
Sales deductions
Returns and cancellations	(36,433)	(54,357)
Discounts and rebates	(1,812,315)	(1,394,942)
	12,083,216	9,984,748
Taxes on sales	(530,295)	(526,146)
Net sales	11,552,921	9,458,602

Segment information

3 Months Ended

Mar. 31, 2025

Notes and other explanatory information [abstract]

Disclosure of entity's operating segments [text block]

28.1 Criteria for identifying operating segments

The Board of Directors and Board of Statutory Executive Officers evaluate the performance of the Company’s business segments through the Adjusted EBITDA. The Company has revised the segment note to present Adjusted EBITDA as its performance measure.

The operating segments defined by the Company’s management are set forth below:

i)Pulp: comprised of the production and sale of hardwood eucalyptus pulp and fluff pulp, mainly to supply the foreign market.

ii)Paper: comprises the production and sale of paper to meet the demands of both the domestic and foreign markets. Consumer goods (tissue) sales are classified under this segment due to their immateriality.

Information related to total assets by reportable segment is not disclosed, as it is not included in the set of information made available to the Company’s management, which makes investment decisions and determines the allocation of resources on a consolidated basis.

In addition, with respect to geographical information related to non-current assets, the Company does not disclose such information, as all property, plant and equipment, biological and intangible assets are substantially in Brazil.

28.2 Information of operating segments


	03/31/2025
	Pulp	Paper	Total
Net sales	8,611,543	2,941,378	11,552,921
Domestic market (Brazil)	457,416	1,691,196	2,148,612
Foreign market	8,154,127	1,250,182	9,404,309
Cost of sales	(5,696,157)	(2,033,010)	(7,729,167)

Adjusted EBITDA	4,254,146	611,628	4,865,774
Adjustments to EBITDA (*)			(109,317)
Depreciation, depletion and amortization			(2,497,422)
Financial result			7,696,213
Net income before taxes			9,955,248


	03/31/2024
	Pulp	Paper	Total
Net sales	7,359,846	2,098,756	9,458,602
Domestic market (Brazil)	486,168	1,572,490	2,058,658
Foreign market	6,873,678	526,266	7,399,944
Cost of sales	(4,374,903)	(1,324,967)	(5,699,870)

Adjusted EBITDA	3,902,250	655,656	4,557,906
Adjustments to EBITDA (*)			(23,656)
Depreciation, depletion and amortization			(1,982,024)
Financial result			(3,040,048)
Net before taxes			(487,822)


	03/31/2025	03/31/2024
(*) Adjustments to EBITDA
Fair Value Update - Biological Asset		—
Income from disposal and write-off of property, plant and equipment and biological assets	(46,306)	(36,312)
Provision/(reversals) for losses on ICMS credits	(45,765)	23,763
Others (1)	(17,246)	(11,107)
	(109,317)	(23,656)

(1) It includes items with specific, non-cash and exceptional adjustments, such as: i) equity equivalence, ii) extinction of the packaging business line, iii) effective loss of the development contract advance program, iv) accruals for losses on ICMS credits, and v) income from disposal and write-off of property, plant and equipment and biological assets.

28.3 Net sales by product


	03/31/2025	03/31/2024
Products
Market pulp (1)	8,611,543	7,359,846
Printing and writing paper (2)	1,879,301	1,780,944
Paperboard	1,051,768	298,190
Other	10,309	19,622
	11,552,921	9,458,602

(1)Net sales of fluff pulp represent 0.6% of total net sales, and therefore were included in market pulp net sales. (0.7% as at March 31, 2024).

(2)Net sales of tissue represent 6.0% of total net sales, and therefore were included in printing and writing paper net sales. (6.7% as at March 31, 2024).

28.4 Goodwill based on expected future profitability

The goodwill based on expected future profitability arising from the business combination was allocated to the disclosable segments, which correspond to the Company's cash-generating units (“CGUs”), considering the economic benefits generated by such intangible assets. The allocation of goodwill is set out below:


	03/31/2025	12/31/2024
Pulp	7,897,051	7,897,051
Paper	290,191	290,191
	8,187,242	8,187,242

Income (expenses) by nature

3 Months Ended

Mar. 31, 2025

Analysis of income and expense [abstract]

Disclosure of expenses by nature [text block]

29 INCOME (EXPENSES) BY NATURE


	03/31/2025	03/31/2024
Cost of sales
Personnel expenses	(520,711)	(364,650)
Costs of raw materials, materials and services	(3,153,449)	(2,479,702)
Logistics cost	(1,296,365)	(1,063,930)
Depreciation, depletion and amortization	(2,223,588)	(1,706,401)
Other (1)	(535,054)	(85,187)
	(7,729,167)	(5,699,870)
Selling expenses
Personnel expenses	(90,189)	(72,670)
Services	(55,666)	(47,850)
Logistics cost	(340,905)	(272,620)
Depreciation and amortization	(241,026)	(238,962)
Other (2)	(27,096)	(21,313)
	(754,882)	(653,415)
General and administrative expenses
Personnel expenses	(403,006)	(320,672)
Services	(115,819)	(92,452)
Depreciation and amortization	(30,276)	(34,313)
Other (3)	(124,450)	(55,538)
	(673,551)	(502,975)
Other operating (expenses) income, net
Rents and leases	520	189
Results from sales of other products, net	26,967	24,486
Results from sales and disposals of property, plant and equipment, intangible and biological assets, net	(46,307)	(47,554)

Depletion, amortization and other PPA realizations (4)	(2,532)	(2,348)
Provision for judicial liabilities	(104,863)	(26,109)
Other operating income (expenses), net	7,006	11,127
	(119,209)	(40,209)

(1)Includes R$416,608 related to maintenance downtime costing (R$55,308 as at March 31, 2024).

(2)Includes expected credit losses, insurance, materials for use and consumption, travel, accommodation, trade fairs and events.

(3)Includes, substantially, corporate expenses, insurance, materials for use and consumption, social programs and donations, travel and accommodation.

General information about financial statements (Tables)

3 Months Ended

Mar. 31, 2025

Company´s Operations [Abstract]

Disclosure of subsidiaries


			% equity interest
Entity/Type of investment	Main activity	Country	03/31/2025		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 Ltd.	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 Ltd. (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 Ltd. (Direct)	Business office	China	100.00	%	100.00	%
Suzano Shanghai Trading Ltd. (Direct)	Financial fundraising	China	100.00	%	100.00	%
Suzano Singapura Pte. Ltd (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	03/31/2025		12/31/2024
Equity
Biomas Serviços Ambientais, Restauração e Carbono S.A. (Direct)	Restoration, conservation and preservation of forests	Brazil	16.66	%	16.66	%
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	5.00	%	5.00	%

Summary of Significant Accounting Policies (Tables)	3 Months Ended
Summary of Significant Accounting Policies (Tables)	Mar. 31, 2025
Summary of material accounting policies [Abstract]
New Accounting Pronouncements, Policy	3.1 New accounting policies and changes in accounting policies adopted The new standards and interpretations issued, until the issuance of the Company’s unaudited condensed consolidated interim financial information, are described below. 3.1.1 Amendments to IAS 21: Lack of interchangeability (applicable for annual on/or after January 1, 2025) The changes will create requirements for the entity to apply a consistent approach to assessing whether a currency is exchangeable for another currency and, when it is not, to determining the appropriate exchange rate to use and the disclosures to be made. In this context, exchangeability is considered non-existent when, for a given purpose, the entity is unable to obtain more than an insignificant amount of foreign currency. To this end, the entity evaluates: i.the timeliness of obtaining foreign currency; ii.the practical ability (and not the intention) to obtain foreign currency; It is iii.the available markets or exchange mechanisms that create enforceable rights and obligations. The Company assessed the content of this pronouncement and did not identify any impacts.

Financial instruments and risk management (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of detailed information about financial instruments [line items]

Financial Instruments - Classification


	Note	03/31/2025	12/31/2024
Assets
Amortized cost
Cash and cash equivalents	5	9,914,505	9,018,818
Marketable securities	6
Trade accounts receivable	7	6,354,237	9,132,860

Other assets (1)		540,009	628,275
		16,808,751	18,779,953
Fair value through other comprehensive income
Investments	14.1	1,006,820	1,138,066
		1,006,820	1,138,066
Fair value through profit or loss
Derivative financial instruments	4.5.1	4,132,330	3,887,100
Marketable securities	6	6,918,765	13,363,511
		11,051,095	17,250,611
		28,866,666	37,168,630
Liabilities
Amortized cost
Trade accounts payable	17	5,669,809	6,033,285
Loans, financing and debentures	18.1	91,042,571	101,435,531
Lease liabilities	19.2	6,851,519	6,972,915
Liabilities for assets acquisitions and subsidiaries	23	115,424	120,490
Dividends and interests on own capital payable		7,699	2,200,917
Other liabilities (1)		169,366	143,330
		103,856,388	116,906,468
Fair value through profit or loss
Derivative financial instruments	4.5.1	7,131,448	10,454,820
		7,131,448	10,454,820
		110,987,836	127,361,288
		82,121,170	90,192,658

Financial Instruments - Fair Value


	Yield used to discount/methodology	03/31/2025	12/31/2024
Quoted in the secondary market
In foreign currency
Bonds	Secondary Market	44,487,544	48,734,909
Estimated present value
In foreign currency
Export credits (“Prepayment”)	SOFR	21,383,389	22,740,891
Assets Financing	SOFR	395,806	422,115

IFC - International Finance Corporation	SOFR	6,233,706	6,261,715
ECA - Export Credit Agency	SOFR	859,549	864,202
Panda Bonds - CNH	Fixed	973,163	951,125


In local currency
BNDES – TJLP	DI 1	159,443	171,109
BNDES – TLP	DI 1	3,329,356	3,275,012

BNDES – TR	DI 1	34,070	33,466
BNDES – Selic (“Special Settlement and Custody System”)	DI 1	635,999	645,139
BNDES – UMBNDES	DI 2	104,408	106,966
Assets Financing	DI 1	58,807	60,566
Debentures	DI 1/IPCA	12,127,177	12,002,992
NCE (“Export Credit Notes”)	DI 1	107,507	108,308
NCR (“Rural Credit Notes”)	DI 1	2,146,140	2,424,457

		93,036,064	98,802,972

Financial Instrument - Liquidity risk


						03/31/2025
	Book value	Undiscounted cash flow	Up to 1 year	1 - 2 years	2 - 5 years	More than 5 years
Liabilities
Trade accounts payables	5,669,809	5,669,809	5,669,809
Loans, financing and debentures	91,042,571	129,403,665	7,379,898	21,540,133	42,972,193	57,511,441
Lease liabilities	6,851,519	12,320,600	1,633,972	1,167,781	3,068,159	6,450,688
Liabilities for asset acquisitions and subsidiaries	115,424	139,098	21,722	20,772	96,604
Derivative financial instruments	7,131,448	10,699,641	449,418	381,761	1,268,687	8,599,775
Dividends and interests on own capital payable	7,699	7,699	7,699
Other liabilities	169,366	169,366	72,488	96,878
	110,987,836	158,409,878	15,235,006	23,207,325	47,405,643	72,561,904


						12/31/2024
	Book value	Undiscounted cash flow	Up to 1 year	1 - 2 years	2 - 5 years	More than 5 years
Liabilities
Trade accounts payables	6,033,285	6,033,285	6,033,285
Loans, financing and debentures	101,435,531	142,028,543	13,599,011	14,235,170	50,858,667	63,335,695
Lease liabilities	6,972,915	12,099,294	1,302,590	1,176,832	3,094,493	6,525,379
Liabilities for asset acquisitions and subsidiaries	120,490	146,082	23,425	22,400	100,257
Derivative financial instruments	10,454,820	13,878,150	1,676,180	957,540	1,489,357	9,755,073
Dividends and interests on own capital payable	2,200,917	2,200,917	2,200,917
Other liabilities	143,330	143,330	60,892	82,438
	127,361,288	176,529,601	24,896,300	16,474,380	55,542,774	79,616,147

Financial Instruments - Exchange rate risk management


	03/31/2025	12/31/2024
Assets
Cash and cash equivalents	8,157,219	6,496,039
Marketable securities	49,870	70,255
Trade accounts receivable	4,539,485	7,090,160
Derivative financial instruments	2,894,453	3,887,100
	15,641,027	17,543,554
Liabilities
Trade accounts payable	(1,527,479)	(1,350,763)
Loans and financing	(72,660,737)	(83,004,915)
Liabilities for asset acquisitions and subsidiaries	(87,698)	(93,308)
Derivative financial instruments	(5,374,754)	(10,448,379)
	(79,650,668)	(94,897,365)
	(64,009,641)	(77,353,811)

Financial Instruments - sensitivity analysis


	03/31/2025
	Effect on profit or loss
	Probable (base value)	Possible (25%)	Remote (50%)
Cash and cash equivalents	8,157,219	2,039,305	4,078,610
Marketable securities	49,870	12,468	24,935
Trade accounts receivable	4,539,485	1,134,871	2,269,743
Trade accounts payable	(1,527,479)	(381,870)	(763,740)
Loans and financing	(72,660,737)	(18,165,184)	(36,330,369)
Liabilities for asset acquisitions and subsidiaries	(87,698)	(21,925)	(43,849)

03/31/2025

Effect on profit or loss

Probable (base value)

Possible (25%)

Remote (50%)

Embedded derivative in a commitment to purchase standing wood, originating from a forest partnership agreement

(23,225)

(31,031)

(63,614)

Financial Instruments - Sensitivity analysis foreign exchange - derivative


	03/31/2025
	Effect on profit or loss
	Probable (base value)	Possible 25%	Remote 50%
Dollar/Real
Derivative financial instruments
Derivative options	(1,518,526)	(8,199,971)	(17,829,451)
Derivative swaps	(1,449,747)	(2,500,027)	(4,807,341)
Derivative Non-Deliverable Forward (‘NDF’) Contracts	(36,977)	(255,861)	(511,664)
Embedded derivatives	(23,225)	(178,519)	(357,039)

Commodity Derivatives	29,357	7,337	14,676


	Notional value, net in U.S.$		Fair value in R$
	03/31/2025	12/31/2024	03/31/2025	12/31/2024
Instruments as part of cash flow protection strategy
Cash flow hedge
Zero Cost Collar	7,264,700	6,852,200	(1,518,526)	(4,328,970)
NDF (R$ x US$)	185,000	581,000	(36,977)	(331,876)


Debt hedges
Swap SOFR x Fixed (US$)	1,687,593	1,973,705	244,452	394,129
Swap IPCA x CDI (notional in Brazilian Reais)	8,053,063	8,128,395	(764,449)	(825,899)
Swap CNH x Fixed (US$)	165,815	165,815	(7,456)	(6,440)
Swap CDI x Fixed (US$)	903,827	909,612	(570,496)	(776,261)

Swap CDI x SOFR (US$)	610,171	610,171	(331,078)	(590,764)
Swap SOFR x SOFR (US$)	150,961	150,961	(20,720)	(37,850)

Commodity Hedge
Swap US$ e US-CPI (1)	138,182	138,439	(23,226)	(80,759)
Zero Cost Collar (Brent)	209,530	163,941	25,512	6,097
Swap VLSFO/Brent	23,027	39,706	3,846	10,873
			(2,999,118)	(6,567,720)

Current assets			888,004	1,006,427
Non-current assets			3,244,326	2,880,673
Current liabilities			(1,561,094)	(2,760,273)
Non-current liabilities			(5,570,354)	(7,694,547)
			(2,999,118)	(6,567,720)

Financial Instruments - Fair Value Maturity


	03/31/2025	12/31/2024
2025	(292,400)	(1,753,846)
2026	(505,985)	(1,699,768)
2027	247,451	(36,905)
2028 onwards	(2,448,184)	(3,077,201)
	(2,999,118)	(6,567,720)

Financial Instruments - Outstanding assets and liabilities


		Notional value		Fair value in R$
	Currency	03/31/2025	12/31/2024	03/31/2025	12/31/2024
Debt hedges
Assets
Swap CDI to Fixed	US$	4,650,715	4,748,394	1,441,090	1,482,759

Swap SOFR to Fixed	US$	1,687,593	1,973,705	250,548	424,824
Swap IPCA to CDI	R$	8,456,042	8,382,699	900,125	927,586

Swap CDI to SOFR	US$	3,117,625	3,117,625	874,462	754,173
Swap CNH to Fixed	CNH	1,200,000	1,200,000	25,935
Swap SOFR to SOFR	US$	150,961	150,961	5,366	4,949
				3,497,526	3,594,291
Liabilities
Swap CDI to Fixed	US$	903,827	909,612	(2,011,586)	(2,259,020)

Swap SOFR to Fixed	US$	1,687,593	1,973,705	(6,096)	(30,695)
Swap IPCA to CDI	R$	8,053,063	8,128,395	(1,664,574)	(1,753,485)

Swap CDI to SOFR	US$	610,171	610,171	(1,205,540)	(1,344,937)
Swap CNH to Fixed	CNH	165,815	165,815	(33,391)	(6,440)
Swap SOFR to SOFR	US$	150,961	150,961	(26,086)	(42,799)
				(4,947,273)	(5,437,376)
				(1,449,747)	(1,843,085)
Cash flow hedge
Zero Cost Collar (US$ x R$)	US$	7,264,700	6,852,200	(1,518,526)	(4,328,970)
NDF (R$ x US$)	US$	185,000	581,000	(36,977)	(331,876)

				(1,555,503)	(4,660,846)
Commodity hedge
Swap US-CPI (standing wood) (1)	US$	138,182	138,439	(23,226)	(80,759)
Zero Cost Collar (Brent)	US$	209,530	163,941	25,512	6,097
Swap VLSFO/Brent	US$	23,027	39,706	3,846	10,873
				6,132	(63,789)
				(2,999,118)	(6,567,720)

Financial Instruments - Fair Value Settled


	03/31/2025	12/31/2024
Cash flow hedge
Zero Cost Collar (R$ x US$)	1,475	645,759
NDF (R$ x US$)	(30,142)	(68,695)
NDF (€ x US$)		73,781
	(28,667)	650,845

Commodity Hedge	8,733	89,327
Swap VLSFO/other	8,733	89,327

Debt hedges
Swap CDI to Fixed (US$)	90,068	(1,635,058)
Swap IPCA to CDI (Brazilian Reais)	(43,312)	(59,243)

Swap Pre-Fixed to US$		(221,462)
Swap SOFR to SOFR (US$)	1,504	2,199
Swap CDI to SOFR (US$)	21,482	19,074
Swap SOFR to Fixed (US$)	74,750	603,737
	144,492	(1,290,753)
	124,558	(550,581)

Financial Instruments - Fair Value Hierarchy


				03/31/2025
	Level 1	Level 2	Level 3	Total
Assets
At fair value through profit or loss
Derivative financial instruments		4,132,330		4,132,330
Marketable securities	1,227,033	5,691,732		6,918,765
	1,227,033	9,824,062		11,051,095
At fair value through other comprehensive income
Other investments (note 14.1)	971,384		35,436	1,006,820
	971,384		35,436	1,006,820

Biological assets			22,861,555	22,861,555
			22,861,555	22,861,555
Total assets	2,198,417	9,824,062	22,896,991	34,919,470


Liabilities
At fair value through profit or loss
Derivative financial instruments		7,131,448		7,131,448
		7,131,448		7,131,448
		7,131,448		7,131,448


				12/31/2024
	Level 1	Level 2	Level 3	Total
Assets
At fair value through profit or loss
Derivative financial instruments		3,887,100		3,887,100
Marketable securities	1,203,776	12,159,735		13,363,511
	1,203,776	16,046,835		17,250,611

At fair value through other comprehensive income
Other investments - (note 14.1)			38,196	1,138,066
	1,099,870		38,196	1,138,066

Biological assets			22,283,001	22,283,001
			22,283,001	22,283,001
Total assets	2,303,646	16,046,835	22,321,197	40,671,678

Liabilities
At fair value through profit or loss
Derivative financial instruments		10,454,820		10,454,820
		10,454,820		10,454,820
Total liabilities		10,454,820		10,454,820

Interest rate risk [member] | Financial instruments, excluding derivatives

Disclosure of detailed information about financial instruments [line items]

Financial Instruments - sensitivity analysis


	03/31/2025
	Effect on profit or loss
	Probable	Possible (25%)	Remote (50%)
CDI/SELIC
Cash and cash equivalents	1,595,620	56,445	112,890
Marketable securities	5,618,783	198,764	397,529
Loans and financing	9,121,748	322,682	645,364
TJLP/TLP
Loans and financing	176,317	3,513	7,026
SOFR
Loans and financing	24,742,476	272,786	545,572

Interest rate risk [member] | Derivative financial instruments

Disclosure of detailed information about financial instruments [line items]

Financial Instruments - sensitivity analysis

03/31/2025

Effect on profit or loss

Probable

Probable 25%

Remote 50%

CDI

Derivative financial instruments

Liabilities

Derivative options

(1,518,526)

(710,263)

(1,419,548)

Derivative swaps

(1,449,747)

(89,057)

(174,810)

SOFR

Derivative financial instruments

Liabilities

Derivative swaps

(1,449,747)

(133,048)

(257,526)

Cash and cash equivalents (Tables)

3 Months Ended

Mar. 31, 2025

Cash and cash equivalents [abstract]

Schedule of cash and cash equivalents


	Average yield p.a. %		03/31/2025	12/31/2024
Cash and banks (1)	4.60%		8,318,885	6,596,510

Cash equivalents
Local currency
Fixed-term deposits (compromised)	101.30	% of CDI	1,595,620	2,422,308



			9,914,505	9,018,818

Marketable securities (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of financial assets [abstract]

Disclosure of financial assets held for trading [text block]


	Average yield p.a. %	03/31/2025	12/31/2024
In local currency
Private funds	98.90% of CDI	382,388	552,635
Private Securities ("CDBs")	100.80% of CDI	4,833,953	11,144,881
Public Securities (1)	IPCA + 6.15%	1,227,033	1,203,776
CDBs - Escrow Account (2)	101.76% of CDI	402,442	391,964
Other	99.30% of CDI	23,079
		6,868,895	13,293,256
Foreign currency

Other		49,870	70,255
		49,870	70,255
		6,918,765	13,363,511

Current		6,516,323	12,971,547
Non-Current		402,442	391,964

(1)Acquisition of Brazil National Treasury Notes indexed to IPCA (NTN-B).

(2)Includes escrow accounts, which will be released only after obtaining the applicable governmental approvals, and pending compliance by the Company with the conditions precedent in transactions involving the sale of rural properties.

Trade accounts receivables (Tables)

3 Months Ended

Mar. 31, 2025

Trade and other current receivables [abstract]

Disclosure of Trade Accounts Receivables by Type of Customer


	03/31/2025	12/31/2024
Domestic customers
Third parties	1,768,988	1,989,455
Related parties (Note 11.1) (1)	79,826	83,343

Foreign customers
Third parties	4,539,485	7,090,160
Related parties (Note 11.1)	180	202

(-) Expected credit losses	(34,242)	(30,300)
	6,354,237	9,132,860

(1)The balance refers to transactions with Ibema Companhia Brasileira de Papel.

Disclosure of Past Due Trade Accounts Receivables by maturity and allowance for doubtful accounts [table text block]


	03/31/2025	12/31/2024
Current	5,508,066	8,216,570
Overdue
Up to 30 days	511,482	682,142
From 31 to 60 days	129,830	134,674
From 61 to 90 days	99,636	38,187
From 91 to 120 days	41,069	17,701
From 121 to 180 days	30,151	12,402
From 181 days	34,003	31,184
	6,354,237	9,132,860

Disclosure of Changes in Allowance for Doubtful Accounts


	03/31/2025	12/31/2024
Opening balance	(30,300)	(31,962)
(Provisions)/Reversals, net	(7,653)	(2,585)

Write-offs	3,098	5,790
Exchange rate variations	613	(1,543)
Closing balance	(34,242)	(30,300)

Inventories (Tables)

3 Months Ended

Mar. 31, 2025

Subclassifications of assets, liabilities and equities [abstract]

Schedule of Inventory


	03/31/2025	12/31/2024
Finished goods
Pulp
Domestic (Brazil)	972,514	801,623
Foreign	1,882,700	1,510,985
Paper
Domestic (Brazil)	653,493	561,409
Foreign	429,903	362,027
Work in process	142,686	135,380
Raw materials
Wood	2,284,719	2,287,406
Operating supplies and packaging	1,079,651	1,098,894
Spare parts and other	1,292,327	1,302,534

(-) Expected losses	(95,111)	(97,934)
	8,642,882	7,962,324

Schedule Of Changes In Provisions For Inventory Losses


	03/31/2025	12/31/2024
Opening balance	(97,934)	(95,053)
Additions	(7,592)	(83,705)
Reversals	3,117	6,352
Write-offs	7,298	74,472
Closing balance	(95,111)	(97,934)

Recoverable taxes (Tables)

3 Months Ended

Mar. 31, 2025

Recoverable Taxes [Abstract]

Disclosure of tax receivables and payables [text block]


	03/31/2025	12/31/2024
IRPJ/CSLL – prepayments and withheld taxes	384,508	227,464
PIS/COFINS – on acquisitions of property, plant and equipment (1)	180,090	187,126
PIS/COFINS – operations	825,425	789,667
PIS/COFINS – exclusions from ICMS (2)	381,972	405,407
ICMS – on acquisitions of property, plant and equipment (3)	476,117	471,825
ICMS – operations (4)	1,678,217	1,654,162
Reintegra program (5)	78,743	70,610
Other taxes and contributions	77,666	64,444
Provision for loss on ICMS credits (6)	(1,627,727)	(1,581,961)
	2,455,011	2,288,744

Current	1,412,040	1,109,619
Non-current	1,042,971	1,179,125

(1)Social Integration Program (“PIS”) and Social Security Funding Contribution (“COFINS”): Credits whose realization is based on the years of depreciation of the corresponding asset.

(2)The Company and its subsidiaries filed lawsuits over the years seeking the exclusion of ICMS from the PIS and COFINS contribution tax basis, in relation to certain transactions during various periods from March 1992.

(3)Tax on Sales and Services (“ICMS”): Credits from the acquisition of property, plant and equipment are recovered on a straight-line basis over a four-year period, from the acquisition date, in accordance with the relevant regulation, the ICMS Control on Property, Plant and Equipment (“CIAP”).

(4)ICMS credits accrued due to the volume of exports and credit generated from product import transactions: Credits are concentrated in the States of Espírito Santo, Maranhão, Mato Grosso do Sul e São Paulo, where the Company realizes the credits through the sale of credits to third parties, after approval from the State Ministry of Finance of each State. Credits are also being realized through the consumption of consumer goods (tissue) transactions in the domestic market.

(5)Special Regime of Tax Refunds for Export Companies ("Reintegra"): Reintegra is a program that aims to refund the residual costs of taxes paid throughout the export chain to taxpayers, to make them more competitive in foreign markets.

(6)Related to provisions for ICMS credit balances that are not probable to be recovered.

Disclosure of allowance for credit losses [text block]


		ICMS
	03/31/2025	12/31/2024
Opening balance	(1,581,961)	(1,452,435)
Addition	(108,166)	(316,741)
Reversal (1)	62,400	186,014
Write-off		1,201
Closing balance	(1,627,727)	(1,581,961)

(1)Refers mainly to the reversal of the provision for loss resulting from the recovery of ICMS credits from the State of Espírito Santo through sale to third parties.

Advances to suppliers (Tables)

3 Months Ended

Mar. 31, 2025

Advances do Suppliers [Abstract]

Schedule of Advances to Suppliers


	03/31/2025	12/31/2024
Forestry development program and partnerships	2,496,154	2,503,537
Advance to suppliers - others	85,581	92,133
	2,581,735	2,595,670

Current	85,581	92,133
Non-current	2,496,154	2,503,537

In the annual financial statements for the year ended December 31, 2024, the characteristics of the advances were disclosed, which did not change during the three-month period ended March 31, 2025.

Related parties (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of transactions between related parties [abstract]

Disclosure of transactions between related parties [text block]


	Assets		Liabilities		Sales (purchases), net
	03/31/2025	12/31/2024	03/31/2025	12/31/2024	03/31/2025	03/31/2024
Transactions with majority shareholders
Suzano Holding S.A.		4	(21)	(630,387)	12	13
Controller				(336,205)
Management and related persons				(55,627)
Alden Fundo de Investimento em Ações				(52,764)
		4	(21)	(1,074,983)	12	13

Transactions with companies of the Suzano Group and other related parties
Management (expect compensation – Note 11.2)	68	61			117	143
Bexma Participações Ltda					1	1
Bizma Investimentos Ltda.						1
Naman Capital Ltda	1				1
Civelec Participações Ltda	3,860	3,860
Fundação Arymax						1
Ibema Companhia Brasileira de Papel (1)	79,826	83,343	(2,325)	(1,413)	49,430	40,934
Instituto Ecofuturo - Futuro para o Desenvolvimento Sustentável	22	21			(1,472)	(1,620)
IPLF Holding S.A.		1			2	1
Mabex Representações e Participações Ltda.			(624)	(23)	(600)	(34)
Nemonorte Imóveis e Participações Ltda			(15)		(45)	(44)
Woodspin Oy	176	203			182	173
	83,953	87,489	(2,964)	(1,436)	47,616	39,556
	83,953	87,493	(2,985)	(1,076,419)	47,628	39,569

Assets
Trade accounts receivable (Note 7)	80,006	83,545
Other assets	3,947	3,948
Liabilities
Trade accounts payable (Note 17)			(2,985)	(1,457)
Dividends and interest on own capital payable				(1,074,962)
	83,953	87,493	(2,985)	(1,076,419)

(1)Refers mainly to the sale of pulp.

Disclosure of information about key management personnel [text block]


	03/31/2025	03/31/2024
Short-term benefits
Salary or compensation	23,280	13,065
Direct and indirect benefits	328	771
Bonus	4,499	2,912
	28,107	16,748
Long-term benefits
Share-based compensation plan	49,415	14,261
	49,415	14,261
	77,522	31,009

Income taxes (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]

Disclosure of temporary difference, unused tax losses and unused tax credits [text block]


	03/31/2025	12/31/2024
Tax loss carried forward	796,552	796,831
Negative tax basis of social contribution carried forward	304,015	307,143

Assets - temporary differences
Provision for judicial liabilities	308,825	324,873
Operating provisions	330,443	515,779
Provisions for other losses	563,416	547,242
Employee benefit plans	248,211	245,331
Exchange rate variations	5,381,844	7,385,034
Derivatives losses (“MtM”)(1)	1,017,165	2,230,835
Amortization of fair value adjustments arising from business combinations	624,513	625,745
Unrealized profit on inventories	423,772	539,157
Leases (1)	542,608	606,944
	10,541,364	14,124,914

Liabilities - temporary differences
Goodwill - tax benefit on unamortized goodwill	1,661,945	1,589,887
Property, plant and equipment - deemed cost	1,050,988	1,066,883
Depreciation for tax-incentive reason (2)	717,303	733,640
Capitalized loan costs	938,284	947,482
Fair value of biological assets	1,237,672	1,317,095
Deferred taxes, net of fair value adjustments	335,034	342,141
Tax credits - gains from tax lawsuit (exclusion of ICMS from the PIS and COFINS basis)	129,893	137,928

Provision of deferred taxes on results of subsidiaries abroad	33,476
Other temporary differences	4,823	18,439
	6,109,418	6,153,495

Non-current assets	4,431,946	7,984,015
Non-current liabilities		12,596

(1)The Company presents a net balance of derivatives and leases, as gains and losses from deferred taxes are offset simultaneously. For the derivatives line, the passive temporary difference was R$1,396,134 and asset temporary difference of R$2,413,299 (passive temporary difference was R$1,321,614 and asset temporary difference of R$3,552,449 as of December 31, 2024). For the lease line, the passive temporary difference was R$1,741,146 and asset temporary difference was R$2,283,754 (passive temporary difference was R$1,763,847 and asset temporary difference was R$2,370,791 as of December 31, 2024).

(2)Tax depreciation is taken as a benefit only in the income tax calculation bases.

Summary of Tax Credit Carryforwards


	03/31/2025	12/31/2024
Tax loss carried forward	3,186,208	3,187,324
Negative tax basis of social contribution carried forward	3,377,944	3,412,700

Disclosure of deferred taxes [text block]


	03/31/2025	12/31/2024
Opening balance	7,971,419	533,836
Tax loss carried forward	(279)	(413,137)
Negative tax basis of social contribution carried forward	(3,128)	(149,887)
Provision for judicial liabilities	(16,048)	715
Operating provisions and other losses	(166,282)	93,545
Exchange rate variation	(2,003,190)	5,000,881
Derivative (gains) losses (“MtM”)	(1,213,670)	2,908,925
Amortization of fair value adjustments arising from business combinations	5,875	193
Unrealized profit on inventories	(115,385)	387,579
Leases	(64,336)	250,834
Goodwill - tax benefit on unamortized goodwill	(72,058)	(288,233)
Property, plant and equipment - deemed cost	15,895	70,600
Depreciation accelerated for tax-incentive reason	16,337	66,217
Capitalized loan costs	9,198	(307,419)
Fair value of biological assets	79,423	(201,663)
Deferred taxes on the results of subsidiaries abroad	(33,476)
Credits on exclusion of ICMS from the PIS/COFINS tax base	8,035	12,763
Other temporary differences	13,616	5,670
Closing balance	4,431,946	7,971,419

Disclosure of Reconciliation of Effects of Income Tax and Social Contribution on Profit or Loss


	03/31/2025	03/31/2024
Net income (loss) before taxes	9,955,248	(487,822)
Income tax and social contribution benefit (expense) at statutory nominal rate of 34%	(3,384,784)	165,859

Tax effect on permanent differences
Impact of the taxation difference on profit of associates in Brazil and abroad (1)	(283,517)	510,772
Equity method	(5,806)	(3,368)


Credit related to Reintegra Program	2,912	2,038
Director bonuses	(11,912)	(3,842)
Tax incentives (Note 12.3)	67,802	11,315
Donations/Fines – Other	8,235	25,080
	(3,607,070)	707,854
Income tax
Current	(57,542)	(90,923)
Deferred	(2,592,733)	605,999
	(2,650,275)	515,076
Social Contribution
Current	(9,558)	(23,431)
Deferred	(947,237)	216,209
	(956,795)	192,778
Income and social contribution benefits (expenses) on the period	(3,607,070)	707,854

(1)The difference in the taxation of subsidiaries is substantially due to the differences between the nominal tax rates in Brazil and those of subsidiaries located abroad.

Disclosure of Tax Incentives

12.3 Tax incentives

The Company benefits from a tax incentive for partial reduction of the income tax obtained from operations carried out in areas under the jurisdiction of the Northeast Development Superintendence (“SUDENE”) and the Superintendence of Amazon Development (“SUDAM”). The IRPJ reduction incentive is calculated based on the activity profits (exploitation profits) and considers the allocation of the operating profit based on the incentive production levels for each product.

Area/Regions

Company

Maturity

Northeast Development Superintendence (“SUDENE”)

Aracruz (ES)

Portocel

2030

Aracruz (ES)

Suzano

2031

Imperatriz (MA)

Suzano

2032

Mucuri (BA)

Suzano

2032

São Luís (MA)

Itacel

2033

Eunápolis (BA)

Veracel

2033

Superintendence of Amazon Development (“SUDAM”)

Belém (PA)

Suzano

2025

Biological assets (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of detailed information about biological assets [abstract]

Disclosure of reconciliation of changes in biological assets [text block]


	03/31/2025	12/31/2024
Opening balance	22,283,001	18,278,582
Additions	1,836,180	7,180,450
Additions of merged companies		366,785
Depletions	(1,234,226)	(4,831,916)
Transfers	15,233	102,790
Gain on fair value adjustments		1,431,530
Disposals	(6,356)	(130,922)
Write-offs	(32,277)	(114,298)
Closing balance	22,861,555	22,283,001

Investments (Tables)

3 Months Ended

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.

Property, plant and equipment (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of detailed information about property, plant and equipment [abstract]

Disclosure of detailed information about property, plant and equipment [text block]


	Land	Buildings	Machinery, equipment and facilities	Work in progress	Other (1)	Total
Average rate %		3.17	7.29		19.89
Accumulated cost	14,859,189	10,032,317	48,456,537	17,485,109	1,491,663	92,324,815
Accumulated depreciation		(4,125,823)	(27,918,585)		(991,338)	(33,035,746)
Balances at December 31, 2023	14,859,189	5,906,494	20,537,952	17,485,109	500,325	59,289,069
Additions	697	558	415,147	7,490,762	28,904	7,936,068
Acquisition of subsidiaries	1,699,588	775	413		1,992	1,702,768
Write-offs	(10,724)	(7,455)	(118,499)		(9,324)	(146,002)
Depreciation		(366,398)	(3,214,550)		(222,993)	(3,803,941)
Transfers and other	226,598	3,988,619	16,660,035	(21,465,336)	598,162	8,078
Accumulated cost	16,775,348	13,816,631	62,822,096	3,510,535	1,806,592	98,731,202
Accumulated depreciation		(4,294,038)	(28,541,598)		(909,526)	(33,745,162)
Balances at December 31, 2024	16,775,348	9,522,593	34,280,498	3,510,535	897,066	64,986,040
Additions	3,211	7	100,643	1,121,983	6,056	1,231,900
Write-offs		(799)	(12,247)		(2,502)	(15,548)
Depreciation		(104,786)	(1,020,232)		(72,330)	(1,197,348)
Transfers and other	1,351	434,293	674,587	(1,171,314)	61,695	612
Accumulated cost	16,779,910	14,249,711	63,547,914	3,461,204	1,860,354	99,899,093
Accumulated depreciation		(4,398,403)	(29,524,665)		(970,369)	(34,893,437)
Balances at March 31, 2025	16,779,910	9,851,308	34,023,249	3,461,204	889,985	65,005,656

(1)Includes vehicles, furniture and utensils and computer equipment.

Disclosure of Property, Plant and Equipment Pledged as Collateral [Table]


	Type of collateral	3/31/2025	12/31/2024
Land	Financial/Legal	24,427	24,427
Buildings	Financial	1,757,860	1,755,082
Machinery, equipment and facilities	Financial	20,158,141	20,442,189
Work in progress	Financial	413,767	427,998
Other	Financial	39,826	43,487
		22,394,021	22,693,183

Intangible (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of detailed information about intangible assets [abstract]

Schedule of goodwill and intangible assets with indefinite useful life


	03/31/2025	12/31/2024
Goodwill - Facepa	119,332	119,332
Goodwill - Fibria	7,897,051	7,897,051
Goodwill - MMC Brasil	170,859	170,859
Other (1)	5,097	5,097
	8,192,339	8,192,339

Schedule of intangible assets with determined useful life


		03/31/2025	12/31/2024
Opening balance		5,709,964	6,557,009
Additions		11,836	161,779


Amortization		(250,523)	(1,008,824)

Closing balance		5,471,277	5,709,964
Represented by	Average rate %
Non-competition agreements	5.00	4,430	4,508
Port concessions	3.94	644,282	632,253

Supplier agreements	12.66	22,221	25,925
Port service contracts	4.23	513,119	520,459
Cultivars	14.28	15,293	20,391
Trademarks and patents	8.35	166,419	170,306
Customer portfolio	9.09	3,899,654	4,104,900
Supplier agreements	17.64	232	295
Software	20.80	193,822	201,476
Other	10.00	11,805	29,451
		5,471,277	5,709,964

Cost		12,552,386	12,540,497
Amortization		(7,081,109)	(6,830,533)
Closing balance		5,471,277	5,709,964

Trade accounts payable (Tables)

3 Months Ended

Mar. 31, 2025

Subclassifications of assets, liabilities and equities [abstract]

Disclosure of trade and other payables [text block]


	03/31/2025	12/31/2024
In local currency
Third party (1)	4,139,345	4,681,065
Related party (Note 11.1) (2)	2,985	1,457
In foreign currency
Third party	1,527,479	1,350,763
	5,669,809	6,033,285

(1)Within the balance of suppliers, there are values under supplier finance arrangement that were subject to anticipation with financial institutions at the exclusive option of certain suppliers, without changing the originally defined purchase conditions (payment terms and negotiated prices). The balance related to such operations on March 31, 2025 was R$429,166 (R$555,063 at December 31, 2024).

(2)The balance refers mainly to transactions with Ibema Companhia Brasileira de Papel.

Loans, financing and debentures (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of detailed information about borrowings [abstract]

Disclosure of detailed information about borrowings [text block]


					Current		Non-current			Total
Type	Currency	Interest rate	Average annual interest rate - %		03/31/2025	12/31/2024	03/31/2025	12/31/2024	03/31/2025	12/31/2024
In foreign currency

Bonds	USD	Fixed	5.0	%	368,085	3,229,641	45,691,405	49,166,804	46,059,490	52,396,445
Panda Bonds	CNY	Fixed	2.8	%	9,581		948,655		958,236
Export credits (“export prepayments”)	USD	SOFR/Fixed	5.4	%	2,153,304	6,236,806	16,983,690	16,283,736	19,136,994	22,520,542
Assets financing	USD	SOFR	3.3	%	6,479	137,300	713,766	298,252	720,245	435,552
ECA - Export Credit Agency	USD	SOFR	5.8	%	108,292	7,297	269,563	769,702	377,855	776,999
IFC - International Finance Corporation (1)	USD	SOFR	5.6	%	(3,046)	(12,051)	5,398,827	5,858,208	5,395,781	5,846,157
Others					7,910	4,210	4,226	4,455	12,136	8,665
					2,650,605	9,607,427	70,010,132	73,397,488	72,660,737	83,004,915
In local currency
BNDES	BRL	UMBNDES	6.8	%	417		157,555		157,972
BNDES	BRL	TJLP	8.7	%	98,893	100,556	76,811	101,587	175,704	202,143
BNDES	BRL	TLP	14.5	%	99,780	94,903	4,665,467	4,607,102	4,765,247	4,702,005

BNDES	BRL	SELIC	17.4	%	251,304	243,223	663,562	704,825	914,866	948,048

BNDES	BRL	TR	2.2	%	1,110		68,998		70,108
Assets financing	BRL	CDI	17.0	%	18,514	18,427	52,307	56,956	70,821	75,383
NCE (“Export credit notes”)	BRL	CDI	17.6	%	3,486	3,027	100,000	100,000	103,486	103,027
NCR (“Rural producer certificates”)	BRL	CDI	14.8	%	39,854	312,652	2,000,000	2,000,000	2,039,854	2,312,652

Debentures	BRL	CDI/IPCA	15.2	%	264,647	120,931	9,819,129	9,738,616	10,083,776	9,859,547
					778,005	893,960	17,603,829	17,536,656	18,381,834	18,430,616
					3,428,610	10,501,387	87,613,961	90,934,144	91,042,571	101,435,531

Interest on financing					911,672	1,541,312			911,672	1,541,312
Non-current funding					2,516,938	8,960,075	87,613,961	90,934,144	90,130,899	99,894,219
					3,428,610	10,501,387	87,613,961	90,934,144	91,042,571	101,435,531

(1) The balances shown as negative correspond to fundraising costs

Disclosure of maturity analysis for non-derivative financial liabilities [text block]


	2026	2027	2028	2029	2030	2031 onwards	Total
In foreign currency
Bonds	2,968,093	4,011,716	2,852,225	10,018,435	5,660,739	20,180,197	45,691,405
Panda Bonds (1)		948,655					948,655
Export credits (“export prepayments”)	1,224,473	3,594,061	3,583,133	4,807,933	3,062,507	711,583	16,983,690
Assets financing	83,169	111,553	68,475	6,366			269,563
ECA - Export Credit Agency (1)						713,766	713,766
IFC - International Finance Corporation (1)		290,300	1,477,021	2,400,463	1,231,043		5,398,827

	4,275,735	8,956,285	7,980,854	17,233,197	9,954,289	21,605,546	70,005,906
In local currency
BNDES – TJLP	65,250	3,651	3,651	3,651	608		76,811
BNDES – TLP	80,906	161,927	159,092	144,920	372,599	3,746,023	4,665,467

BNDES – SELIC	198,744	35,645	35,645	35,645	35,645	322,238	663,562

BNDES – TR	3,161	4,734	4,734	4,734	4,734	46,901	68,998
BNDES - UMBNDES	4,258	8,516	8,516	8,516	8,516	119,233	157,555
Assets financing	14,092	19,114	19,034	67			52,307
NCE (“Export credit notes”)		25,000	25,000	25,000	25,000		100,000
NCR (“Rural producer certificates”)					2,000,000		2,000,000

Debentures (1)			749,193		540,490	8,529,446	9,819,129
	366,411	258,587	1,004,865	222,533	2,987,592	12,763,841	17,603,829
	4,642,146	9,214,872	8,985,719	17,455,730	12,941,881	34,369,387	87,609,735

(1) The balances shown as negative correspond to fundraising costs, which are amortized on a straight-line basis.

Schedule of Changes In Loans, Financing and Debentures


	03/31/2025	12/31/2024
Opening balance	101,435,531	77,172,692
Fundraising, net of issuance costs	7,055,244	15,692,905
Interest accrued	1,412,878	5,413,707
Monetary and exchange rate variation, net	(5,702,984)	17,728,324
Settlement of principal	(11,175,521)	(9,410,807)
Settlement of interest	(2,014,500)	(5,241,389)
Amortization of fundraising costs	31,923	80,099

Closing balance	91,042,571	101,435,531

Disclosure of Transaction Costs and Premiums of Securities Issues Explanatory


			Balance to be amortized
Type	Cost	Amortization	03/31/2025	12/31/2024
Bonds	434,970	286,460	148,510	168,450


Export credits (“export prepayments”)	273,989	181,400	92,589	63,080
Debentures	159,675	35,813	123,862	125,663
BNDES	81,730	56,686	25,044	25,777

IFC - International Finance Corporation	81,956	12,533	69,423	78,719
Others	20,912	14,884	6,028	6,799
	1,053,232	587,776	465,456	468,488

Leases (Tables)

3 Months Ended

Mar. 31, 2025

Presentation of leases for lessee [abstract]

Disclosure of quantitative information about right-of-use assets [text block]


	Lands	Machinery and equipment	Buildings	Ships and boats	Vehicles	Total
Balances at December 31, 2023	3,380,298	184,813	127,432	1,498,228	5,860	5,196,631
Additions/updates	506,373	157,542	41,235		39,076	744,226
Depreciation (1)	(408,000)	(167,312)	(54,275)	(124,890)	(2,587)	(757,064)
Write-offs (2)	(3,102)					(3,102)
Balances at December 31, 2024	3,475,569	175,043	114,392	1,373,338	42,349	5,180,691
Additions/updates	229,525	11,502	25,690			266,717
Depreciation (1)	(108,410)	(40,571)	(13,238)	(31,223)	(4,365)	(197,807)

Balances at March 31, 2025	3,596,684	145,974	126,844	1,342,115	37,984	5,249,601

(1)The amount of depreciation related to land is substantially reclassified to biological assets to make up the formation costs.

(2)Write-off due to cancellation of contracts.

Lessee, Operating Leases, Present Value Of Lease Liabilities [Table Text Block ]


Nature of agreement	Average rate - % p.a. (1)	Maturity (2)	Present value of liabilities
Lands and farms	12.27	May/2052	4,041,182
Machinery and equipment	11.19	July/2032	244,318
Buildings	10.75	March/2031	125,318
Ships and boats	11.25	February/2039	2,408,213
Vehicles	11.10	November/2028	32,488
			6,851,519

(1)To determine the discount rates, quotes were obtained from financial institutions for agreements with characteristics and average terms similar to the lease agreements.

(2)Refers to the original maturities of the agreements and, therefore, does not consider eventual renewal clauses.

Lessee, Operating Leases, Changes in Lease Liabilities


	03/31/2025	12/31/2024
Opening balance	6,972,915	6,243,782
Additions	266,717	744,226
Write-offs (2)		(3,102)
Payments	(371,531)	(1,325,398)
Accrual of financial charges (1)	182,458	700,283
Exchange rate variations	(199,040)	613,124
Closing balance	6,851,519	6,972,915

Current	870,322	872,228
Non-current	5,981,197	6,100,687

(1)On March 31, 2025, the amount of R$66,200 related to interest expenses on leased lands was capitalized to biological assets to represent the formation cost (R$223,055 as of December 31, 2024).

(2)Write-off due to cancellation of contracts.

Lessee, Operating Leases, Expenses Recognised in Profit or Loss [Table Text Block ]

The amounts recognized are set out below:


	03/31/2025	03/31/2024
Expenses relating to short-term assets	672	1,084
Expenses relating to low-value assets	18	424
	690	1,508

Provision for judicial liabilities (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of other provisions [abstract]

Disclosure of provisions [text block]


					03/31/2025
	Tax and social security	Labor	Civil, environment and real estate	Contingent liabilities assumed (1) (2)	Total
Provision balance at the beginning of the period	407,964	353,926	215,553	2,127,725	3,105,168
Payments	(58,974)	(27,512)	(1,422)		(87,908)
Reversal	(10,885)	(4,884)		(1,703)	(17,472)
Additions	2,038	33,134	9,582		44,754
Monetary adjustment	4,519	6,362	9,446		20,327
Provision balance	344,662	361,026	233,159	2,126,022	3,064,869
Judicial deposits	(4,234)	(95,578)	(21,621)		(121,433)
Provision balance at the end of the period	340,428	265,448	211,538	2,126,022	2,943,436

(1)Amounts arising from tax-related lawsuits with a possible or remote probability of loss in the amount of R$1,992,741 and civil lawsuits in the amount of R$133,281, measured and recorded at the estimated fair value resulting from the business combination with Fibria.

(2)Reversal due to a change in likelihood, cancellation and/or due to settlement.


					12/31/2024
	Tax and social security	Labor	Civil, environment and real estate	Contingent liabilities assumed (1) (2)	Total
Provision balance at the beginning of the year	468,839	349,058	139,435	2,155,545	3,112,877
Payments	(60,081)	(89,221)	(6,795)		(156,097)
Reversal	(9,540)	(89,941)	(1,951)	(27,820)	(129,252)
Additions	4,689	162,456	72,605		239,750
Monetary adjustment	4,057	21,574	12,259		37,890
Provision balance	407,964	353,926	215,553	2,127,725	3,105,168
Judicial deposits	(66,746)	(91,596)	(20,076)		(178,418)
Provision balance at the end of the year	341,218	262,330	195,477	2,127,725	2,926,750

(1)Amounts arising from tax-related lawsuits with a possible or remote probability of loss in the amount of R$2,448,564 and civil lawsuits in the amount of R$197,141, measured and recorded at the estimated fair value resulting from the business combination with Fibria.

(2)Reversal due to a change in likelihood, cancellation and/or due to settlement.

Disclosure of Provisions for Possible Losses Explanatory


	03/31/2025	12/31/2024
Taxes and social security (1)	9,942,885	9,837,082
Labor	177,780	171,480
Civil and environmental (1) (2)	1,016,611	5,065,714
	11,137,276	15,074,276

(1)The amounts above do not include the fair value adjustments allocated to possible loss risk contingencies representing R$2,106,933 (R$2,135,869 as of December 31, 2024), which were recorded at fair value resulting from business combinations with Fibria, as presented in Note 20.1.1 above.

(2)As disclosed in the annual financial statements, note 20.2.3(i), the Company is a defendant in a Public Civil Action (“ACP”) regarding compensation for damages caused to federal highways due to the transportation of timber exceeding the permitted weight. Based on a recent decision by the Superior Court of Justice (“STJ”), which established the thesis of civil liability without clear and objective liquidation criteria, as well as the change of the monetary correction index from IGPM/FGV to SELIC, the Company reassessed the exposure amount of this action to approximately R$ 340 million. This estimate made by management and supported by its external legal advisors, is based on scenarios with similarity to infraction notices suffered by other companies and assessed according to the quantification criteria applied by the Federal Public Ministry (“MPF”). Given the absence of clear and objective criteria for measuring such claims from the MPF in similar cases, management’s current estimate may vary to a higher or lower amount, subject to the final decision by the MPF/TRF1 regarding the Company's case.

Employee benefits plans (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of information about defined benefit plans [abstract]

Disclosure of net defined benefit liability (asset) [text block]


	03/31/2025	12/31/2024
Opening balance	721,560	833,683
Interest on actuarial liabilities	19,337	73,853
Current service cost	485	1,997
Actuarial loss – experience		(125)
Actuarial loss (gain) – financial assumptions		(137,649)
Benefits paid directly by entity	(11,350)	(50,199)
Closing balance	730,032	721,560

Share-based compensation plan (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of terms and conditions of share-based payment arrangement [abstract]

Disclosure of number and weighted average exercise prices of other equity instruments [text block]


		Number of shares
Year of grant	Fair value on grant date	31/12/2024	Granted during of the year	Cancelled	Exercised (1)	31/03/2025	Available for completion	Restricted year for transfer of shares
								2025	2026	2027	2028
2020	R$38.50	33,384	1,083			34,467	34,467
2021	R$62.25	874,480	28,375	(13,046)	(358,000)	531,809	404,570	127,239
2022	R$57.48	3,461,437	112,251	(98,593)	(979,322)	2,495,773		2,148,353	323,447	23,973
2023	R$48.84	3,052,179	98,965	(95,361)	(63,225)	2,992,558		29,253	2,670,308	292,997
2024	R$56.53	2,675,017	86,665	(46,819)	(37,191)	2,677,672			2,987	2,476,946	197,739
2025	R$60.53		1,683,347	(4,095)	(17,401)	1,661,851					1,661,851
		10,096,497	2,010,686	(257,914)	(1,455,139)	10,394,130	439,037	2,304,845	2,996,742	2,793,916	1,859,590

Book value		361,974	83,198		(83,277)	361,895
Book value of the previous year		268,489	173,486		(80,001)	361,974

(1)The average price of the share options exercised and exercised due to termination of employment on March 31, 2025 was R$60.25 (R$42.36 as at December 31, 2024).

Disclosure of number and weighted average exercise prices of share options [text block]


		Number of stock options
Year of grant	Fair value on grant date	31/12/2024	Shares granted/provisioned	Exercised	31/03/2025	Restricted year for transfer of shares
						2025	2026	2027	2028	2029	2030
2022	R$53.81	115,800	3,758	(119,558)
2023	R$51.41	383,568	12,448		396,016		277,249	118,767
2024	R$55.77	2,480,743	80,509		2,561,252	348,417	227,697	312,564		1,672,574
2025	R$61.39		267,096		267,096				150,604		116,492
Number of stock options		2,980,111	363,811	(119,558)	3,224,364	348,417	504,946	431,331	150,604	1,672,574	116,492

Book value		60,226	11,038	(6,437)	64,827
Book value of the previous year		26,744	81,276	(47,794)	60,226

Liabilities for assets acquisitions and subsidiaries (Tables)

3 Months Ended

Mar. 31, 2025

Notes and other explanatory information [abstract]

Disclosure of Liabilities for Assets Acquisitions


	03/31/2025	12/31/2024



Business combinations
Facepa (1)	27,725	27,182
Vale Florestar Fundo de Investimento em Participações ("VFFIP") (2)	87,699	93,308

	115,424	120,490

Current	20,877	21,166
Non-current	94,547	99,324

(1)Acquired in March 2018, for the amount of R$307,876, upon the payment of R$267,876, with the remainder updated at the IPCA, adjusted for possible losses incurred up to the payment date, with maturity in March 2028.

(2)On August 2014, the Company acquired Vale Florestar S.A. through VFFIP, with maturity up to August 2029. The annual settlements, carried out in the month of August, are subject to interest and updated by the variations of the US$ exchange rate, and partially updated by the IPCA.

Shareholders equity (Tables)

3 Months Ended

Mar. 31, 2025

Disclosure of classes of share capital [abstract]

Disclosure of classes of share capital [text block]


	03/31/2025		12/31/2024
	Quantity	(%)	Quantity	(%)
Controlling Shareholders
Suzano Holding S.A.	367,612,329	29.08	367,612,329	29.08
Controller	196,065,636	15.51	196,065,636	15.51
Managements and related persons	31,903,998	2.52	32,784,440	2.59
Alden Fundo de Investimento em Ações	27,154,744	2.15	26,154,744	2.07
	622,736,707	49.26	622,617,149	49.25
Treasury (Note 24.2)	25,455,929	2.01	24,875,787	1.97
Other shareholders	615,924,979	48.73	616,624,679	48.78
	1,264,117,615	100.00	1,264,117,615	100.00

Schedule of treasury shares


	Quantity	Average cost per share	Historical value	Market value
Balances at December 31, 2023	34,765,600	42.69	1,484,014	1,934,010
Exercised (note 22.2)	(1,005,113)	47.55	(47,794)	(54,213)
Repurchase	51,115,300	54.91	2,806,764	2,806,764
Canceled	(60,000,000)	48.40	(2,903,787)	(3,238,200)
Balances at December 31, 2024	24,875,787	53.84	1,339,197	1,536,826
Exercised (note 22.2)	(119,558)	53.84	(6,437)	(6,577)
Repurchase	699,700	55.26	38,664	38,664

Balances at March 31, 2025	25,455,929	53.87	1,371,424	1,347,637

Earnings per share (Tables)

3 Months Ended

Mar. 31, 2025

Earnings per share [abstract]

Schedule of Basic Earnings (Losses) Per Share

The basic earnings per share is measured by dividing the profit attributable to the Company’s shareholders by the weighted average number of common shares issued during the period, excluding the common shares acquired by the Company and held as treasury shares.


	03/31/2025	03/31/2024
Net income for the period attributed to Controlling shareholders'	6,340,760	215,392
Weighted average number of shares in the period – in thousands	1,264,118	1,309,612
Weighted average treasury shares – in thousands	(25,047)	(24,110)
Weighted average number of outstanding shares – in thousands	1,239,071	1,285,502
Basic earnings per common share – R$	5.11735	0.16755

Schedule of Diluted Earnings (Losses) Per Share

The diluted earnings per share is measured by adjusting the weighted average of outstanding common shares, assuming the conversion of all common shares with dilutive effects.


	03/31/2025	03/31/2024
Net income for the period attributed to Controlling shareholders'	6,340,760	215,392
Weighted average number of shares during the period (except treasury shares) – in thousands	1,239,071	1,285,502
Average number of potential shares (stock options) - in thousands	3,171	664
Weighted average number of shares (diluted) – in thousands	1,242,242	1,286,166
Diluted earnings per common share – R$	5.10429	0.16747

Net financial results (Tables)

3 Months Ended

Mar. 31, 2025

Notes and other explanatory information [abstract]

Disclosure of finance income (cost) [text block]


	03/31/2025	03/31/2024
Financial expenses
Interest on loans, financing and debentures (1)	(1,360,125)	(853,289)
Amortization of transaction costs	(31,923)	(17,308)
Interest expenses on lease liabilities (2)	(116,258)	(109,806)

Other	(131,779)	(149,997)
	(1,640,085)	(1,130,400)

Financial income
Cash and cash equivalents and marketable securities	348,428	409,192
Other	90,425	15,025
	438,853	424,217
Results from derivative financial instruments
Income	4,224,351	716,512
Expenses	(531,192)	(1,351,049)
	3,693,159	(634,537)
Monetary and exchange rate variations, net
Exchange rate variations on loans, financing and debentures	5,702,984	(2,071,835)
Leases	199,040	(71,671)
Other assets and liabilities (3)	(697,738)	444,178
	5,204,286	(1,699,328)
Net financial result	7,696,213	(3,040,048)

(1)Excludes R$52,753 arising from capitalized loan costs, substantially related to property, plant and equipment in progress of the Cerrado Project for the three-month period ended March 31, 2025 (R$377,560 as at March 31, 2024).

(2)Includes R$66,200 referring to the reclassification to the biological assets item for the composition of the formation cost (R$223,055 as of March 31, 2024).

(3)Includes effects of exchange rate variations of trade accounts receivable, trade accounts payable, cash and cash equivalents, marketable securities and others.

Net sales (Tables)

3 Months Ended

Mar. 31, 2025

Notes and other explanatory information [abstract]

Disclosure of Reconciliation From Gross Revenue from Contracts with Customers, to Net Revenue from Contracts with Customers


	03/31/2025	03/31/2024
Gross sales	13,931,964	11,434,047
Sales deductions
Returns and cancellations	(36,433)	(54,357)
Discounts and rebates	(1,812,315)	(1,394,942)
	12,083,216	9,984,748
Taxes on sales	(530,295)	(526,146)
Net sales	11,552,921	9,458,602

Segment information (Tables)

3 Months Ended

Mar. 31, 2025

Notes and other explanatory information [abstract]

Disclosure of operating segments [text block]


	03/31/2025
	Pulp	Paper	Total
Net sales	8,611,543	2,941,378	11,552,921
Domestic market (Brazil)	457,416	1,691,196	2,148,612
Foreign market	8,154,127	1,250,182	9,404,309
Cost of sales	(5,696,157)	(2,033,010)	(7,729,167)

Adjusted EBITDA	4,254,146	611,628	4,865,774
Adjustments to EBITDA (*)			(109,317)
Depreciation, depletion and amortization			(2,497,422)
Financial result			7,696,213
Net income before taxes			9,955,248


	03/31/2024
	Pulp	Paper	Total
Net sales	7,359,846	2,098,756	9,458,602
Domestic market (Brazil)	486,168	1,572,490	2,058,658
Foreign market	6,873,678	526,266	7,399,944
Cost of sales	(4,374,903)	(1,324,967)	(5,699,870)

Adjusted EBITDA	3,902,250	655,656	4,557,906
Adjustments to EBITDA (*)			(23,656)
Depreciation, depletion and amortization			(1,982,024)
Financial result			(3,040,048)
Net before taxes			(487,822)


	03/31/2025	03/31/2024
(*) Adjustments to EBITDA
Fair Value Update - Biological Asset		—
Income from disposal and write-off of property, plant and equipment and biological assets	(46,306)	(36,312)
Provision/(reversals) for losses on ICMS credits	(45,765)	23,763
Others (1)	(17,246)	(11,107)
	(109,317)	(23,656)

(1) It includes items with specific, non-cash and exceptional adjustments, such as: i) equity equivalence, ii) extinction of the packaging business line, iii) effective loss of the development contract advance program, iv) accruals for losses on ICMS credits, and v) income from disposal and write-off of property, plant and equipment and biological assets.

Disclosure of products and services [text block]


	03/31/2025	03/31/2024
Products
Market pulp (1)	8,611,543	7,359,846
Printing and writing paper (2)	1,879,301	1,780,944
Paperboard	1,051,768	298,190
Other	10,309	19,622
	11,552,921	9,458,602

(1)Net sales of fluff pulp represent 0.6% of total net sales, and therefore were included in market pulp net sales. (0.7% as at March 31, 2024).

(2)Net sales of tissue represent 6.0% of total net sales, and therefore were included in printing and writing paper net sales. (6.7% as at March 31, 2024).

Disclosure of Allocation of Goodwill Based on Expected Future Profitability to Segments


	03/31/2025	12/31/2024
Pulp	7,897,051	7,897,051
Paper	290,191	290,191
	8,187,242	8,187,242

Income (expenses) by nature (Tables)

3 Months Ended

Mar. 31, 2025

Analysis of income and expense [abstract]

Disclosure of expenses [text block]


	03/31/2025	03/31/2024
Cost of sales
Personnel expenses	(520,711)	(364,650)
Costs of raw materials, materials and services	(3,153,449)	(2,479,702)
Logistics cost	(1,296,365)	(1,063,930)
Depreciation, depletion and amortization	(2,223,588)	(1,706,401)
Other (1)	(535,054)	(85,187)
	(7,729,167)	(5,699,870)
Selling expenses
Personnel expenses	(90,189)	(72,670)
Services	(55,666)	(47,850)
Logistics cost	(340,905)	(272,620)
Depreciation and amortization	(241,026)	(238,962)
Other (2)	(27,096)	(21,313)
	(754,882)	(653,415)
General and administrative expenses
Personnel expenses	(403,006)	(320,672)
Services	(115,819)	(92,452)
Depreciation and amortization	(30,276)	(34,313)
Other (3)	(124,450)	(55,538)
	(673,551)	(502,975)
Other operating (expenses) income, net
Rents and leases	520	189
Results from sales of other products, net	26,967	24,486
Results from sales and disposals of property, plant and equipment, intangible and biological assets, net	(46,307)	(47,554)

Depletion, amortization and other PPA realizations (4)	(2,532)	(2,348)
Provision for judicial liabilities	(104,863)	(26,109)
Other operating income (expenses), net	7,006	11,127
	(119,209)	(40,209)

General information about financial statements (Details) - item	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2025
State of Sao Paulo \| Suzano Industrial
Company's Operations [Line Items]
Number of Industrial Units			2
Number of Industrial Units			16
Number of Technology Centers	7,000
%	100.00%	100.00%
Controlling Shareholders
Company's Operations [Line Items]
%	49.26%	49.25%

Company's Operations - Summary (Details) - item	Dec. 31, 2025	Mar. 31, 2025
Company's Operations [Line Items]
Number of Industrial Units	16
Number of Technology Centers		7,000
BRAZIL
Company's Operations [Line Items]
Number of Technology Centers		4,000
Number of Distribution Centers		28
BRAZIL \| Fibria
Company's Operations [Line Items]
Number of Ports		4
CANADA
Company's Operations [Line Items]
Number of Technology Centers		1,000
CHINA
Company's Operations [Line Items]
Number of Technology Centers		1,000
ISRAEL
Company's Operations [Line Items]
Number of Technology Centers		1,000
Suzano Industrial \| BRAZIL
Company's Operations [Line Items]
Number of Industrial Units	14
Suzano Industrial \| State of Sao Paulo
Company's Operations [Line Items]
Number of Industrial Units	2
Suzano Packaging LLC (Indirect) \| UNITED STATES
Company's Operations [Line Items]
Number of Industrial Units	2
Suzano Packaging LLC (Indirect) \| Pine Bluff
Company's Operations [Line Items]
Number of Industrial Units	2
Suzano Packaging LLC (Indirect) \| Waynesville [Member]
Company's Operations [Line Items]
Number of Industrial Units	2

Company's Operations - Equity interests (Details) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Company's Operations [Line Items]
%	100.00%	100.00%
Stock canceled During Period, Shares		(60,000,000,000)
F&E Tecnologia do Brasil S.A. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Biofuel production, except alcohol
Country	Brazil
%	100.00%	100.00%
Fibria Celulose (USA) Inc. (Direct) \| UNITED STATES
Company's Operations [Line Items]
Main activity	Business office
Country	United States of America
%	100.00%	100.00%
Fibria Terminal de Celulose de Santos SPE S.A. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Port operations
Country	Brazil
%	100.00%	100.00%
FuturaGene Ltd. \| England
Company's Operations [Line Items]
Main activity	Biotechnology research and development
Country	England
%	100.00%	100.00%
FuturaGene Delaware Inc. (Indirect) \| UNITED STATES
Company's Operations [Line Items]
Main activity	Biotechnology research and development
Country	United States of America
%	100.00%	100.00%
FuturaGene Israel Ltd. (Indirect) \| ISRAEL
Company's Operations [Line Items]
Main activity	Biotechnology research and development
Country	Israel
%	100.00%	100.00%
FuturaGene Inc. (Indirect) \| UNITED STATES
Company's Operations [Line Items]
Main activity	Biotechnology research and development
Country	United States of America
%	100.00%	100.00%
Maxcel Empreendimentos e Participações S.A. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Holding
Country	Brazil
%	100.00%	100.00%
Itacel - Terminal de Celulose de Itaqui S.A. (Indirect) \| BRAZIL
Company's Operations [Line Items]
Main activity	Port operations
Country	Brazil
%	100.00%	100.00%
Mucuri Energética S.A. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Power generation and distribution
Country	Brazil
%	100.00%	100.00%
Paineiras Logística e Transportes Ltda. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Road freight transport
Country	Brazil
%	100.00%	100.00%
Portocel - Terminal Espec. Barra do Riacho S.A. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Port operations
Country	Brazil
%	51.00%	51.00%
Projetos Especiais e Investimentos Ltda. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Commercialization of equipment and parts
Country	Brazil
%	100.00%	100.00%
SFBC Participações Ltda. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Packaging production
Country	Brazil
%	100.00%	100.00%
Stenfar S.A. Indl. Coml. Imp. Y. Exp. (Direct) \| ARGENTINA
Company's Operations [Line Items]
Main activity	Commercialization of paper and computer materials
Country	Argentina
%	100.00%	100.00%
Suzano Austria GmbH. (Direct) \| AUSTRIA
Company's Operations [Line Items]
Main activity	Business office
Country	Austria
%	100.00%	100.00%
Suzano Canada Inc. (Direct) \| CANADA
Company's Operations [Line Items]
Main activity	Lignin research and development
Country	Canada
%	100.00%	100.00%
Suzano Ecuador S.A.S. (Direct) \| ECUADOR
Company's Operations [Line Items]
Main activity	Business office
Country	Ecuador
%	100.00%	100.00%
Suzano Finland Oy (Direct) \| FINLAND
Company's Operations [Line Items]
Main activity	Industrialization and commercialization of cellulose, microfiber cellulose and paper
Country	Finland
%	100.00%	100.00%
Suzano International Finance B.V (Direct) \| NETHERLANDS
Company's Operations [Line Items]
Main activity	Financial fundraising
Country	Netherlands
%	100.00%	100.00%
Suzano International Holding B.V. (Direct) \| NETHERLANDS
Company's Operations [Line Items]
Main activity	Holding
Country	Netherlands
%	100.00%	100.00%
Suzano International Trade GmbH. (Direct) \| AUSTRIA
Company's Operations [Line Items]
Main activity	Business office
Country	Austria
%	100.00%	100.00%
Suzano Packaging LLC (Indirect) \| UNITED STATES
Company's Operations [Line Items]
Main activity	Production of coated and uncoated paperboard, used in the production of Liquid Packaging Board and Cupstock
Country	United States of America
%	100.00%	100.00%
Suzano Material Technology Development Ltd. (Direct) \| CHINA
Company's Operations [Line Items]
Main activity	Biotechnology research and development
Country	China
%	100.00%	100.00%
Suzano Netherlands B.V. (Direct) \| NETHERLANDS
Company's Operations [Line Items]
Main activity	Financial fundraising
Country	Netherlands
%	100.00%	100.00%
Suzano Operações Industriais e Florestais S.A. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Industrialization, commercialization and exporting of pulp
Country	Brazil
%	100.00%	100.00%
Suzano Pulp and Paper America Inc. (Direct) \| UNITED STATES
Company's Operations [Line Items]
Main activity	Business office
Country	United States of America
%	100.00%	100.00%
Suzano Pulp and Paper Europe S.A. (Direct) \| SWITZERLAND
Company's Operations [Line Items]
Main activity	Business office
Country	Switzerland
%	100.00%	100.00%
Suzano Shanghai Ltd. (Direct) \| CHINA
Company's Operations [Line Items]
Main activity	Business office
Country	China
%	100.00%	100.00%
Suzano Shanghai Trading Ltd. (Direct) \| CHINA
Company's Operations [Line Items]
Main activity	Financial fundraising
Country	China
%	100.00%	100.00%
Suzano Singapura Pte. Ltd (Direct) \| SINGAPORE
Company's Operations [Line Items]
Main activity	Business office
Country	Singapore
%	100.00%	100.00%
Suzano Trading International KFT(Direct) \| HUNGARY
Company's Operations [Line Items]
Main activity	Business office
Country	Hungary
%	100.00%	100.00%
Suzano Ventures LLC (Direct) \| UNITED STATES
Company's Operations [Line Items]
Main activity	Corporate venture capital
Country	United States of America
%	100.00%	100.00%
Veracel Celulose S.A. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Industrialization, commercialization and exporting of pulp
Country	Brazil
Proportion Of Ownership Interest in Equity Securities, accounting method, Joint operation	50.00%	50.00%
Biomas Serviços Ambientais, Restauração e Carbono S.A. (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Restoration, conservation and preservation of forests
Country	Brazil
Proportion of ownership interest in associate	16.66%	16.66%
Ensyn Corporation (Direct) \| UNITED STATES
Company's Operations [Line Items]
Main activity	Biofuel research and development
Country	United States of America
Proportion of ownership interest in associate	24.80%	24.80%
F&E Technologies LLC (Direct/Indirect) \| UNITED STATES
Company's Operations [Line Items]
Main activity	Biofuel production, except alcohol
Country	United States of America
Proportion of ownership interest in associate	50.00%	50.00%
Ibema Companhia Brasileira de Papel (Direct) \| BRAZIL
Company's Operations [Line Items]
Main activity	Industrialization and commercialization of paperboard
Country	Brazil
Proportion of ownership interest in associate	49.90%	49.90%
Simplifyber, Inc (Indirect) \| UNITED STATES
Company's Operations [Line Items]
Main activity	Production of consumer goods through the transformation of cellulose-based liquids
Country	United States of America
Proportion of ownership interest in associate	14.20%	13.91%
Spinnova Plc (Direct) (“Spinnova”) \| FINLAND
Company's Operations [Line Items]
Main activity	Research of sustainable raw materials for the textile industry
Country	Finland
Proportion of ownership interest in associate	18.76%	18.77%
Woodspin Oy (Direct/Indirect) (“Woodspin”) \| FINLAND
Company's Operations [Line Items]
Main activity	Development and production of cellulose-based fibers, yarns and textile filaments
Country	Finland
Proportion of ownership interest in associate	50.00%	50.00%
Bem Agro Integração e Desenvolvimento S.A. (Indirect) \| BRAZIL
Company's Operations [Line Items]
Main activity	Software solutions based on artificial intelligence and computer vision for agribusiness
Country	Brazil
Proportion of ownership interest in associate	5.82%	5.82%
Celluforce Inc. (Direct) \| CANADA
Company's Operations [Line Items]
Main activity	Nanocrystalline pulp research and development
Country	Canada
Proportion Of Ownership Interest in Equity Securities, accounting method, Joint operation	8.28%	8.28%
Lenzing Aktiengesellschaft (Indirect) \| AUSTRIA
Company's Operations [Line Items]
Main activity	Production of wood-based cellulose fibers
Country	Austria
Proportion of ownership interest in associate	15.00%	15.00%
Nfinite Nanotechnology Inc. (Indirect) \| CANADA
Company's Operations [Line Items]
Main activity	Research and development of smart nanocoatings
Country	Canada
Proportion Of Ownership Interest in Equity Securities, accounting method, Joint operation	5.00%	5.00%

Company's Operations - Cerrado Project (Details) - item	Dec. 31, 2025	Mar. 31, 2025
Company's Operations [Line Items]
Number of Industrial Units	16
Number of Technology Centers		7,000

Company's Operations - Cancellation of shares and new share buyback program (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2024	Mar. 31, 2025
Company's Operations [Line Items]
Stock canceled During Period, Shares	(60,000,000,000)
Share capital	R$ 19,235,546	R$ 19,235,546
Share Capital
Company's Operations [Line Items]
Share capital		R$ 19,269,281

Summary of Significant Accounting Policies (Details) - Spinnova Plc (Direct) (“Spinnova”) - Foreign countries - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Summary of significant accounting policies [Line Items]
Carrying amount	R$ 82,768	R$ 95,254
Proportion of ownership interest in associate	18.76%

Financial instruments and risk management - Classification (Details) - Financial risks management - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]
Financial assets	R$ 28,866,666	R$ 37,168,630
Financial liabilities	110,987,836	127,361,288
Financial Liabilities, Net of Financial Assets	82,121,170	90,192,658
Financial liabilities at amortised cost, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	103,856,388	116,906,468
Financial liabilities at amortised cost, category [member] \| Trade accounts payable
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	5,669,809	6,033,285
Financial liabilities at amortised cost, category [member] \| Loans, financing and debentures
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	91,042,571	101,435,531
Financial liabilities at amortised cost, category [member] \| Lease liabilities
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	6,851,519	6,972,915
Financial liabilities at amortised cost, category [member] \| Liabilities for assets acquisitions and subsidiaries
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	115,424	120,490
Financial liabilities at amortised cost, category [member] \| Dividends and interests on own capital payable
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,699	2,200,917
Financial liabilities at amortised cost, category [member] \| Other liabilities
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	169,366	143,330
At fair value through profit or loss
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,131,448	10,454,820
At fair value through profit or loss \| Derivative financial instruments
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,131,448	10,454,820
Financial assets at amortised cost, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	16,808,751	18,779,953
Financial assets at amortised cost, category [member] \| Cash and cash equivalents
Disclosure of detailed information about financial instruments [line items]
Financial assets	9,914,505	9,018,818
Financial assets at amortised cost, category [member] \| Trade accounts receivable
Disclosure of detailed information about financial instruments [line items]
Financial assets	6,354,237	9,132,860
Financial assets at amortised cost, category [member] \| Other assets
Disclosure of detailed information about financial instruments [line items]
Financial assets	540,009	628,275
At fair value through other comprehensive income
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,006,820	1,138,066
At fair value through other comprehensive income \| Investments
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,006,820	1,138,066
At fair value through profit or loss
Disclosure of detailed information about financial instruments [line items]
Financial assets	11,051,095	17,250,611
At fair value through profit or loss \| Derivative financial instruments
Disclosure of detailed information about financial instruments [line items]
Financial assets	4,132,330	3,887,100
At fair value through profit or loss \| Marketable securities
Disclosure of detailed information about financial instruments [line items]
Financial assets	R$ 6,918,765	R$ 13,363,511

Financial instruments - Fair value of loans and financing (Details) - Loans, financing and debentures - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]
Financial liabilities, at fair value	R$ 93,036,064	R$ 98,802,972
Bonds \| Foreign countries \| Fixed
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	Secondary Market
Financial liabilities, at fair value	R$ 44,487,544	48,734,909
Export credits (“export prepayments”) \| Foreign countries \| SOFR
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	SOFR
Financial liabilities, at fair value	R$ 21,383,389	22,740,891
Assets Financing \| Foreign countries \| SOFR
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	SOFR
Financial liabilities, at fair value	R$ 395,806	422,115
Assets Financing \| Country of domicile \| SOFR
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	DI 1
Financial liabilities, at fair value	R$ 58,807	60,566
ECA - Export Credit Agency \| Foreign countries \| SOFR
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	SOFR
Financial liabilities, at fair value	R$ 859,549	864,202
IFC - International Finance Corporation \| Foreign countries \| SOFR
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	SOFR
Financial liabilities, at fair value	R$ 6,233,706	6,261,715
Panda Bonds (1) \| Foreign countries \| Fixed
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	Fixed
Financial liabilities, at fair value	R$ 973,163	951,125
BNDES – TJLP [Member] \| Country of domicile \| BNDES – TJLP
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	DI 1
Financial liabilities, at fair value	R$ 159,443	171,109
BNDES – TLP [Member] \| Country of domicile \| BNDES – TLP
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	DI 1
Financial liabilities, at fair value	R$ 3,329,356	3,275,012
BNDES \| Country of domicile \| BNDES – SELIC
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	DI 1
Financial liabilities, at fair value	R$ 635,999	645,139
BNDES – TR \| Country of domicile \| BNDES – TR
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	DI 1
Financial liabilities, at fair value	R$ 34,070	33,466
BNDES - US$ \| Country of domicile \| BNDES - US$
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	DI 2
Financial liabilities, at fair value	R$ 104,408	106,966
Debentures \| Country of domicile \| CDI/IPCA
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	DI 1/IPCA
Financial liabilities, at fair value	R$ 12,127,177	12,002,992
NCE ("Export Credit Notes") \| Country of domicile \| CDI
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	DI 1
Financial liabilities, at fair value	R$ 107,507	108,308
NCR ("Rural Credit Notes") \| Country of domicile \| CDI
Disclosure of detailed information about financial instruments [line items]
Description of valuation techniques used to measure fair value less costs of disposal	DI 1
Financial liabilities, at fair value	R$ 2,146,140	R$ 2,424,457

Financial instruments - Liquidity risk management (Details) - Liquidity risk [member] - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	R$ 110,987,836	R$ 127,361,288
Financial Liabilities, Undiscounted Cash Flows	158,409,878	176,529,601
2025
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	15,235,006	24,896,300
2026
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	23,207,325	16,474,380
Later than two years and not later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	47,405,643	55,542,774
Later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	72,561,904	79,616,147
Trade accounts payable
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	5,669,809	6,033,285
Financial Liabilities, Undiscounted Cash Flows	5,669,809	6,033,285
Trade accounts payable \| 2025
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	5,669,809	6,033,285
Loans, financing and debentures
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	91,042,571	101,435,531
Financial Liabilities, Undiscounted Cash Flows	129,403,665	142,028,543
Loans, financing and debentures \| 2025
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	7,379,898	13,599,011
Loans, financing and debentures \| 2026
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	21,540,133	14,235,170
Loans, financing and debentures \| Later than two years and not later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	42,972,193	50,858,667
Loans, financing and debentures \| Later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	57,511,441	63,335,695
Leases
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	6,851,519	6,972,915
Financial Liabilities, Undiscounted Cash Flows	12,320,600	12,099,294
Leases \| 2025
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	1,633,972	1,302,590
Leases \| 2026
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	1,167,781	1,176,832
Leases \| Later than two years and not later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	3,068,159	3,094,493
Leases \| Later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	6,450,688	6,525,379
Liabilities for assets acquisitions and subsidiaries
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	115,424	120,490
Financial Liabilities, Undiscounted Cash Flows	139,098	146,082
Liabilities for assets acquisitions and subsidiaries \| 2025
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	21,722	23,425
Liabilities for assets acquisitions and subsidiaries \| 2026
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	20,772	22,400
Liabilities for assets acquisitions and subsidiaries \| Later than two years and not later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	96,604	100,257
Liabilities for assets acquisitions and subsidiaries \| Later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows
Derivative Liabilities
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,131,448	10,454,820
Financial Liabilities, Undiscounted Cash Flows	10,699,641	13,878,150
Derivative Liabilities \| 2025
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	449,418	1,676,180
Derivative Liabilities \| 2026
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	381,761	957,540
Derivative Liabilities \| Later than two years and not later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	1,268,687	1,489,357
Derivative Liabilities \| Later than five years [member]
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	8,599,775	9,755,073
Dividends and interests on own capital payable
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,699	2,200,917
Financial Liabilities, Undiscounted Cash Flows	7,699	2,200,917
Dividends and interests on own capital payable \| 2025
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	7,699	2,200,917
Other liabilities
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	169,366	143,330
Financial Liabilities, Undiscounted Cash Flows	169,366	143,330
Other liabilities \| 2025
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	72,488	60,892
Other liabilities \| 2026
Disclosure of detailed information about financial instruments [line items]
Financial Liabilities, Undiscounted Cash Flows	R$ 96,878	R$ 82,438

Financial instruments - Risk classification of trade accounts receivable (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disclosure of internal credit grades [line items]
Expected credit losses	R$ 95,111	R$ 97,934	R$ 95,053
Trade accounts receivable
Disclosure of internal credit grades [line items]
Expected credit losses	R$ 34,242	R$ 30,300	R$ 31,962

Financial instruments - Exchange rate risk management (Details) - Currency risk [member] - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2023	Mar. 31, 2025	Dec. 31, 2024
United States of America, Dollars
Disclosure of detailed information about financial instruments [line items]
Financial assets		R$ 15,641,027	R$ 17,543,554
Financial liabilities		(79,650,668)	(94,897,365)
Net Financial Assets (Liabilities)		(64,009,641)	(77,353,811)
United States of America, Dollars \| Trade accounts payable
Disclosure of detailed information about financial instruments [line items]
Financial liabilities		(1,527,479)	(1,350,763)
United States of America, Dollars \| Loans and financing
Disclosure of detailed information about financial instruments [line items]
Financial liabilities		(72,660,737)	(83,004,915)
United States of America, Dollars \| Liabilities for assets acquisitions and subsidiaries
Disclosure of detailed information about financial instruments [line items]
Financial liabilities		(87,698)	(93,308)
United States of America, Dollars \| Derivative financial instruments
Disclosure of detailed information about financial instruments [line items]
Financial liabilities		(5,374,754)	(10,448,379)
United States of America, Dollars \| Cash and cash equivalents
Disclosure of detailed information about financial instruments [line items]
Financial assets		8,157,219	6,496,039
United States of America, Dollars \| Marketable securities
Disclosure of detailed information about financial instruments [line items]
Financial assets		49,870	70,255
United States of America, Dollars \| Trade accounts receivable
Disclosure of detailed information about financial instruments [line items]
Financial assets		4,539,485	7,090,160
United States of America, Dollars \| Derivative financial instruments
Disclosure of detailed information about financial instruments [line items]
Financial assets		R$ 2,894,453	R$ 3,887,100
Selling transactions in the futures markets
Disclosure of detailed information about financial instruments [line items]
Value at Risk Time Horizon	24 years

Financial Instruments - Sensitivity Analysis – Foreign Exchange Rate Exposure – Except for Derivative Financial Instruments (Details) R$ in Thousands	3 Months Ended
	Mar. 31, 2025 BRL (R$)
Probable (base value) \| Cash and cash equivalents
Disclosure of detailed information about financial instruments [line items]
Financial assets	R$ 8,157,219
Probable (base value) \| Marketable securities
Disclosure of detailed information about financial instruments [line items]
Financial assets	49,870
Probable (base value) \| Trade accounts receivable
Disclosure of detailed information about financial instruments [line items]
Financial assets	4,539,485
Probable (base value) \| Trade accounts payable
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	(1,527,479)
Probable (base value) \| Loans and financing
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	(72,660,737)
Probable (base value) \| Liabilities for assets acquisitions and subsidiaries
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	(87,698)
Possible 25% \| Cash and cash equivalents
Disclosure of detailed information about financial instruments [line items]
Financial assets	2,039,305
Possible 25% \| Marketable securities
Disclosure of detailed information about financial instruments [line items]
Financial assets	12,468
Possible 25% \| Trade accounts receivable
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,134,871
Possible 25% \| Trade accounts payable
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	(381,870)
Possible 25% \| Loans and financing
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	(18,165,184)
Possible 25% \| Liabilities for assets acquisitions and subsidiaries
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	(21,925)
Remote 50% \| Cash and cash equivalents
Disclosure of detailed information about financial instruments [line items]
Financial assets	4,078,610
Remote 50% \| Marketable securities
Disclosure of detailed information about financial instruments [line items]
Financial assets	24,935
Remote 50% \| Trade accounts receivable
Disclosure of detailed information about financial instruments [line items]
Financial assets	2,269,743
Remote 50% \| Trade accounts payable
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	(763,740)
Remote 50% \| Loans and financing
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	(36,330,369)
Remote 50% \| Liabilities for assets acquisitions and subsidiaries
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	R$ (43,849)
Currency risk [member] \| Possible 25%
Disclosure of detailed information about financial instruments [line items]
Closing Foreign Exchange Rate, Percentage of increase (decrease)	25.00%
Currency risk [member] \| Remote 50%
Disclosure of detailed information about financial instruments [line items]
Closing Foreign Exchange Rate, Percentage of increase (decrease)	50.00%

Financial instruments - Sensitivity analysis – foreign exchange rate exposure – derivative financial instruments (Details) - Currency risk [member] - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2023
Possible 25%
Disclosure of detailed information about financial instruments [line items]
Closing Foreign Exchange Rate, Percentage of increase (decrease)	25.00%
Possible 25% \| U.S. Dollar to Brazilian Real \| Derivative options
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	R$ (8,199,971)
Possible 25% \| U.S. Dollar to Brazilian Real \| Derivative swaps
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(2,500,027)
Possible 25% \| U.S. Dollar to Brazilian Real \| Derivative Non-Deliverable Forward (‘NDF’) Contracts
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(255,861)
Possible 25% \| U.S. Dollar to Brazilian Real \| Embedded derivative
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(178,519)
Possible 25% \| U.S. Dollar to Brazilian Real \| Commodity Derivatives
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	R$ 7,337
Remote 50%
Disclosure of detailed information about financial instruments [line items]
Closing Foreign Exchange Rate, Percentage of increase (decrease)	50.00%
Remote 50% \| U.S. Dollar to Brazilian Real \| Derivative options
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	R$ (17,829,451)
Remote 50% \| U.S. Dollar to Brazilian Real \| Derivative swaps
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(4,807,341)
Remote 50% \| U.S. Dollar to Brazilian Real \| Derivative Non-Deliverable Forward (‘NDF’) Contracts
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(511,664)
Remote 50% \| U.S. Dollar to Brazilian Real \| Embedded derivative
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(357,039)
Remote 50% \| U.S. Dollar to Brazilian Real \| Commodity Derivatives
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	14,676
Probable (base value) \| U.S. Dollar to Brazilian Real \| Derivative options
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(1,518,526)
Probable (base value) \| U.S. Dollar to Brazilian Real \| Derivative swaps
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(1,449,747)
Probable (base value) \| U.S. Dollar to Brazilian Real \| Derivative Non-Deliverable Forward (‘NDF’) Contracts
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(36,977)
Probable (base value) \| U.S. Dollar to Brazilian Real \| Embedded derivative
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	(23,225)
Probable (base value) \| U.S. Dollar to Brazilian Real \| Commodity Derivatives
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	R$ 29,357
Selling transactions in the futures markets
Disclosure of detailed information about financial instruments [line items]
Value at Risk Time Horizon		24 years

Financial instruments - Sensitivity analysis – exposure to interest rates – except for derivative financial instruments (Details) R$ in Thousands	3 Months Ended
	Mar. 31, 2025 BRL (R$)
Possible 25% \| Cash and cash equivalents
Disclosure of detailed information about financial instruments [line items]
Financial assets	R$ 2,039,305
Possible 25% \| Marketable securities
Disclosure of detailed information about financial instruments [line items]
Financial assets	12,468
Possible 25% \| Loans and financing
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	R$ (18,165,184)
Possible 25% \| Interest rate risk [member]
Disclosure of detailed information about financial instruments [line items]
Sensitivity Analysis, Interest Rate, Percentage of Increase (Decrease)	25.00%
Possible 25% \| Interest rate risk [member] \| Cash and cash equivalents \| CDI/SELIC
Disclosure of detailed information about financial instruments [line items]
Financial assets	R$ 56,445
Possible 25% \| Interest rate risk [member] \| Marketable securities \| CDI/SELIC
Disclosure of detailed information about financial instruments [line items]
Financial assets	198,764
Possible 25% \| Interest rate risk [member] \| Loans and financing \| CDI/SELIC
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	322,682
Possible 25% \| Interest rate risk [member] \| Loans and financing \| BNDES – TJLP
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	3,513
Possible 25% \| Interest rate risk [member] \| Loans and financing \| SOFR
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	272,786
Remote 50% \| Cash and cash equivalents
Disclosure of detailed information about financial instruments [line items]
Financial assets	4,078,610
Remote 50% \| Marketable securities
Disclosure of detailed information about financial instruments [line items]
Financial assets	24,935
Remote 50% \| Loans and financing
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	R$ (36,330,369)
Remote 50% \| Interest rate risk [member]
Disclosure of detailed information about financial instruments [line items]
Sensitivity Analysis, Interest Rate, Percentage of Increase (Decrease)	50.00%
Remote 50% \| Interest rate risk [member] \| Cash and cash equivalents \| CDI/SELIC
Disclosure of detailed information about financial instruments [line items]
Financial assets	R$ 112,890
Remote 50% \| Interest rate risk [member] \| Marketable securities \| CDI/SELIC
Disclosure of detailed information about financial instruments [line items]
Financial assets	397,529
Remote 50% \| Interest rate risk [member] \| Loans and financing \| CDI/SELIC
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	645,364
Remote 50% \| Interest rate risk [member] \| Loans and financing \| BNDES – TJLP
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,026
Remote 50% \| Interest rate risk [member] \| Loans and financing \| SOFR
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	545,572
Probable (base value) \| Cash and cash equivalents
Disclosure of detailed information about financial instruments [line items]
Financial assets	8,157,219
Probable (base value) \| Marketable securities
Disclosure of detailed information about financial instruments [line items]
Financial assets	49,870
Probable (base value) \| Loans and financing
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	(72,660,737)
Probable (base value) \| Interest rate risk [member] \| Cash and cash equivalents \| CDI/SELIC
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,595,620
Probable (base value) \| Interest rate risk [member] \| Marketable securities \| CDI/SELIC
Disclosure of detailed information about financial instruments [line items]
Financial assets	5,618,783
Probable (base value) \| Interest rate risk [member] \| Loans and financing \| CDI/SELIC
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	9,121,748
Probable (base value) \| Interest rate risk [member] \| Loans and financing \| BNDES – TJLP
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	176,317
Probable (base value) \| Interest rate risk [member] \| Loans and financing \| SOFR
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	R$ 24,742,476

Financial instruments - Sensitivity analysis – exposure to interest rates – derivative financial instruments (Details) - Interest rate risk [member] R$ in Thousands	3 Months Ended
	Mar. 31, 2025 BRL (R$)
Possible 25%
Disclosure of detailed information about financial instruments [line items]
Sensitivity Analysis, Interest Rate, Percentage of Increase (Decrease)	25.00%
Possible 25% \| CDI \| Derivative options
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	R$ (710,263)
Possible 25% \| CDI \| Derivative swaps
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	(89,057)
Possible 25% \| SOFR \| Derivative swaps
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	R$ (133,048)
Remote 50%
Disclosure of detailed information about financial instruments [line items]
Sensitivity Analysis, Interest Rate, Percentage of Increase (Decrease)	50.00%
Remote 50% \| CDI \| Derivative options
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	R$ (1,419,548)
Remote 50% \| CDI \| Derivative swaps
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	(174,810)
Remote 50% \| SOFR \| Derivative swaps
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	(257,526)
Probable (base value) \| CDI \| Derivative options
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	(1,518,526)
Probable (base value) \| CDI \| Derivative swaps
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	(1,449,747)
Probable (base value) \| SOFR \| Derivative swaps
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	R$ (1,449,747)

Financial instruments - Sensitivity analysis to changes in the consumer price indices of the US economy (Details) R$ in Thousands	Mar. 31, 2025 BRL (R$)
Possible 25%
Disclosure of detailed information about financial instruments [line items]
Sensitivity Analysis, Percentage Change of Scenario	25.00%
Remote 50%
Disclosure of detailed information about financial instruments [line items]
Sensitivity Analysis, Percentage Change of Scenario	50.00%
Commodity price risk [member] \| Possible 25%
Disclosure of detailed information about financial instruments [line items]
Embedded derivative in a commitment to purchase standing wood, originating from a forest partnership agreement	R$ (31,031)
Commodity price risk [member] \| Remote 50%
Disclosure of detailed information about financial instruments [line items]
Embedded derivative in a commitment to purchase standing wood, originating from a forest partnership agreement	(63,614)
Commodity price risk [member] \| Probable (base value)
Disclosure of detailed information about financial instruments [line items]
Embedded derivative in a commitment to purchase standing wood, originating from a forest partnership agreement	R$ (23,225)

Financial instruments - Outstanding derivatives by contract type, including embedded derivatives (Details) R$ in Thousands, $ in Thousands	Mar. 31, 2025 BRL (R$)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 BRL (R$)	Dec. 31, 2024 USD ($)
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	R$ (2,999,118)		R$ (6,567,720)
Derivative financial instruments	888,004		1,006,427
Derivative financial instruments	3,244,326		2,880,673
Current derivative financial liabilities	(1,561,094)		(2,760,273)
Non-current derivative financial liabilities	(5,570,354)		(7,694,547)
Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	(1,555,503)		(4,660,846)
Debt hedges
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	(1,449,747)		(1,843,085)
Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	6,132		(63,789)
NDF (R$ x US$) \| Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value	185,000		581,000
Fair value in R$	(36,977)		(331,876)
Swap US$ e US-CPI (1) \| Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value	138,182		138,439
Fair value in R$	(23,226)		(80,759)
Swap VLSFO/Brent \| Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value	23,027		39,706
Fair value in R$	3,846		10,873
Interest rate swap contract [member] \| Zero Cost Collar \| Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		$ 7,264,700		$ 6,852,200
Fair value in R$	(1,518,526)		(4,328,970)
Interest rate swap contract [member] \| Zero Cost Collar \| Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		209,530		163,941
Fair value in R$	25,512		6,097
Interest rate swap contract [member] \| NDF (R$ x US$) \| Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		185,000		581,000
Fair value in R$	(36,977)		(331,876)
Interest rate swap contract [member] \| Swap SOFR x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		1,687,593		1,973,705
Fair value in R$	244,452		394,129
Interest rate swap contract [member] \| Swap IPCA x CDI (notional in Brazilian Reais) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		8,053,063		8,128,395
Fair value in R$	(764,449)		(825,899)
Interest rate swap contract [member] \| Swap CNH x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		165,815
Fair value in R$	(7,456)
Interest rate swap contract [member] \| Swap CDI x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		903,827		909,612
Fair value in R$	(570,496)		(776,261)
Interest rate swap contract [member] \| Swap CDI x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		610,171		610,171
Fair value in R$	(331,078)			(590,764)
Interest rate swap contract [member] \| Swap SOFR x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		150,961		150,961
Fair value in R$	(20,720)			(37,850)
Interest rate swap contract [member] \| Swap US$ e US-CPI (1) \| Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		138,182		138,439
Fair value in R$	(23,226)		(80,759)
Interest rate swap contract [member] \| Swap VLSFO/Brent \| Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value \| $		$ 23,027		$ 39,706
Fair value in R$	3,846		10,873
Derivative Assets \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	3,497,526		3,594,291
Derivative Assets \| Swap SOFR x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	1,687,593		1,973,705
Fair value in R$	250,548		424,824
Derivative Assets \| Swap IPCA x CDI (notional in Brazilian Reais) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	8,456,042		8,382,699
Fair value in R$	900,125		927,586
Derivative Assets \| Swap CNH x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	1,200,000		1,200,000
Fair value in R$	25,935
Derivative Assets \| Swap CDI x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	4,650,715		4,748,394
Fair value in R$	1,441,090		1,482,759
Derivative Assets \| Swap CDI x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	3,117,625		3,117,625
Fair value in R$	874,462		754,173
Derivative Assets \| Swap SOFR x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	150,961		150,961
Fair value in R$	5,366		4,949
Derivative Liabilities \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	(4,947,273)		(5,437,376)
Derivative Liabilities \| Swap SOFR x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	1,687,593		1,973,705
Fair value in R$	(6,096)		(30,695)
Derivative Liabilities \| Swap IPCA x CDI (notional in Brazilian Reais) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	8,053,063		8,128,395
Fair value in R$	(1,664,574)		(1,753,485)
Derivative Liabilities \| Swap CNH x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	165,815
Fair value in R$	(33,391)		(6,440)
Derivative Liabilities \| Swap CDI x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	903,827		909,612
Fair value in R$	(2,011,586)		(2,259,020)
Derivative Liabilities \| Swap CDI x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	610,171		610,171
Fair value in R$	(1,205,540)		(1,344,937)
Derivative Liabilities \| Swap SOFR x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	150,961		150,961
Fair value in R$	R$ (26,086)		R$ (42,799)

Financial instruments - Fair Value Maturity Schedule (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	R$ (2,999,118)	R$ (6,567,720)
2025
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	(292,400)	(1,753,846)
2026
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	(505,985)	(1,699,768)
2027
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	247,451	(36,905)
2028 onwards
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	R$ (2,448,184)	R$ (3,077,201)

Financial instruments - Outstanding assets and liabilities derivatives positions (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	R$ (2,999,118)	R$ (6,567,720)
Debt hedges
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	(1,449,747)	(1,843,085)
Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	(1,555,503)	(4,660,846)
Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	6,132	(63,789)
Zero cost collar (U.S.$ x R$) \| Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value	7,264,700	6,852,200
Fair value in R$	(1,518,526)	(4,328,970)
Zero cost collar (U.S.$ x R$) \| Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value	209,530	163,941
Fair value in R$	25,512	6,097
NDF (R$ x US$) \| Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value	185,000	581,000
Fair value in R$	(36,977)	(331,876)
Swap US$ e US-CPI (1) \| Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value	138,182	138,439
Fair value in R$	(23,226)	(80,759)
Swap VLSFO/Brent \| Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Notional value	23,027	39,706
Fair value in R$	3,846	10,873
Derivative Assets \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	3,497,526	3,594,291
Derivative Assets \| Swap CDI x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	4,650,715	4,748,394
Fair value in R$	1,441,090	1,482,759
Derivative Assets \| Swap SOFR x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	1,687,593	1,973,705
Fair value in R$	250,548	424,824
Derivative Assets \| Swap IPCA x CDI (notional in Brazilian Reais) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	8,456,042	8,382,699
Fair value in R$	900,125	927,586
Derivative Assets \| Swap CDI x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	3,117,625	3,117,625
Fair value in R$	874,462	754,173
Derivative Assets \| Swap SOFR x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	150,961	150,961
Fair value in R$	5,366	4,949
Derivative Assets \| Swap CNH x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	1,200,000	1,200,000
Fair value in R$	25,935
Derivative Liabilities \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Fair value in R$	(4,947,273)	(5,437,376)
Derivative Liabilities \| Swap CDI x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	903,827	909,612
Fair value in R$	(2,011,586)	(2,259,020)
Derivative Liabilities \| Swap SOFR x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	1,687,593	1,973,705
Fair value in R$	(6,096)	(30,695)
Derivative Liabilities \| Swap IPCA x CDI (notional in Brazilian Reais) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	8,053,063	8,128,395
Fair value in R$	(1,664,574)	(1,753,485)
Derivative Liabilities \| Swap CDI x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	610,171	610,171
Fair value in R$	(1,205,540)	(1,344,937)
Derivative Liabilities \| Swap SOFR x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	150,961	150,961
Fair value in R$	(26,086)	(42,799)
Derivative Liabilities \| Swap CNH x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Notional value	165,815
Fair value in R$	R$ (33,391)	R$ (6,440)

Financial instruments - Fair value settled amounts (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	R$ 124,558	R$ (550,581)
Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	(28,667)	650,845
Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	8,733	89,327
Debt hedges
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	144,492	(1,290,753)
Zero cost collar (R$ x U.S.$) \| Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	1,475	645,759
NDF (R$ x US$) \| Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	(30,142)	(68,695)
NDF (€ x US$) \| Operational Hedge
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement		73,781
Swap VLSFO/other \| Commodity Hedge
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	8,733	89,327
Swap CDI x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	90,068	(1,635,058)
Swap IPCA x CDI (notional in Brazilian Reais) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	(43,312)	(59,243)
Swap Pre-Fixed to US$ \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement		(221,462)
Swap SOFR x SOFR (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	1,504	2,199
Swap SOFR x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	21,482	19,074
Swap SOFR x Fixed (US$) \| Debt hedges
Disclosure of detailed information about financial instruments [line items]
Proceeds From (Payments For) Derivative Instrument, Settlement	R$ 74,750	R$ 603,737

Financial instruments - Fair value hierarchy (Details) - At fair value - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]
Financial assets	R$ 34,919,470	R$ 40,671,678
Financial liabilities	7,131,448	10,454,820
At fair value through profit or loss
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,131,448	10,454,820
At fair value through profit or loss \| Derivative financial instruments
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,131,448	10,454,820
Level 1
Disclosure of detailed information about financial instruments [line items]
Financial assets	2,198,417	2,303,646
Level 2
Disclosure of detailed information about financial instruments [line items]
Financial assets	9,824,062	16,046,835
Financial liabilities	7,131,448	10,454,820
Level 2 \| At fair value through profit or loss
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,131,448	10,454,820
Level 2 \| At fair value through profit or loss \| Derivative financial instruments
Disclosure of detailed information about financial instruments [line items]
Financial liabilities	7,131,448	10,454,820
Level 3
Disclosure of detailed information about financial instruments [line items]
Financial assets	22,896,991	22,321,197
At fair value through profit or loss
Disclosure of detailed information about financial instruments [line items]
Financial assets	11,051,095	17,250,611
At fair value through profit or loss \| Level 1
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,227,033	1,203,776
At fair value through profit or loss \| Level 2
Disclosure of detailed information about financial instruments [line items]
Financial assets	9,824,062	16,046,835
At fair value through profit or loss \| Derivative financial instruments
Disclosure of detailed information about financial instruments [line items]
Financial assets	4,132,330	3,887,100
At fair value through profit or loss \| Derivative financial instruments \| Level 2
Disclosure of detailed information about financial instruments [line items]
Financial assets	4,132,330	3,887,100
At fair value through profit or loss \| Marketable securities
Disclosure of detailed information about financial instruments [line items]
Financial assets	6,918,765	13,363,511
At fair value through profit or loss \| Marketable securities \| Level 1
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,227,033	1,203,776
At fair value through profit or loss \| Marketable securities \| Level 2
Disclosure of detailed information about financial instruments [line items]
Financial assets	5,691,732	12,159,735
At fair value through other comprehensive income
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,006,820	1,138,066
At fair value through other comprehensive income \| Level 1
Disclosure of detailed information about financial instruments [line items]
Financial assets	971,384	1,099,870
At fair value through other comprehensive income \| Level 3
Disclosure of detailed information about financial instruments [line items]
Financial assets	35,436	38,196
At fair value through other comprehensive income \| Other investments
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,006,820	1,138,066
At fair value through other comprehensive income \| Other investments \| Level 1
Disclosure of detailed information about financial instruments [line items]
Financial assets	971,384
At fair value through other comprehensive income \| Other investments \| Level 3
Disclosure of detailed information about financial instruments [line items]
Financial assets	35,436	38,196
Financial assets at amortised cost, category [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	22,861,555	22,283,001
Financial assets at amortised cost, category [member] \| Level 3
Disclosure of detailed information about financial instruments [line items]
Financial assets	22,861,555	22,283,001
Financial assets at amortised cost, category [member] \| Biological assets [domain]
Disclosure of detailed information about financial instruments [line items]
Financial assets	22,861,555	22,283,001
Financial assets at amortised cost, category [member] \| Biological assets [domain] \| Level 3
Disclosure of detailed information about financial instruments [line items]
Financial assets	R$ 22,861,555	R$ 22,283,001

Cash and cash equivalents (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
Cash and banks	R$ 8,318,885	R$ 6,596,510
Cash and cash equivalents	R$ 9,914,505	9,018,818	R$ 4,203,126	R$ 8,345,871
Cash and banks \| Fixed
Cash and Cash Equivalents [Line Items]
Average yield p.a. %	4.60%
Country of domicile
Cash and Cash Equivalents [Line Items]
Fixed-term deposits (compromised)	R$ 1,595,620	R$ 2,422,308
Country of domicile \| Fixed-term deposits \| CDI
Cash and Cash Equivalents [Line Items]
Percentage of basis used to calculate interest rate	101.30%

Marketable securities (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of financial assets [line items]
Marketable Securities	R$ 6,918,765	R$ 13,363,511
Current	6,516,323	12,971,547
Non-Current	402,442	391,964
Country of domicile
Disclosure of financial assets [line items]
Marketable Securities	6,868,895	13,293,256
Foreign countries
Disclosure of financial assets [line items]
Marketable Securities	R$ 49,870	70,255
Private Funds \| CDI
Disclosure of financial assets [line items]
Percentage of basis used to calculate interest rate	98.90%
Private Funds \| Country of domicile
Disclosure of financial assets [line items]
Marketable Securities	R$ 382,388	552,635
Private Securities \| CDI/IPCA
Disclosure of financial assets [line items]
Percentage of basis used to calculate interest rate	6.15%
Private Securities \| Country of domicile
Disclosure of financial assets [line items]
Marketable Securities	R$ 1,227,033	1,203,776
Private Securities (CDBs) \| CDI
Disclosure of financial assets [line items]
Percentage of basis used to calculate interest rate	100.80%
Private Securities (CDBs) \| Country of domicile
Disclosure of financial assets [line items]
Marketable Securities	R$ 4,833,953	11,144,881
CDBs - Escrow Account \| CDI
Disclosure of financial assets [line items]
Percentage of basis used to calculate interest rate	101.76%
CDBs - Escrow Account \| Country of domicile
Disclosure of financial assets [line items]
Marketable Securities	R$ 402,442	391,964
Other \| Foreign countries
Disclosure of financial assets [line items]
Marketable Securities	R$ 49,870	70,255
Other (Restricted financial investment) \| CDI
Disclosure of financial assets [line items]
Percentage of basis used to calculate interest rate	99.30%
Other (Restricted financial investment) \| Country of domicile
Disclosure of financial assets [line items]
Marketable Securities	R$ 23,079

Trade accounts receivables - Breakdown of balances (Details) - Trade accounts receivable - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Trade Accounts Receivables [Line Items]
Current financial assets	R$ 6,354,237	R$ 9,132,860
Factoring of receivables [member]
Trade Accounts Receivables [Line Items]
Current financial assets	6,364,876	6,821,539
Expected credit losses
Trade Accounts Receivables [Line Items]
Current financial assets	(34,242)	(30,300)
Country of domicile \| Accumulated cost \| Third party
Trade Accounts Receivables [Line Items]
Current financial assets	1,768,988	1,989,455
Country of domicile \| Accumulated cost \| Total for all related parties
Trade Accounts Receivables [Line Items]
Current financial assets	79,826	83,343
Foreign countries \| Accumulated cost \| Third party
Trade Accounts Receivables [Line Items]
Current financial assets	4,539,485	7,090,160
Foreign countries \| Accumulated cost \| Total for all related parties
Trade Accounts Receivables [Line Items]
Current financial assets	R$ 180	R$ 202

Trade accounts receivables - Breakdown of trade accounts receivable by maturity (Details) - Trade accounts receivable - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Trade Accounts Receivables [Line Items]
Current financial assets	R$ 6,354,237	R$ 9,132,860
Current \| Current
Trade Accounts Receivables [Line Items]
Current financial assets	5,508,066	8,216,570
Overdue \| Up to 30 days
Trade Accounts Receivables [Line Items]
Current financial assets	511,482	682,142
Overdue \| From 31 to 60 days
Trade Accounts Receivables [Line Items]
Current financial assets	129,830	134,674
Overdue \| From 61 to 90 days
Trade Accounts Receivables [Line Items]
Current financial assets	99,636	38,187
Overdue \| From 91 to 120 days
Trade Accounts Receivables [Line Items]
Current financial assets	41,069	17,701
Overdue \| From 121 to 180 days
Trade Accounts Receivables [Line Items]
Current financial assets	30,151	12,402
Overdue \| From 181 days
Trade Accounts Receivables [Line Items]
Current financial assets	R$ 34,003	R$ 31,184

Trade accounts receivables - Roll-forward of the expected credit losses (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Reconciliation of changes in allowance account for credit losses of financial assets [abstract]
Opening Balance	R$ 97,934	R$ 95,053
Closing Balance		97,934
Trade accounts receivable
Reconciliation of changes in allowance account for credit losses of financial assets [abstract]
Opening Balance	30,300	31,962
(Provisions)/Reversals, net	(7,653)	(2,585)
Utilisation Allowance Account For Credit Losses Financial Assetss	3,098	5,790
Increase Decrease In Allowance Account For Credi tLosses Financial Assets	R$ (613)	1,543
Closing Balance		R$ 30,300

Trade accounts receivables - Main customers (Details)	Mar. 31, 2025	Dec. 31, 2024
Net Sales \| Pulp
Disclosure of nature and extent of risks arising from financial instruments [line items]
Concentration Risk, Percentage	11.46%	10.00%

Inventories (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Inventories [Line Items]
Current finished goods
Current work in progress	142,686	135,380
Spare parts and other	1,292,327	1,302,534
(-) Expected losses	(95,111)	(97,934)
Inventories	8,642,882	7,962,324
Pulp \| Country of domicile
Inventories [Line Items]
Current finished goods	972,514	801,623
Pulp \| Foreign countries
Inventories [Line Items]
Current finished goods	1,882,700	1,510,985
Paper \| Country of domicile
Inventories [Line Items]
Current finished goods	653,493	561,409
Paper \| Foreign countries
Inventories [Line Items]
Current finished goods	429,903	362,027
Wood
Inventories [Line Items]
Current work in progress	2,284,719	2,287,406
Operating supplies and packaging
Inventories [Line Items]
Current work in progress	R$ 1,079,651	R$ 1,098,894

Inventories - Roll-forward of estimated losses (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Inventories [Line Items]
Opening Balance	R$ 97,934	R$ 95,053
Additional allowance recognised in profit or loss, allowance account for credit losses	7,592	83,705
Reversal Allowance Account For Credit Losses Financial Assets	3,117	6,352
Utilisation Allowance Account For Credit Losses Financial Assets	R$ 7,298	74,472
Closing Balance		R$ 97,934

Recoverable taxes - Summary (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disclosure of Tax Receivables and Payables [Line Items]
IRPJ/CSLL – prepayments and withheld taxes		R$ 384,508	R$ 227,464
PIS/COFINS – on acquisitions of property, plant and equipment		180,090	187,126
PIS/COFINS – operations		825,425	789,667
PIS/COFINS – exclusions from ICMS		381,972	405,407
ICMS – on acquisitions of property, plant and equipment		476,117	471,825
ICMS – operations		1,678,217	1,654,162
Reintegra program		78,743	70,610
Recoverable Taxes, Other Taxes and Contributions		77,666	64,444
Provision for Impairment of Value Added Tax on Sales and Services credits	R$ (1,627,727)	(1,627,727)	(1,581,961)	R$ (1,452,435)
Tax Assets		2,455,011	2,288,744
Recoverable taxes		1,412,040	1,109,619
Recoverable taxes		R$ 1,042,971	R$ 1,179,125

Recoverable taxes - Roll-forward of provision for loss (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Recoverable Taxes [Abstract]
Opening Balance	R$ 1,581,961	R$ 1,452,435
Increase in Provision for Impairment of Value Added Tax on Sales and Services Credits	(108,166)	(316,741)
Decrease In Provision For Impairment Of Value Added Tax On Sales And Services Credits Due To Recovery Of Credits	62,400	186,014
Provision For Impairment Of Value Added Tax On Sales And Services Credits, Write-Off		1,201
Closing Balance	R$ 1,627,727	R$ 1,581,961

Advances to suppliers (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Advances to Suppliers [Line Items]
Current	R$ 85,581	R$ 92,133
Non-current	2,496,154	2,503,537
Total
Advances to Suppliers [Line Items]
Advances to Suppliers.	2,581,735	2,595,670
Forestry development program and partnerships
Advances to Suppliers [Line Items]
Advances to Suppliers.	2,496,154	2,503,537
Advance to suppliers - others
Advances to Suppliers [Line Items]
Advances to Suppliers.	R$ 85,581	R$ 92,133

Related parties - Balances recognized in assets and liabilities and amounts transacted during the period (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Disclosure of Transactions Between Related Parties [Line Items]
Assets	R$ 83,953		R$ 87,493
Liabilities	(2,985)		(1,076,419)
Sales (purchase)	47,628	R$ 39,569
Dividends and interest on own capital payable	7,699		2,200,917
Trade accounts receivable
Disclosure of Transactions Between Related Parties [Line Items]
Assets	80,006		83,545
Other assets
Disclosure of Transactions Between Related Parties [Line Items]
Assets	3,947		3,948
Trade accounts payable
Disclosure of Transactions Between Related Parties [Line Items]
Liabilities	(2,985)		(1,457)
Dividends and interests on own capital payable
Disclosure of Transactions Between Related Parties [Line Items]
Liabilities			(1,074,962)
Transactions with majority shareholders
Disclosure of Transactions Between Related Parties [Line Items]
Assets			4
Liabilities	(21)		(1,074,983)
Sales (purchase)	12	13
Suzano Holding S.A.
Disclosure of Transactions Between Related Parties [Line Items]
Assets			4
Liabilities	(21)		(630,387)
Sales (purchase)	12	13
Controller
Disclosure of Transactions Between Related Parties [Line Items]
Liabilities			(336,205)
Managements and related persons
Disclosure of Transactions Between Related Parties [Line Items]
Assets
Liabilities			(55,627)
Sales (purchase)
Alden Fundo de Investimento em Ações
Disclosure of Transactions Between Related Parties [Line Items]
Liabilities			(52,764)
Transactions with companies of the Suzano Group and other related parties
Disclosure of Transactions Between Related Parties [Line Items]
Assets	83,953		87,489
Liabilities	(2,964)		(1,436)
Sales (purchase)	47,616	39,556
Management
Disclosure of Transactions Between Related Parties [Line Items]
Assets	68		61
Sales (purchase)	117	143
Bexma Participacoes Ltda.
Disclosure of Transactions Between Related Parties [Line Items]
Assets
Sales (purchase)	1	1
Bizma Investimentos Ltda. [Member]
Disclosure of Transactions Between Related Parties [Line Items]
Sales (purchase)		1
Naman Capoital Ltda.
Disclosure of Transactions Between Related Parties [Line Items]
Assets	1
Sales (purchase)	1
Civelec Participações Ltda
Disclosure of Transactions Between Related Parties [Line Items]
Assets	3,860		3,860
Sales (purchase)
Fundacao Arymax
Disclosure of Transactions Between Related Parties [Line Items]
Assets
Sales (purchase)		1
Ibema Companhia Brasileira de Papel
Disclosure of Transactions Between Related Parties [Line Items]
Assets	79,826		83,343
Liabilities	(2,325)		(1,413)
Sales (purchase)	49,430	40,934
Instituto Ecofuturo - Futuro Para o Desenvolvimento Sustentavel
Disclosure of Transactions Between Related Parties [Line Items]
Assets	22		21
Liabilities
Sales (purchase)	(1,472)	(1,620)
IPFL Holding S.A
Disclosure of Transactions Between Related Parties [Line Items]
Assets			1
Sales (purchase)	2	1
Mabex Representacoes e Participacoes Ltda.
Disclosure of Transactions Between Related Parties [Line Items]
Liabilities	(624)		(23)
Sales (purchase)	(600)	(34)
Nemonorte Imoveis e Participacoes Ltda.
Disclosure of Transactions Between Related Parties [Line Items]
Liabilities	(15)
Sales (purchase)	(45)	R$ (44)
Woodspin Oy
Disclosure of Transactions Between Related Parties [Line Items]
Assets	176		R$ 203
Sales (purchase)	R$ 182

Related parties - Management compensation (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Short-term benefits
Salary or compensation	R$ 23,280	R$ 13,065
Direct and indirect benefits	328	771
Bonus	4,499	2,912
Total Short-term benefits	28,107	16,748
Long-term benefits
Share-based compensation plan	49,415	14,261
Total Long-term benefits	49,415	14,261
Total	R$ 77,522	R$ 31,009

Income taxes - Deferred taxes (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Non-current assets		R$ 4,431,946	R$ 7,984,015
Non-current liabilities			12,596
Derivative, passive temporary difference	R$ 1,396,134
Derivative, asset temporary difference	2,413,299
Lease, passive temporary difference	1,741,146
Lease, asset temporary difference	R$ 2,283,754
Total deferred tax assets
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		10,541,364	14,124,914
Tax loss carried forward
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		796,552	796,831
Negative tax basis of social contribution carried forward
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		304,015	307,143
Provision for judicial liabilities
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		308,825	324,873
Operating provisions
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		330,443	515,779
Exchange rate variations
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		5,381,844	7,385,034
Derivatives losses (“MtM”)(1)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		1,017,165	2,230,835
Amortization of fair value adjustments arising from business combinations
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		624,513	625,745
Unrealized profit on inventories
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		423,772	539,157
Leases
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		542,608	606,944
Total deferred tax liabilities
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		6,109,418	6,153,495
Goodwill - Tax benefit on unamortized goodwill
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		1,661,945	1,589,887
Property, plant and equipment - deemed cost
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		1,050,988	1,066,883
Depreciation for tax-incentive reason
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		717,303	733,640
Capitalized loan costs
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		938,284	947,482
Fair value of biological assets
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		1,237,672	1,317,095
Deferred taxes, net of fair value adjustment
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		335,034	342,141
Tax credits - gains from tax lawsuit (exclusion of ICMS from the PIS and COFINS basis)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		129,893	137,928
Provision of deferred taxes on results of subsidiaries abroad
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		33,476
Other temporary differences
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		4,823	18,439
Provisions for other losses
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		563,416	547,242
Employee benefit plans
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		R$ 248,211	R$ 245,331

Income and social contributions taxes - Breakdown of accumulated tax losses and social contribution tax losses carried forward (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]
Tax loss carried forward	R$ 3,186,208	R$ 3,187,324
Negative tax basis of social contribution carried forward	R$ 3,377,944	R$ 3,412,700

Income and social contributions taxes - Roll-forward of deferred tax assets (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]
Opening balance	R$ 7,971,419	R$ 533,836
Tax loss carried forward	(279)	(413,137)
Negative tax basis of social contribution carried forward	(3,128)	(149,887)
Provision for judicial liabilities	(16,048)	715
Operating provisions and other losses	(166,282)	93,545
Exchange rate variation	(2,003,190)	5,000,881
Derivative (gains) losses (“MtM”)	(1,213,670)	2,908,925
Amortization of fair value adjustments arising from business combinations	5,875	193
Unrealized profit on inventories	(115,385)	387,579
Leases	(64,336)	250,834
Goodwill - tax benefit on unamortized goodwill	(72,058)	(288,233)
Property, plant and equipment - deemed cost	15,895	70,600
Depreciation accelerated for tax-incentive reason	16,337	66,217
Capitalized loan costs	9,198	(307,419)
Fair value of biological assets	79,423	(201,663)
Deferred taxes on the results of subsidiaries abroad	(33,476)
Credits on exclusion of ICMS from the PIS/COFINS tax base	8,035	12,763
Other temporary differences	13,616	5,670
Closing balance	R$ 4,431,946	R$ 7,971,419

Income and social contribution taxes - Reconciliation of the effects of income tax and social contribution on profit or loss (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]
Net income (loss) before taxes	R$ 9,955,248	R$ (487,822)
Income tax and social contribution benefit (expense) at statutory nominal rate of 34%	(3,384,784)	165,859
Taxation (difference) on profit of associates in Brazil and abroad	(283,517)	510,772
Equity method	(5,806)	(3,368)
Credit related to Reintegra Program	2,912	2,038
Director bonuses	(11,912)	(3,842)
Tax incentives (Note 12.3)	67,802	11,315
Donations/Fines – Other	8,235	25,080
Total tax expense (income)	(3,607,070)	707,854
Current	(57,542)	(90,923)
Deferred	(2,592,733)	605,999
Total Income Tax Expense income	(2,650,275)	515,076
Current	(9,558)	(23,431)
Deferred	(947,237)	216,209
Total Social Contribution Expense Income	R$ (956,795)	R$ 192,778

Income taxes - Additional information (Details) R$ in Thousands	3 Months Ended
	Mar. 31, 2025 BRL (R$)
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]
Applicable Tax Rate, Income Tax and Social Contribution Taxes, Base Rate	15.00%
Applicable Tax Rate, Income Tax, Additional Tax on Taxable Income Above Threshold Amount	10.00%
Applicable Tax Rate, Social Contribution Taxes, Additional Tax on Taxable Income Above Threshold Amount	9.00%
Thres hold Amount Of Income For Additional Tax Rate	R$ 240

Biological assets - Roll-forward of biological assets (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Disclosure of reconciliation of changes in biological assets [line items]
Opening Balance	R$ 22,283,001	R$ 18,278,582
Additions	1,836,180	7,180,450
Additions of merged companies		366,785
Depletions	(1,234,226)	(4,831,916)
Transfers	15,233	102,790
Gain on fair value adjustments		(1,431,530)
Disposals	(6,356)	(130,922)
Write-offs	(32,277)	(114,298)
Closing Balance	R$ 22,861,555	R$ 22,283,001

Biological assets - Fair value adjustment (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Gains (losses) on fair value adjustment, biological assets [abstract]
Fair value adjustment of biological assets		R$ 1,431,530

Investments - Investments Breakdown (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Investments in subsidiaries, joint ventures and associates reported in separate financial statements [abstract]
Investments in associates and joint ventures	R$ 420,618	R$ 453,371
Goodwill	224,096	225,486
Other investments evaluated at fair value through other comprehensive income	1,006,820	1,138,066
Total	R$ 1,651,534	R$ 1,816,923

Investments - Investments in Associates and Joint Ventures (Details) R$ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2025 BRL (R$)	Mar. 31, 2025 BRL (R$) € / shares	Mar. 31, 2024 BRL (R$)	Mar. 31, 2024 BRL (R$) € / shares	Dec. 31, 2024 BRL (R$)	Dec. 31, 2023 BRL (R$)
Disclosure of joint ventures [line items]
Equity	R$ 38,535,646	R$ 38,535,646	R$ 44,724,599	R$ 44,724,599	R$ 32,415,575	R$ 44,810,300
Income (expenses) of the period	R$ 6,348,178		220,032
%	100.00%				100.00%
In the income (expenses) for the period	R$ (17,077)		(9,907)
Non-current financial assets at fair value through other comprehensive income	1,427,438	1,427,438			R$ 1,591,437
Associate \| Foreign
Disclosure of joint ventures [line items]
Carrying amount	111,247	111,247			125,316
In the income (expenses) for the period	R$ (12,252)		(10,473)
Ensyn Corporation \| Foreign
Disclosure of joint ventures [line items]
Participation equity (%)	24.80%
Carrying amount	R$ (232)	(232)			2
In the income (expenses) for the period	R$ (3,091)		(1,408)
Spinnova Plc \| Foreign
Disclosure of joint ventures [line items]
Participation equity (%)	18.76%
Carrying amount	R$ 82,768	82,768			95,254
In the income (expenses) for the period	(9,161)		(9,065)
Joint ventures
Disclosure of joint ventures [line items]
Carrying amount	309,371	309,371			328,055
In the income (expenses) for the period	R$ (4,825)		566
Biomas \| Domestic (Brazil)
Disclosure of joint ventures [line items]
Participation equity (%)	16.66%
Carrying amount	R$ 1,473	1,473			2,923
In the income (expenses) for the period	R$ (1,449)		(1,142)
Ibema Companhia Brasileira de Papel \| Domestic (Brazil)
Disclosure of joint ventures [line items]
Participation equity (%)	49.90%
Carrying amount	R$ 188,618	188,618			193,901
In the income (expenses) for the period	R$ 3,551		7,461
F&E Technologies LLC \| Foreign
Disclosure of joint ventures [line items]
Participation equity (%)	50.00%
Carrying amount	R$ 5,914	5,914			6,378
In the income (expenses) for the period
Woodspin Oy \| Foreign
Disclosure of joint ventures [line items]
Participation equity (%)	50.00%
Carrying amount	R$ 113,366	113,366			124,853
In the income (expenses) for the period	(6,927)		(5,753)
Total other investments evaluated at fair value
Disclosure of joint ventures [line items]
In the income (expenses) for the period
Non-current financial assets at fair value through other comprehensive income	R$ 1,006,820	1,006,820			1,138,066
Bem Agro Integração e Desenvolvimento S.A. (Indirect)
Disclosure of joint ventures [line items]
%	5.82%
Bem Agro Integração e Desenvolvimento S.A. (Indirect) \| Domestic (Brazil)
Disclosure of joint ventures [line items]
Non-current financial assets at fair value through other comprehensive income	R$ 3,737	3,737			4,026
Celluforce Inc. (Direct)
Disclosure of joint ventures [line items]
%	8.28%
Celluforce Inc. (Direct) \| Foreign
Disclosure of joint ventures [line items]
Non-current financial assets at fair value through other comprehensive income	R$ 25,813	25,813			27,823
Nfinite Nanotechnology Inc. (Indirect)
Disclosure of joint ventures [line items]
%	5.00%
Nfinite Nanotechnology Inc. (Indirect) \| Foreign
Disclosure of joint ventures [line items]
Non-current financial assets at fair value through other comprehensive income	R$ 5,886	5,886			6,347
Lenzing Aktiengesellschaft (Indirect)
Disclosure of joint ventures [line items]
%	15.00%
Lenzing Aktiengesellschaft (Indirect) \| Foreign
Disclosure of joint ventures [line items]
Non-current financial assets at fair value through other comprehensive income	R$ 971,384	971,384			1,099,870
Simplifyber, Inc (Indirect) \| Foreign
Disclosure of joint ventures [line items]
Participation equity (%)	14.20%
Carrying amount	R$ 28,711	28,711			R$ 30,060
In the income (expenses) for the period
Ensyn Corporation
Disclosure of joint ventures [line items]
Equity	(936)	(936)
Income (expenses) of the period	(7,046)
Spinnova Plc
Disclosure of joint ventures [line items]
Equity	441,192	R$ 441,192
Income (expenses) of the period	(49,051)
NASDAQ, Nordic Growth Market, Average Share Price \| € / shares		R$ 0.52		R$ 0.95
Biomas \| Domestic (Brazil)
Disclosure of joint ventures [line items]
Equity	8,839	R$ 8,839
Income (expenses) of the period	(8,697)
Ibema Companhia Brasileira de Papel \| Domestic (Brazil)
Disclosure of joint ventures [line items]
Equity	377,992	377,992
Income (expenses) of the period	7,117
F&E Technologies LLC \| Foreign
Disclosure of joint ventures [line items]
Equity	11,829	11,829
Income (expenses) of the period
Woodspin Oy \| Foreign
Disclosure of joint ventures [line items]
Equity	226,731	226,731
Income (expenses) of the period	(13,855)
Simplifyber, Inc (Indirect)
Disclosure of joint ventures [line items]
Equity
Income (expenses) of the period

Property, plant and equipment - Summary (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	R$ 64,986,040	R$ 59,289,069
Additions	1,231,900	7,936,068
Acquisitions through business combinations, property, plant and equipment		1,702,768
Write-offs	(15,548)	(146,002)
Depreciation	(1,197,348)	(3,803,941)
Transfers and other	612	8,078
Ending balance	65,005,656	64,986,040
Land
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	16,775,348	14,859,189
Additions	3,211	697
Acquisitions through business combinations, property, plant and equipment		1,699,588
Write-offs		(10,724)
Depreciation
Transfers and other	1,351	226,598
Ending balance	R$ 16,779,910	16,775,348
Buildings
Disclosure of detailed information about property, plant and equipment [line items]
Average rate %	3.17%
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	R$ 9,522,593	5,906,494
Additions	7	558
Acquisitions through business combinations, property, plant and equipment		775
Write-offs	(799)	(7,455)
Depreciation	(104,786)	(366,398)
Transfers and other	434,293	3,988,619
Ending balance	R$ 9,851,308	9,522,593
Machinery, equipment and facilities
Disclosure of detailed information about property, plant and equipment [line items]
Average rate %	7.29%
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	R$ 34,280,498	20,537,952
Additions	100,643	415,147
Acquisitions through business combinations, property, plant and equipment		413
Write-offs	(12,247)	(118,499)
Depreciation	(1,020,232)	(3,214,550)
Transfers and other	674,587	16,660,035
Ending balance	34,023,249	34,280,498
Work in progress
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	3,510,535	17,485,109
Additions	1,121,983	7,490,762
Acquisitions through business combinations, property, plant and equipment
Write-offs
Depreciation
Transfers and other	(1,171,314)	(21,465,336)
Ending balance	R$ 3,461,204	3,510,535
Other
Disclosure of detailed information about property, plant and equipment [line items]
Average rate %	19.89%
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	R$ 897,066	500,325
Additions	6,056	28,904
Acquisitions through business combinations, property, plant and equipment		1,992
Write-offs	(2,502)	(9,324)
Depreciation	(72,330)	(222,993)
Transfers and other	61,695	598,162
Ending balance	889,985	897,066
Accumulated cost
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	98,731,202	92,324,815
Ending balance	99,899,093	98,731,202
Accumulated cost \| Land
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	16,775,348	14,859,189
Ending balance	16,779,910	16,775,348
Accumulated cost \| Buildings
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	13,816,631	10,032,317
Ending balance	14,249,711	13,816,631
Accumulated cost \| Machinery, equipment and facilities
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	62,822,096	48,456,537
Ending balance	63,547,914	62,822,096
Accumulated cost \| Work in progress
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	3,510,535	17,485,109
Ending balance	3,461,204	3,510,535
Accumulated cost \| Other
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	1,806,592	1,491,663
Ending balance	1,860,354	1,806,592
Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	(33,745,162)	(33,035,746)
Ending balance	(34,893,437)	(33,745,162)
Accumulated depreciation \| Land
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance
Ending balance
Accumulated depreciation \| Buildings
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	(4,294,038)	(4,125,823)
Ending balance	(4,398,403)	(4,294,038)
Accumulated depreciation \| Machinery, equipment and facilities
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	(28,541,598)	(27,918,585)
Ending balance	(29,524,665)	(28,541,598)
Accumulated depreciation \| Work in progress
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance
Ending balance
Accumulated depreciation \| Other
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance	(909,526)	(991,338)
Ending balance	R$ (970,369)	R$ (909,526)

Property, plant and equipment - Items pledged as collateral (Details) - BRL (R$)
R$ in Thousands

3 Months Ended

Mar. 31, 2025

Dec. 31, 2024

Disclosure of detailed information about property, plant and equipment [abstract]

Disclosure of Property, Plant and Equipment Pledged as Collateral [Table]


	Type of collateral	3/31/2025	12/31/2024
Land	Financial/Legal	24,427	24,427
Buildings	Financial	1,757,860	1,755,082
Machinery, equipment and facilities	Financial	20,158,141	20,442,189
Work in progress	Financial	413,767	427,998
Other	Financial	39,826	43,487
		22,394,021	22,693,183

Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]

Property, plant and equipment, pledged as security

R$ 22,394,021

R$ 22,693,183

Land

Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]

Property, plant and equipment, pledged as security

24,427

Buildings

Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]

Property, plant and equipment, pledged as security

1,757,860

1,755,082

Machinery, equipment and facilities

Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]

Property, plant and equipment, pledged as security

20,158,141

20,442,189

Work in progress

Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]

Property, plant and equipment, pledged as security

413,767

427,998

Other

Disclosure of Property, Plant and Equipment Pledged as Collateral [Line Items]

Property, plant and equipment, pledged as security

R$ 39,826

R$ 43,487

Property, plant and equipment - Capitalized Expenses (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disclosure of detailed information about property, plant and equipment [abstract]
Property, Plant and Equipment, Interest Costs Capitalised	R$ 52,753	R$ 959,967
Average Capitalisation Rate Per Month, Property, Plant and Equipment	12.10%	11.17%

Property, plant and equipment - Asset Retirement Obligation (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about financial instruments [abstract]
Asset Retirement Obligation	R$ 66,445,000	R$ 65,327,000

INTANGIBLE - Goodwill and intangible assets with indefinite useful life (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about intangible assets [line items]
Intangible Assets and Goodwill with Indefinite Useful Life	R$ 8,192,339	R$ 8,192,339
Goodwill - Facepa
Disclosure of detailed information about intangible assets [line items]
Intangible Assets and Goodwill with Indefinite Useful Life	119,332	119,332
Fibria
Disclosure of detailed information about intangible assets [line items]
Intangible Assets and Goodwill with Indefinite Useful Life	7,897,051	7,897,051
Goodwill - MMC Brasil
Disclosure of detailed information about intangible assets [line items]
Intangible Assets and Goodwill with Indefinite Useful Life	170,859	170,859
Other (1)
Disclosure of detailed information about intangible assets [line items]
Intangible Assets and Goodwill with Indefinite Useful Life	R$ 5,097	R$ 5,097

INTANGIBLE - Changes in intangible assets with determined useful life (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 5,709,964	R$ 6,557,009
Additions	11,836	161,779
Amortization	250,523	1,008,824
Closing Balance	5,471,277	5,709,964
Cost
Changes in intangible assets other than goodwill [abstract]
Opening Balance	12,540,497
Closing Balance	12,552,386	12,540,497
Amortization
Changes in intangible assets other than goodwill [abstract]
Opening Balance	(6,830,533)
Closing Balance	R$ (7,081,109)	(6,830,533)
Non-competition agreements
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	5.00%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 4,508
Closing Balance	R$ 4,430	4,508
Port concessions
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	3.94%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 632,253
Closing Balance	R$ 644,282	632,253
Supplier agreements
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	12.66%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 25,925
Closing Balance	R$ 22,221	25,925
Port service contracts
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	4.23%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 520,459
Closing Balance	R$ 513,119	520,459
Cultivars
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	14.28%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 20,391
Closing Balance	R$ 15,293	20,391
Trademarks and patents
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	8.35%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 170,306
Closing Balance	R$ 166,419	170,306
Customer portfolio
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	9.09%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 4,104,900
Closing Balance	R$ 3,899,654	4,104,900
Supplier agreements
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	17.64%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 295
Closing Balance	R$ 232	295
Software
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	20.80%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 201,476
Closing Balance	R$ 193,822	201,476
Other
Disclosure of detailed information about intangible assets [table]
Amortisation rate, intangible assets other than goodwill	10.00%
Changes in intangible assets other than goodwill [abstract]
Opening Balance	R$ 29,451
Closing Balance	R$ 11,805	R$ 29,451

Trade accounts payable (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Trade accounts payable [Line Items]
Trade accounts payable	R$ 5,669,809	R$ 6,033,285
Total trade accounts payable
Trade accounts payable [Line Items]
Trade accounts payable	5,669,809	6,033,285
Foreign \| Third party
Trade accounts payable [Line Items]
Trade accounts payable	1,527,479	1,350,763
Domestic (Brazil) \| Third party
Trade accounts payable [Line Items]
Trade accounts payable	4,139,345	4,681,065
Trade and Other Current Payables to Trade Suppliers, Amounts Subject to Factoring	429,166	555,063
Domestic (Brazil) \| Related party
Trade accounts payable [Line Items]
Trade accounts payable	R$ 2,985	R$ 1,457

Loans, financing and debentures - Breakdown by type (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Current
Loans, financing and debentures	R$ 3,428,610	R$ 10,501,387
Interest on financing	911,672	1,541,312
Non-current funding	2,516,938	8,960,075
Non-current
Loans, financing and debentures	87,613,961	90,934,144
Interest on financing
Non-current funding	87,613,961	90,934,144
Borrowings	91,042,571	101,435,531	R$ 77,172,692
Interest on financing	911,672	1,541,312
Non-current funding	90,130,899	99,894,219
2026
Non-current
Loans, financing and debentures	4,642,146
2027
Non-current
Loans, financing and debentures	9,214,872
2028
Non-current
Loans, financing and debentures	8,985,719
2029
Non-current
Loans, financing and debentures	17,455,730
Later than five years and not later than six years
Non-current
Loans, financing and debentures	12,941,881
Later than six years [Member]
Non-current
Loans, financing and debentures	34,369,387
Foreign countries
Current
Current	2,650,605	9,607,427
Non-current
Non-current	70,010,132	73,397,488
Total	72,660,737	83,004,915
Country of domicile
Current
Current	778,005	893,960
Non-current
Non-current	17,603,829	17,536,656
Total	18,381,834	18,430,616
Borrowings	91,042,571	101,435,531
Bonds \| Foreign countries
Non-current
Loans, financing and debentures	45,691,405
Bonds \| Foreign countries \| 2026
Non-current
Loans, financing and debentures	2,968,093
Bonds \| Foreign countries \| 2027
Non-current
Loans, financing and debentures	4,011,716
Bonds \| Foreign countries \| 2028
Non-current
Loans, financing and debentures	2,852,225
Bonds \| Foreign countries \| 2029
Non-current
Loans, financing and debentures	10,018,435
Bonds \| Foreign countries \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	5,660,739
Bonds \| Foreign countries \| Later than six years [Member]
Non-current
Loans, financing and debentures	R$ 20,180,197
Bonds \| Foreign countries \| Fixed
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	5.00%
Current
Current	R$ 368,085	3,229,641
Non-current
Non-current	45,691,405	49,166,804
Total	46,059,490	52,396,445
Panda Bonds (1) \| Foreign countries
Non-current
Loans, financing and debentures	948,655
Panda Bonds (1) \| Foreign countries \| 2026
Non-current
Loans, financing and debentures
Panda Bonds (1) \| Foreign countries \| 2027
Non-current
Loans, financing and debentures	948,655
Panda Bonds (1) \| Foreign countries \| 2028
Non-current
Loans, financing and debentures
Panda Bonds (1) \| Foreign countries \| 2029
Non-current
Loans, financing and debentures
Panda Bonds (1) \| Foreign countries \| Later than five years and not later than six years
Non-current
Loans, financing and debentures
Panda Bonds (1) \| Foreign countries \| Later than six years [Member]
Non-current
Loans, financing and debentures
Panda Bonds (1) \| Foreign countries \| Fixed
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	2.80%
Current
Current	R$ 9,581
Non-current
Non-current	948,655
Total	958,236
Export credits (“export prepayments”) \| Foreign countries
Non-current
Loans, financing and debentures	16,983,690
Export credits (“export prepayments”) \| Foreign countries \| 2026
Non-current
Loans, financing and debentures	1,224,473
Export credits (“export prepayments”) \| Foreign countries \| 2027
Non-current
Loans, financing and debentures	3,594,061
Export credits (“export prepayments”) \| Foreign countries \| 2028
Non-current
Loans, financing and debentures	3,583,133
Export credits (“export prepayments”) \| Foreign countries \| 2029
Non-current
Loans, financing and debentures	4,807,933
Export credits (“export prepayments”) \| Foreign countries \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	3,062,507
Export credits (“export prepayments”) \| Foreign countries \| Later than six years [Member]
Non-current
Loans, financing and debentures	R$ 711,583
Export credits (“export prepayments”) \| Foreign countries \| SOFR/Fixed
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	5.40%
Current
Current	R$ 2,153,304	6,236,806
Non-current
Non-current	16,983,690	16,283,736
Total	19,136,994	22,520,542
Assets Financing \| Foreign countries
Non-current
Loans, financing and debentures	269,563
Assets Financing \| Foreign countries \| 2026
Non-current
Loans, financing and debentures	83,169
Assets Financing \| Foreign countries \| 2027
Non-current
Loans, financing and debentures	111,553
Assets Financing \| Foreign countries \| 2028
Non-current
Loans, financing and debentures	68,475
Assets Financing \| Foreign countries \| 2029
Non-current
Loans, financing and debentures	6,366
Assets Financing \| Foreign countries \| Later than five years and not later than six years
Non-current
Loans, financing and debentures
Assets Financing \| Foreign countries \| Later than six years [Member]
Non-current
Loans, financing and debentures
Assets Financing \| Foreign countries \| SOFR
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	3.30%
Current
Current	R$ 6,479	137,300
Non-current
Non-current	713,766	298,252
Total	720,245	435,552
Assets Financing \| Country of domicile
Non-current
Loans, financing and debentures	52,307
Assets Financing \| Country of domicile \| 2026
Non-current
Loans, financing and debentures	14,092
Assets Financing \| Country of domicile \| 2027
Non-current
Loans, financing and debentures	19,114
Assets Financing \| Country of domicile \| 2028
Non-current
Loans, financing and debentures	19,034
Assets Financing \| Country of domicile \| 2029
Non-current
Loans, financing and debentures	67
Assets Financing \| Country of domicile \| Later than five years and not later than six years
Non-current
Loans, financing and debentures
Assets Financing \| Country of domicile \| Later than six years [Member]
Non-current
Loans, financing and debentures
Assets Financing \| Country of domicile \| CDI
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	17.00%
Current
Current	R$ 18,514	18,427
Non-current
Non-current	52,307	56,956
Total	70,821	75,383
ECA - Export Credit Agency \| Foreign countries
Non-current
Loans, financing and debentures	713,766
ECA - Export Credit Agency \| Foreign countries \| 2026
Non-current
Loans, financing and debentures
ECA - Export Credit Agency \| Foreign countries \| 2027
Non-current
Loans, financing and debentures
ECA - Export Credit Agency \| Foreign countries \| 2028
Non-current
Loans, financing and debentures
ECA - Export Credit Agency \| Foreign countries \| 2029
Non-current
Loans, financing and debentures
ECA - Export Credit Agency \| Foreign countries \| Later than five years and not later than six years
Non-current
Loans, financing and debentures
ECA - Export Credit Agency \| Foreign countries \| Later than six years [Member]
Non-current
Loans, financing and debentures	R$ 713,766
ECA - Export Credit Agency \| Foreign countries \| SOFR
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	5.80%
Current
Current	R$ 108,292	7,297
Non-current
Non-current	269,563	769,702
Total	377,855	776,999
IFC - International Finance Corporation \| Foreign countries
Non-current
Loans, financing and debentures	5,398,827
IFC - International Finance Corporation \| Foreign countries \| 2027
Non-current
Loans, financing and debentures	290,300
IFC - International Finance Corporation \| Foreign countries \| 2028
Non-current
Loans, financing and debentures	1,477,021
IFC - International Finance Corporation \| Foreign countries \| 2029
Non-current
Loans, financing and debentures	2,400,463
IFC - International Finance Corporation \| Foreign countries \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	R$ 1,231,043
IFC - International Finance Corporation \| Foreign countries \| SOFR
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	5.60%
Current
Current	R$ (3,046)	(12,051)
Non-current
Non-current	5,398,827	5,858,208
Total	R$ 5,395,781	5,846,157
Others \| Foreign countries \| Fixed
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate
Current
Current	R$ 7,910	4,210
Non-current
Non-current	4,226	4,455
Total	R$ 12,136	8,665
BNDES - UMBNDES \| Country of domicile \| BNDES - UMBNDES
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	6.80%
Current
Current	R$ 417
Non-current
Non-current	157,555
Loans, financing and debentures	157,555
Total	157,972
BNDES - UMBNDES \| Country of domicile \| BNDES - UMBNDES \| 2026
Non-current
Loans, financing and debentures	4,258
BNDES - UMBNDES \| Country of domicile \| BNDES - UMBNDES \| 2027
Non-current
Loans, financing and debentures	8,516
BNDES - UMBNDES \| Country of domicile \| BNDES - UMBNDES \| 2028
Non-current
Loans, financing and debentures	8,516
BNDES - UMBNDES \| Country of domicile \| BNDES - UMBNDES \| 2029
Non-current
Loans, financing and debentures	8,516
BNDES - UMBNDES \| Country of domicile \| BNDES - UMBNDES \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	8,516
BNDES - UMBNDES \| Country of domicile \| BNDES - UMBNDES \| Later than six years [Member]
Non-current
Loans, financing and debentures	R$ 119,233
BNDES – TJLP [Member] \| Country of domicile \| BNDES – TJLP
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	8.70%
Current
Current	R$ 98,893	100,556
Non-current
Non-current	76,811	101,587
Loans, financing and debentures	76,811
Total	175,704	202,143
BNDES – TJLP [Member] \| Country of domicile \| BNDES – TJLP \| 2026
Non-current
Loans, financing and debentures	65,250
BNDES – TJLP [Member] \| Country of domicile \| BNDES – TJLP \| 2027
Non-current
Loans, financing and debentures	3,651
BNDES – TJLP [Member] \| Country of domicile \| BNDES – TJLP \| 2028
Non-current
Loans, financing and debentures	3,651
BNDES – TJLP [Member] \| Country of domicile \| BNDES – TJLP \| 2029
Non-current
Loans, financing and debentures	3,651
BNDES – TJLP [Member] \| Country of domicile \| BNDES – TJLP \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	608
BNDES – TJLP [Member] \| Country of domicile \| BNDES – TJLP \| Later than six years [Member]
Non-current
Loans, financing and debentures
BNDES – TLP [Member] \| Country of domicile \| BNDES – TLP
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	14.50%
Current
Current	R$ 99,780	94,903
Non-current
Non-current	4,665,467	4,607,102
Loans, financing and debentures	4,665,467
Total	4,765,247	4,702,005
BNDES – TLP [Member] \| Country of domicile \| BNDES – TLP \| 2026
Non-current
Loans, financing and debentures	80,906
BNDES – TLP [Member] \| Country of domicile \| BNDES – TLP \| 2027
Non-current
Loans, financing and debentures	161,927
BNDES – TLP [Member] \| Country of domicile \| BNDES – TLP \| 2028
Non-current
Loans, financing and debentures	159,092
BNDES – TLP [Member] \| Country of domicile \| BNDES – TLP \| 2029
Non-current
Loans, financing and debentures	144,920
BNDES – TLP [Member] \| Country of domicile \| BNDES – TLP \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	372,599
BNDES – TLP [Member] \| Country of domicile \| BNDES – TLP \| Later than six years [Member]
Non-current
Loans, financing and debentures	R$ 3,746,023
BNDES – SELIC [Member] \| Country of domicile \| BNDES – SELIC
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	17.40%
Current
Current	R$ 251,304	243,223
Non-current
Non-current	663,562	704,825
Loans, financing and debentures	663,562
Total	914,866	948,048
BNDES – SELIC [Member] \| Country of domicile \| BNDES – SELIC \| 2026
Non-current
Loans, financing and debentures	198,744
BNDES – SELIC [Member] \| Country of domicile \| BNDES – SELIC \| 2027
Non-current
Loans, financing and debentures	35,645
BNDES – SELIC [Member] \| Country of domicile \| BNDES – SELIC \| 2028
Non-current
Loans, financing and debentures	35,645
BNDES – SELIC [Member] \| Country of domicile \| BNDES – SELIC \| 2029
Non-current
Loans, financing and debentures	35,645
BNDES – SELIC [Member] \| Country of domicile \| BNDES – SELIC \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	35,645
BNDES – SELIC [Member] \| Country of domicile \| BNDES – SELIC \| Later than six years [Member]
Non-current
Loans, financing and debentures	R$ 322,238
BNDES – TR \| Country of domicile \| BNDES – TR
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	2.20%
Current
Current	R$ 1,110
Non-current
Non-current	68,998
Loans, financing and debentures	68,998
Total	70,108
BNDES – TR \| Country of domicile \| BNDES – TR \| 2026
Non-current
Loans, financing and debentures	3,161
BNDES – TR \| Country of domicile \| BNDES – TR \| 2027
Non-current
Loans, financing and debentures	4,734
BNDES – TR \| Country of domicile \| BNDES – TR \| 2028
Non-current
Loans, financing and debentures	4,734
BNDES – TR \| Country of domicile \| BNDES – TR \| 2029
Non-current
Loans, financing and debentures	4,734
BNDES – TR \| Country of domicile \| BNDES – TR \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	4,734
BNDES – TR \| Country of domicile \| BNDES – TR \| Later than six years [Member]
Non-current
Loans, financing and debentures	46,901
NCE ("Export Credit Notes") \| Country of domicile
Non-current
Loans, financing and debentures	100,000
NCE ("Export Credit Notes") \| Country of domicile \| 2026
Non-current
Loans, financing and debentures
NCE ("Export Credit Notes") \| Country of domicile \| 2027
Non-current
Loans, financing and debentures	25,000
NCE ("Export Credit Notes") \| Country of domicile \| 2028
Non-current
Loans, financing and debentures	25,000
NCE ("Export Credit Notes") \| Country of domicile \| 2029
Non-current
Loans, financing and debentures	25,000
NCE ("Export Credit Notes") \| Country of domicile \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	25,000
NCE ("Export Credit Notes") \| Country of domicile \| Later than six years [Member]
Non-current
Loans, financing and debentures
NCE ("Export Credit Notes") \| Country of domicile \| CDI
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	17.60%
Current
Current	R$ 3,486	3,027
Non-current
Non-current	100,000	100,000
Total	103,486	103,027
NCR ("Rural producer certificate") \| Country of domicile
Non-current
Loans, financing and debentures	2,000,000
NCR ("Rural producer certificate") \| Country of domicile \| 2026
Non-current
Loans, financing and debentures
NCR ("Rural producer certificate") \| Country of domicile \| 2027
Non-current
Loans, financing and debentures
NCR ("Rural producer certificate") \| Country of domicile \| 2028
Non-current
Loans, financing and debentures
NCR ("Rural producer certificate") \| Country of domicile \| 2029
Non-current
Loans, financing and debentures
NCR ("Rural producer certificate") \| Country of domicile \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	2,000,000
NCR ("Rural producer certificate") \| Country of domicile \| Later than six years [Member]
Non-current
Loans, financing and debentures
NCR ("Rural producer certificate") \| Country of domicile \| CDI
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	14.80%
Current
Current	R$ 39,854	312,652
Non-current
Non-current	2,000,000	2,000,000
Total	2,039,854	2,312,652
Debentures \| Country of domicile
Non-current
Loans, financing and debentures	9,819,129
Debentures \| Country of domicile \| 2026
Non-current
Loans, financing and debentures
Debentures \| Country of domicile \| 2027
Non-current
Loans, financing and debentures
Debentures \| Country of domicile \| 2028
Non-current
Loans, financing and debentures	749,193
Debentures \| Country of domicile \| 2029
Non-current
Loans, financing and debentures
Debentures \| Country of domicile \| Later than five years and not later than six years
Non-current
Loans, financing and debentures	540,490
Debentures \| Country of domicile \| Later than six years [Member]
Non-current
Loans, financing and debentures	R$ 8,529,446
Debentures \| Country of domicile \| CDI/IPCA
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	15.20%
Current
Current	R$ 264,647	120,931
Non-current
Non-current	9,819,129	9,738,616
Total	10,083,776	R$ 9,859,547
Breakdown by maturity - non-current
Non-current
Loans, financing and debentures	R$ 87,609,735

Loans, financing and debentures - Breakdown by maturity – non-current (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	R$ (87,613,961)	R$ (90,934,144)
2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,642,146)
2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(9,214,872)
2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(8,985,719)
2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(17,455,730)
Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(12,941,881)
Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(34,369,387)
Bonds \| Foreign countries
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(45,691,405)
Bonds \| Foreign countries \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(2,968,093)
Bonds \| Foreign countries \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,011,716)
Bonds \| Foreign countries \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(2,852,225)
Bonds \| Foreign countries \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(10,018,435)
Bonds \| Foreign countries \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(5,660,739)
Bonds \| Foreign countries \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(20,180,197)
Panda Bonds (1) \| Foreign countries
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(948,655)
Panda Bonds (1) \| Foreign countries \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Panda Bonds (1) \| Foreign countries \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(948,655)
Panda Bonds (1) \| Foreign countries \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Panda Bonds (1) \| Foreign countries \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Panda Bonds (1) \| Foreign countries \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Panda Bonds (1) \| Foreign countries \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Export credits (“export prepayments”) \| Foreign countries
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(16,983,690)
Export credits (“export prepayments”) \| Foreign countries \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(1,224,473)
Export credits (“export prepayments”) \| Foreign countries \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(3,594,061)
Export credits (“export prepayments”) \| Foreign countries \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(3,583,133)
Export credits (“export prepayments”) \| Foreign countries \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,807,933)
Export credits (“export prepayments”) \| Foreign countries \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(3,062,507)
Export credits (“export prepayments”) \| Foreign countries \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(711,583)
Assets Financing \| Foreign countries
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(269,563)
Assets Financing \| Foreign countries \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(83,169)
Assets Financing \| Foreign countries \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(111,553)
Assets Financing \| Foreign countries \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(68,475)
Assets Financing \| Foreign countries \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(6,366)
Assets Financing \| Foreign countries \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Assets Financing \| Foreign countries \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Assets Financing \| Country of domicile
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(52,307)
Assets Financing \| Country of domicile \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(14,092)
Assets Financing \| Country of domicile \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(19,114)
Assets Financing \| Country of domicile \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(19,034)
Assets Financing \| Country of domicile \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(67)
Assets Financing \| Country of domicile \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Assets Financing \| Country of domicile \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
ECA - Export Credit Agency \| Foreign countries
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(713,766)
ECA - Export Credit Agency \| Foreign countries \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
ECA - Export Credit Agency \| Foreign countries \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
ECA - Export Credit Agency \| Foreign countries \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
ECA - Export Credit Agency \| Foreign countries \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
ECA - Export Credit Agency \| Foreign countries \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
ECA - Export Credit Agency \| Foreign countries \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(713,766)
IFC - International Finance Corporation \| Foreign countries
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(5,398,827)
IFC - International Finance Corporation \| Foreign countries \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(290,300)
IFC - International Finance Corporation \| Foreign countries \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(1,477,021)
IFC - International Finance Corporation \| Foreign countries \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(2,400,463)
IFC - International Finance Corporation \| Foreign countries \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(1,231,043)
BNDES – TJLP [Member] \| Country of domicile \| BNDES – TJLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(76,811)
BNDES – TJLP [Member] \| Country of domicile \| 2026 \| BNDES – TJLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(65,250)
BNDES – TJLP [Member] \| Country of domicile \| 2027 \| BNDES – TJLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(3,651)
BNDES – TJLP [Member] \| Country of domicile \| 2028 \| BNDES – TJLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(3,651)
BNDES – TJLP [Member] \| Country of domicile \| 2029 \| BNDES – TJLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(3,651)
BNDES – TJLP [Member] \| Country of domicile \| Later than five years and not later than six years \| BNDES – TJLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(608)
BNDES – TJLP [Member] \| Country of domicile \| Later than six years [Member] \| BNDES – TJLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
BNDES – TLP [Member] \| Country of domicile \| BNDES – TLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,665,467)
BNDES – TLP [Member] \| Country of domicile \| 2026 \| BNDES – TLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(80,906)
BNDES – TLP [Member] \| Country of domicile \| 2027 \| BNDES – TLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(161,927)
BNDES – TLP [Member] \| Country of domicile \| 2028 \| BNDES – TLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(159,092)
BNDES – TLP [Member] \| Country of domicile \| 2029 \| BNDES – TLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(144,920)
BNDES – TLP [Member] \| Country of domicile \| Later than five years and not later than six years \| BNDES – TLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(372,599)
BNDES – TLP [Member] \| Country of domicile \| Later than six years [Member] \| BNDES – TLP
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(3,746,023)
BNDES – SELIC [Member] \| Country of domicile \| BNDES – SELIC
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(663,562)
BNDES – SELIC [Member] \| Country of domicile \| 2026 \| BNDES – SELIC
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(198,744)
BNDES – SELIC [Member] \| Country of domicile \| 2027 \| BNDES – SELIC
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(35,645)
BNDES – SELIC [Member] \| Country of domicile \| 2028 \| BNDES – SELIC
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(35,645)
BNDES – SELIC [Member] \| Country of domicile \| 2029 \| BNDES – SELIC
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(35,645)
BNDES – SELIC [Member] \| Country of domicile \| Later than five years and not later than six years \| BNDES – SELIC
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(35,645)
BNDES – SELIC [Member] \| Country of domicile \| Later than six years [Member] \| BNDES – SELIC
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(322,238)
BNDES – TR \| Country of domicile \| BNDES – TR
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(68,998)
BNDES – TR \| Country of domicile \| 2026 \| BNDES – TR
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(3,161)
BNDES – TR \| Country of domicile \| 2027 \| BNDES – TR
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,734)
BNDES – TR \| Country of domicile \| 2028 \| BNDES – TR
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,734)
BNDES – TR \| Country of domicile \| 2029 \| BNDES – TR
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,734)
BNDES – TR \| Country of domicile \| Later than five years and not later than six years \| BNDES – TR
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,734)
BNDES – TR \| Country of domicile \| Later than six years [Member] \| BNDES – TR
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(46,901)
BNDES - UMBNDES \| Country of domicile \| BNDES - UMBNDES
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(157,555)
BNDES - UMBNDES \| Country of domicile \| 2026 \| BNDES - UMBNDES
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,258)
BNDES - UMBNDES \| Country of domicile \| 2027 \| BNDES - UMBNDES
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(8,516)
BNDES - UMBNDES \| Country of domicile \| 2028 \| BNDES - UMBNDES
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(8,516)
BNDES - UMBNDES \| Country of domicile \| 2029 \| BNDES - UMBNDES
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(8,516)
BNDES - UMBNDES \| Country of domicile \| Later than five years and not later than six years \| BNDES - UMBNDES
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(8,516)
BNDES - UMBNDES \| Country of domicile \| Later than six years [Member] \| BNDES - UMBNDES
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(119,233)
NCE ("Export Credit Notes") \| Country of domicile
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(100,000)
NCE ("Export Credit Notes") \| Country of domicile \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
NCE ("Export Credit Notes") \| Country of domicile \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(25,000)
NCE ("Export Credit Notes") \| Country of domicile \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(25,000)
NCE ("Export Credit Notes") \| Country of domicile \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(25,000)
NCE ("Export Credit Notes") \| Country of domicile \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(25,000)
NCE ("Export Credit Notes") \| Country of domicile \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
NCR ("Rural producer certificate") \| Country of domicile
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(2,000,000)
NCR ("Rural producer certificate") \| Country of domicile \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
NCR ("Rural producer certificate") \| Country of domicile \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
NCR ("Rural producer certificate") \| Country of domicile \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
NCR ("Rural producer certificate") \| Country of domicile \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
NCR ("Rural producer certificate") \| Country of domicile \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(2,000,000)
NCR ("Rural producer certificate") \| Country of domicile \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Debentures \| Country of domicile
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(9,819,129)
Debentures \| Country of domicile \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Debentures \| Country of domicile \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Debentures \| Country of domicile \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(749,193)
Debentures \| Country of domicile \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings
Debentures \| Country of domicile \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(540,490)
Debentures \| Country of domicile \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(8,529,446)
Total in foreign currency [Member] \| Foreign countries
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(70,005,906)
Total in foreign currency [Member] \| Foreign countries \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(4,275,735)
Total in foreign currency [Member] \| Foreign countries \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(8,956,285)
Total in foreign currency [Member] \| Foreign countries \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(7,980,854)
Total in foreign currency [Member] \| Foreign countries \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(17,233,197)
Total in foreign currency [Member] \| Foreign countries \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(9,954,289)
Total in foreign currency [Member] \| Foreign countries \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(21,605,546)
Total in local currency [Member] \| Country of domicile
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(17,603,829)
Total in local currency [Member] \| Country of domicile \| 2026
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(366,411)
Total in local currency [Member] \| Country of domicile \| 2027
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(258,587)
Total in local currency [Member] \| Country of domicile \| 2028
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(1,004,865)
Total in local currency [Member] \| Country of domicile \| 2029
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(222,533)
Total in local currency [Member] \| Country of domicile \| Later than five years and not later than six years
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	(2,987,592)
Total in local currency [Member] \| Country of domicile \| Later than six years [Member]
Disclosure of detailed information about borrowings [line items]
Non-current portion of non-current borrowings	R$ (12,763,841)

Loans, financing and debentures - Roll-forward of loans, financing and debentures (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about borrowings [abstract]
Opening balance	R$ 101,435,531	R$ 77,172,692
Fundraising, net of issuance costs	7,055,244	15,692,905
Interest accrued	1,412,878	5,413,707
Monetary and exchange rate variation, net	(5,702,984)	17,728,324
Settlement of principal	(11,175,521)	(9,410,807)
Settlement of interest	(2,014,500)	(5,241,389)
Amortization of fundraising costs	31,923	80,099
Closing balance	R$ 91,042,571	R$ 101,435,531

Loans, financing and debentures - Fundraising cost (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Total
Disclosure of detailed information about borrowings [line items]
Cost	R$ 1,053,232
Amortization	587,776
Balance to be amortized	465,456	R$ 468,488
Bonds
Disclosure of detailed information about borrowings [line items]
Cost	434,970
Amortization	286,460
Balance to be amortized	148,510	168,450
CRA and NCE
Disclosure of detailed information about borrowings [line items]
Cost
Amortization
Balance to be amortized
Export credits (“export prepayments”)
Disclosure of detailed information about borrowings [line items]
Cost	273,989
Amortization	181,400
Balance to be amortized	92,589	63,080
Debentures
Disclosure of detailed information about borrowings [line items]
Cost	159,675
Amortization	35,813
Balance to be amortized	123,862	125,663
BNDES
Disclosure of detailed information about borrowings [line items]
Cost	81,730
Amortization	56,686
Balance to be amortized	25,044	25,777
IFC - International Finance Corporation
Disclosure of detailed information about borrowings [line items]
Cost	81,956
Amortization	12,533
Balance to be amortized	69,423	78,719
Others
Disclosure of detailed information about borrowings [line items]
Cost	20,912
Amortization	14,884
Balance to be amortized	R$ 6,028	R$ 6,799

Loans, financing and debentures - Relevant transactions entered into during the period (Details) $ in Thousands	Mar. 10, 2025 USD ($)	Mar. 10, 2025 BRL (R$)	Mar. 05, 2025 USD ($)	Mar. 05, 2025 BRL (R$)	Jan. 22, 2025 USD ($)	Jan. 22, 2025 BRL (R$)
Export Prepayment Agreements ("EPP") \| March 2031
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings, classified as financing activities	$ 1,200,000	R$ 6,951,600
Advance of exchange contract (ACC) \| January 2026
Disclosure of detailed information about borrowings [line items]
Current borrowings					$ 10	R$ 59,175
SOFR \| Advance of exchange contract (ACC) \| January 2026
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate					6.43%	6.43%
SOFR Term +1.45% \| March 2031
Disclosure of detailed information about borrowings [line items]
Floating rate increasing annually until maturity	1.45%	1.45%
ACC with Banco Do Brasil \| Advance of exchange contract (ACC) \| March 2026
Disclosure of detailed information about borrowings [line items]
Current borrowings			$ 10	R$ 57,950
ACC with Banco Do Brasil \| Fixed \| Advance of exchange contract (ACC) \| March 2026
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate			5.80%	5.80%

Loans, financing and debentures - Significant transactions settled during the period (Details)	Mar. 24, 2025 BRL (R$)	Mar. 10, 2025 USD ($)	Mar. 10, 2025 BRL (R$)	Jan. 14, 2025 USD ($)	Jan. 14, 2025 BRL (R$)
Several banks (a syndicated operation) [Member] \| March 2027
Disclosure of detailed information about borrowings [line items]
Notional value		$ 1,486,064	R$ 8,608,769
Several banks (a syndicated operation) [Member] \| SOFR \| March 2027
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis		1.40%	1.40%
Bonds \| Bond Maturity Date
Disclosure of detailed information about borrowings [line items]
Notional value				$ 346,445	R$ 2,101,917
Bonds \| Interest rate \| Bond Maturity Date
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis				4.00%	4.00%
Rural Producer Note (CPR) \| March 2025 [Member]
Disclosure of detailed information about borrowings [line items]
Notional value	R$ 221,942
Rural Producer Note (CPR) \| CDI \| March 2025 [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis	100.00%

LEASES - Right of use assets (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Disclosure of quantitative information about right-of-use assets [line items]
Beginning Balance	R$ 5,180,691	R$ 5,196,631
Additions/updates	266,717	744,226
Depreciation (1)	(197,807)	(757,064)
Right-of-Use Assets, Write-Offs		(3,102)
Ending Balance	5,249,601	5,180,691
Lands
Disclosure of quantitative information about right-of-use assets [line items]
Beginning Balance	3,475,569	3,380,298
Additions/updates	229,525	506,373
Depreciation (1)	(108,410)	(408,000)
Right-of-Use Assets, Write-Offs		(3,102)
Ending Balance	3,596,684	3,475,569
Machinery and equipment
Disclosure of quantitative information about right-of-use assets [line items]
Beginning Balance	175,043	184,813
Additions/updates	11,502	157,542
Depreciation (1)	(40,571)	(167,312)
Ending Balance	145,974	175,043
Buildings
Disclosure of quantitative information about right-of-use assets [line items]
Beginning Balance	114,392	127,432
Additions/updates	25,690	41,235
Depreciation (1)	(13,238)	(54,275)
Ending Balance	126,844	114,392
Ships and boats
Disclosure of quantitative information about right-of-use assets [line items]
Beginning Balance	1,373,338	1,498,228
Additions/updates
Depreciation (1)	(31,223)	(124,890)
Ending Balance	1,342,115	1,373,338
Vehicles
Disclosure of quantitative information about right-of-use assets [line items]
Beginning Balance	42,349	5,860
Additions/updates		39,076
Depreciation (1)	(4,365)	(2,587)
Right-of-Use Assets, Write-Offs
Ending Balance	R$ 37,984	R$ 42,349

LEASES - Lease liabilities (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Lessee, Operating Leases, Present Value Of Lease Liabilities [Line Items]
Present value of liabilities	R$ 6,851,519	R$ 6,972,915	R$ 6,243,782
Lands and farms
Lessee, Operating Leases, Present Value Of Lease Liabilities [Line Items]
Average rate - % p.a. (1)	12.27%
Maturity (2)	May/2052
Present value of liabilities	R$ 4,041,182
Machinery and equipment
Lessee, Operating Leases, Present Value Of Lease Liabilities [Line Items]
Average rate - % p.a. (1)	11.19%
Maturity (2)	July/2032
Present value of liabilities	R$ 244,318
Buildings
Lessee, Operating Leases, Present Value Of Lease Liabilities [Line Items]
Average rate - % p.a. (1)	10.75%
Maturity (2)	March/2031
Present value of liabilities	R$ 125,318
Ships and boats
Lessee, Operating Leases, Present Value Of Lease Liabilities [Line Items]
Average rate - % p.a. (1)	11.25%
Maturity (2)	February/2039
Present value of liabilities	R$ 2,408,213
Vehicles
Lessee, Operating Leases, Present Value Of Lease Liabilities [Line Items]
Average rate - % p.a. (1)	11.10%
Maturity (2)	November/2028
Present value of liabilities	R$ 32,488

LEASES - Changes in lease liabilities (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Lessee, Operating Leases, Changes in Lease Libilities [Line Items]
Opening Balance	R$ 6,972,915	R$ 6,243,782
Additions	266,717	744,226
Write-offs (2)		(3,102)
Payments	(371,531)	(1,325,398)
Accrual of financial charges (1)	182,458	700,283
Exchange rate variations	(199,040)	613,124
Closing Balance	6,851,519	6,972,915
Current	870,322	872,228
Non-current	5,981,197	6,100,687
Leased Land \| Biological assets [domain]
Lessee, Operating Leases, Changes in Lease Libilities [Line Items]
Operating Leases, Capitalized Interest	R$ 66,200	R$ 223,055

LEASES - Amounts recognized in the statement of income for the year (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Presentation of leases for lessee [abstract]
Expenses relating to short-term assets	R$ 672	R$ 1,084
Expenses relating to low-value assets	18	424
Total	R$ 690	R$ 1,508

Provision for judicial liabilities - Roll-forward and changes in the provision for probable losses, net of judicial deposits (Details) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025 BRL (R$) item	Dec. 31, 2024 BRL (R$) item
Probable losses
Disclosure of other provisions [line items]
Balance provision at the beginning for the period	R$ 3,105,168	R$ 3,112,877
Payments	(87,908)	(156,097)
Reversal	(17,472)	(129,252)
Additions	44,754	239,750
Monetary adjustment	20,327	37,890
Provision Balance	3,064,869	3,105,168
Judicial deposits	(121,433)	(178,418)
Balance provision at the end for the period	2,943,436	2,926,750
Probable losses \| Taxes and social security (1)
Disclosure of other provisions [line items]
Balance provision at the beginning for the period	407,964	468,839
Payments	(58,974)	(60,081)
Reversal	(10,885)	(9,540)
Additions	2,038	4,689
Monetary adjustment	4,519	4,057
Provision Balance	344,662	407,964
Judicial deposits	(4,234)	(66,746)
Balance provision at the end for the period	340,428	341,218
Probable losses \| Labor
Disclosure of other provisions [line items]
Balance provision at the beginning for the period	353,926	349,058
Payments	(27,512)	(89,221)
Reversal	(4,884)	(89,941)
Additions	33,134	162,456
Monetary adjustment	6,362	21,574
Provision Balance	361,026	353,926
Judicial deposits	(95,578)	(91,596)
Balance provision at the end for the period	265,448	262,330
Probable losses \| Civil, environment and real estate
Disclosure of other provisions [line items]
Balance provision at the beginning for the period	215,553	139,435
Payments	(1,422)	(6,795)
Reversal		(1,951)
Additions	9,582	72,605
Monetary adjustment	9,446	12,259
Provision Balance	233,159	215,553
Judicial deposits	(21,621)	(20,076)
Balance provision at the end for the period	211,538	195,477
Probable losses \| Classes of contingent liabilities [domain]
Disclosure of other provisions [line items]
Balance provision at the beginning for the period	2,127,725	2,155,545
Payments
Reversal	(1,703)	(27,820)
Additions
Monetary adjustment
Provision Balance	2,126,022	2,127,725
Balance provision at the end for the period	R$ 2,126,022	R$ 2,127,725
Possible losses and remote losses \| Taxes and social security (1)
Disclosure of other provisions [line items]
Number of Administrative Proceedings and Lawsuits \| item	54	58
Possible losses and remote losses \| Labor
Disclosure of other provisions [line items]
Number of Lawsuits \| item	1,094	1,178
Possible losses and remote losses \| Civil, environment and real estate
Disclosure of other provisions [line items]
Number of Lawsuits \| item	101	97
Possible losses and remote losses \| Civil, environment and real estate \| Fibria
Disclosure of other provisions [line items]
Loss Contingency, Estimate of Possible Loss	R$ 133,281
Possible losses and remote losses \| Tax contingent liability [member] \| Fibria
Disclosure of other provisions [line items]
Loss Contingency, Estimate of Possible Loss	R$ 1,992,741

Provision for judicial liabilities - Contingencies with possible losses (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Fibria
Disclosure of other provisions [line items]
Fair Value Adjustment Of Probable Contingencies	R$ 2,106,933	R$ 2,135,869
Total
Disclosure of other provisions [line items]
Possible Losses for Which No Provision Was Recorded	11,137,276	15,074,276
Taxes and social security (1)
Disclosure of other provisions [line items]
Possible Losses for Which No Provision Was Recorded	9,942,885	9,837,082
Labor
Disclosure of other provisions [line items]
Possible Losses for Which No Provision Was Recorded	177,780	171,480
Civil and environmental (1) (2)
Disclosure of other provisions [line items]
Possible Losses for Which No Provision Was Recorded	R$ 1,016,611	R$ 5,065,714

Provision for judicial liabilities - Possible losses - Labor (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Labor
Disclosure of other provisions [line items]
Possible Losses for Which No Provision Was Recorded	R$ 177,780	R$ 171,480

Employee benefits plans - Disclosure of contributions by the company (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Suzano Prev
Employer Contributions [Line Items]
Employer contributions	R$ 5,745	R$ 5,111

Employee benefits plans - Roll-forward of actuarial liability (Details) - BRL (R$) R$ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Disclosure of defined benefit plans [line items]
Opening Balance	R$ 721,560	R$ 833,683
Interest on actuarial liabilities	19,337	73,853
Current service cost	485	1,997
Actuarial loss – experience		(125)
Actuarial loss (gain) – financial assumptions		(137,649)
Benefits paid directly by entity	(11,350)	(50,199)
Closing Balance	R$ 730,032	R$ 721,560

Share-based compensation plan - Phantom shares plan ("PS") and Restricted Shares (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2025 BRL (R$) shares R$ / shares shares	Dec. 31, 2024 BRL (R$) shares R$ / shares	Dec. 31, 2023 BRL (R$)
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based compensation plans \| R$	R$ 361,895,000	R$ 361,974,000
PSO
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of other equity instruments outstanding in share-based payment arrangement	10,394,130	10,096,497
Granted during of the year	2,010,686
Cancelled	257,914
Exercised (1)	1,455,139
Available for completion	439,037
Restricted stock, year one	2,304,845
Restricted stock, year two	2,996,742
Restricted stock, year three	2,793,916
Restricted stock, year four	1,859,590
Share-based compensation plans \| R$	R$ 361,895,000	R$ 361,974,000	R$ 268,489,000
Increase Provision Share Based Payment \| R$	83,198,000	173,486,000
Decrease Provision Share Based Payment \| R$	R$ (83,277,000)	R$ (80,001,000)
Phantom Share Units Psus
Disclosure of terms and conditions of share-based payment arrangement [line items]
Phantom Share Units Psus \| R$ / shares	R$ 60.25	R$ 42.36
Restricted share units
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of other equity instruments outstanding in share-based payment arrangement	3,224,364	2,980,111
Granted during of the year	363,811
Exercised (1)	119,558
Restricted stock, year one	348,417
Restricted stock, year two	504,946
Restricted stock, year three	431,331
Restricted stock, year four	150,604
Share-based compensation plans \| R$	R$ 64,827,000	R$ 60,226,000	R$ 26,744,000
Increase Provision Share Based Payment \| R$	11,038,000	81,276,000
Decrease Provision Share Based Payment \| R$	R$ (6,437,000)	(47,794,000)
Grant Year 2020 \| PSO
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 38.50
Number of other equity instruments outstanding in share-based payment arrangement	34,467	33,384
Granted during of the year	1,083
Available for completion	34,467
Grant Year 2021 \| PSO
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 62.25
Number of other equity instruments outstanding in share-based payment arrangement	531,809	874,480
Granted during of the year	28,375
Cancelled	13,046
Exercised (1)	358,000
Available for completion	404,570
Restricted stock, year one	127,239
Grant Year 2022 \| PSO
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 57.48
Number of other equity instruments outstanding in share-based payment arrangement	2,495,773	3,461,437
Granted during of the year	112,251
Cancelled	98,593
Exercised (1)	979,322
Restricted stock, year one	2,148,353
Restricted stock, year two	323,447
Restricted stock, year three	23,973
Grant Year 2022 \| Restricted share units
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 53.81
Number of other equity instruments outstanding in share-based payment arrangement		115,800
Granted during of the year	3,758
Exercised (1)	119,558
Grant Year 2023 \| PSO
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 48.84
Number of other equity instruments outstanding in share-based payment arrangement	2,992,558	3,052,179
Granted during of the year	98,965
Cancelled	95,361
Exercised (1)	63,225
Restricted stock, year one	29,253
Restricted stock, year two	2,670,308
Restricted stock, year three	292,997
Grant Year 2023 \| Restricted share units
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 51.41
Number of other equity instruments outstanding in share-based payment arrangement	396,016	383,568
Granted during of the year	12,448
Restricted stock, year two	277,249
Restricted stock, year three	118,767
Grant Year 2024 \| PSO
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 56.53
Number of other equity instruments outstanding in share-based payment arrangement	2,677,672	2,675,017
Granted during of the year	86,665
Cancelled	46,819
Exercised (1)	37,191
Restricted stock, year two	2,987
Restricted stock, year three	2,476,946
Restricted stock, year four	197,739
Grant Year 2024 \| Restricted share units
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 55.77
Number of other equity instruments outstanding in share-based payment arrangement	2,561,252	2,480,743
Granted during of the year	80,509
Restricted stock, year one	348,417
Restricted stock, year two	227,697
Restricted stock, year three	312,564
Grant Year 2025 \| PSO
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 60.53
Number of other equity instruments outstanding in share-based payment arrangement	1,661,851
Granted during of the year	1,683,347
Cancelled	4,095
Exercised (1)	17,401
Restricted stock, year four	1,661,851
Grant Year 2025 \| Restricted share units
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 61.39
Number of other equity instruments outstanding in share-based payment arrangement	267,096
Granted during of the year	267,096
Restricted stock, year one
Restricted stock, year two
Restricted stock, year three
Restricted stock, year four	150,604

Share-based compensation plan - Restricted shares plan (Details) - Restricted share units	3 Months Ended
	Mar. 31, 2025 shares shares	Dec. 31, 2024 BRL (R$) shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of other equity instruments outstanding in share-based payment arrangement	3,224,364	2,980,111
Granted during of the year	363,811
Restricted stock, year one	348,417
Restricted stock, year two	504,946
Restricted stock, year three	431,331
Restricted stock, year four	150,604
Restricted Stock, Year Five	1,672,574
Restricted Stock, Year Six	116,492
Grant Year 2022
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 53.81
Number of other equity instruments outstanding in share-based payment arrangement		115,800
Granted during of the year	3,758
Grant Year 2023
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 51.41
Number of other equity instruments outstanding in share-based payment arrangement	396,016	383,568
Granted during of the year	12,448
Restricted stock, year two	277,249
Restricted stock, year three	118,767
Grant Year 2024
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 55.77
Number of other equity instruments outstanding in share-based payment arrangement	2,561,252	2,480,743
Granted during of the year	80,509
Restricted stock, year one	348,417
Restricted stock, year two	227,697
Restricted stock, year three	312,564
Restricted Stock, Year Five	1,672,574
Grant Year 2025
Disclosure of terms and conditions of share-based payment arrangement [line items]
Fair value on grant date \| R$		R$ 61.39
Number of other equity instruments outstanding in share-based payment arrangement	267,096
Granted during of the year	267,096
Restricted stock, year one
Restricted stock, year two
Restricted stock, year three
Restricted stock, year four	150,604
Restricted Stock, Year Five
Restricted Stock, Year Six	116,492

Share-based compensation plan - Amounts recognized in the financial statements (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based compensation plans	R$ 361,895	R$ 361,974

Liabilities for assets acquisitions and subsidiaries (Details) - BRL (R$) R$ in Thousands	1 Months Ended
	Mar. 31, 2018	Mar. 31, 2025	Dec. 31, 2024
Disclosure of detailed information about business combination [line items]
Liabilities for assets acquisitions and subsidiaries		R$ 20,877	R$ 21,166
Liabilities for assets acquisitions and subsidiaries		94,547	99,324
Facepa (1)
Disclosure of detailed information about business combination [line items]
Liabilities for Assets Acquisitions through Business Combination		27,725	27,182
Asset Acquisition Consideration Transferred	R$ 307,876
Payments to Acquire Productive Assets	R$ 267,876
Vale Florestar Fundo de Investimento em Participações ("VFFIP") (2)
Disclosure of detailed information about business combination [line items]
Liabilities for Assets Acquisitions through Business Combination		87,699	93,308
Business combinations
Disclosure of detailed information about business combination [line items]
Liabilities for Assets Acquisitions through Business Combination		R$ 115,424	R$ 120,490

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

Shareholders equity - Other reserves (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disclosure of classes of share capital [line items]
Equity at beginning of period	R$ 32,415,575	R$ 44,810,300
Exchange rate variations on conversion of financial information of the subsidiaries abroad	(113,060)	2,054
Equity at end of period	38,535,646	44,724,599
Other reserves
Disclosure of classes of share capital [line items]
Equity at beginning of period	1,348,796	1,538,296
Equity at end of period	R$ 1,133,200	R$ 1,522,641

- Definition

The amount of residual interest in the assets of the entity after deducting all its liabilities.

+ References + Details

Shareholders equity - Treasury shares (Details) - BRL (R$)	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Disclosure of classes of share capital [line items]
Balance, Beginning of the period	24,875,787,000	34,765,600,000	34,765,600,000
Exercised (note 22.2)	(119,558,000)		(1,005,113,000)
Repurchase	699,700,000		51,115,300,000
Stock canceled During Period, Shares			(60,000,000,000)
Treasury Stock, Number of Shares	25,455,929,000		24,875,787,000
Weighted Average Price Per Share, Treasury Shares	R$ 53.84	R$ 42.69	R$ 42.69
Exercised (note 22.2)	53.84		47.55
Repurchase	55.26		54.91
Canceled			48.40
Weighted Average Price Per Share, Treasury Shares	R$ 53.87		R$ 53.84
Treasury shares	R$ 1,339,197,000	R$ 1,484,014,000	R$ 1,484,014,000
Exercised (note 22.2)	(6,437,000)		(47,794,000)
Repurchase	38,664,000	309,952,000	2,806,764,000
Canceled			(2,903,787,000)
Treasury shares	1,371,424,000		1,339,197,000
Market Value Of Treasury Shares	1,536,826,000	1,934,010,000	1,934,010,000
Exercised (note 22.2)	(6,577,000)	R$ (54,213,000)
Repurchase	38,664,000		2,806,764,000
Canceled			(3,238,200,000)
Market Value Of Treasury Shares	R$ 1,347,637,000		R$ 1,536,826,000

Earnings per share - Basic (Details) - BRL (R$) R$ / shares in Units, shares in Thousands, R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Basic earnings per share [abstract]
Resulted of the year attributable to controlling shareholders'	R$ 6,340,760	R$ 215,392
Weighted average number of shares in the period – in thousands	1,264,118	1,309,612
Weighted average treasury shares – in thousands	(25,047)	(24,110)
Weighted average number of outstanding shares – in thousands	1,239,071	1,285,502
Basic earnings per common share – R$	R$ 5.11735	R$ 0.16755

Earnings per share - Diluted (Details) - BRL (R$) R$ / shares in Units, shares in Thousands, R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Diluted earnings per share [abstract]
Resulted of the year attributable to controlling shareholders'	R$ 6,340,760	R$ 215,392
Weighted average number of shares during the period (except treasury shares) – in thousands	1,239,071	1,285,502
Average number of potential shares (stock options) - in thousands	3,171	664
Weighted average number of shares (diluted) – in thousands	1,242,242	1,286,166
Diluted earnings per common share – R$	R$ 5.10429	R$ 0.16747

Net financial results (Details) - BRL (R$) R$ in Thousands	3 Months Ended
Net financial results (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Financial expenses [Abstract]
Interest on loans, financing and debentures (1)	R$ (1,360,125)	R$ (853,289)
Amortization of transaction costs	(31,923)	(17,308)
Interest expenses on lease liabilities (2)	(116,258)	(109,806)
Other	(131,779)	(149,997)
Financial expenses	(1,640,085)	(1,130,400)
Financial income [Abstract]
Cash and cash equivalents and marketable securities	348,428	409,192
Other	90,425	15,025
Financial income	438,853	424,217
Results from derivative financial instruments [Abstract]
Income	4,224,351	716,512
Expenses	(531,192)	(1,351,049)
Derivative financial instruments, net	3,693,159	(634,537)
Monetary and exchange rate variations, net [Abstract]
Exchange rate variations on loans, financing and debentures	5,702,984	(2,071,835)
Leases	199,040	(71,671)
Other assets and liabilities (3)	(697,738)	444,178
Monetary and exchange variations, net	5,204,286	(1,699,328)
Net financial result	7,696,213	(3,040,048)
Interest costs capitalised	52,753	377,560
Reclassification to biological assets	R$ 66,200	R$ 223,055

Net sales (Details) - BRL (R$) R$ in Thousands	3 Months Ended
Net sales (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Notes and other explanatory information [abstract]
Gross sales	R$ 13,931,964	R$ 11,434,047
Returns and cancellations	(36,433)	(54,357)
Discounts and rebates	(1,812,315)	(1,394,942)
Total	12,083,216	9,984,748
Taxes on sales	(530,295)	(526,146)
Net sales	R$ 11,552,921	R$ 9,458,602

Information of operating segments - Segment information (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disclosure of operating segments [line items]
Net sales	R$ 11,552,921	R$ 9,458,602
Cost of sales	(7,729,167)	(5,699,870)
Adjusted EBITDA	4,865,774	4,557,906
Adjustments to EBITDA	(109,317)	(23,656)
Depreciation, depletion and amortization	(2,497,422)	(1,982,024)
Financial result	7,696,213	(3,040,048)
Net income before taxes	2,259,035	2,552,226
Profit (loss) before tax	9,955,248	(487,822)
Total Net Sales
Disclosure of operating segments [line items]
Net sales	11,552,921	9,458,602
Country of domicile
Disclosure of operating segments [line items]
Net sales	2,148,612	2,058,658
Foreign countries
Disclosure of operating segments [line items]
Net sales	9,404,309	7,399,944
Pulp
Disclosure of operating segments [line items]
Cost of sales	(5,696,157)	(4,374,903)
Adjusted EBITDA	4,254,146	3,902,250
Pulp \| Total Net Sales
Disclosure of operating segments [line items]
Net sales	8,611,543	7,359,846
Pulp \| Country of domicile
Disclosure of operating segments [line items]
Net sales	457,416	486,168
Pulp \| Foreign countries
Disclosure of operating segments [line items]
Net sales	8,154,127	6,873,678
Paper
Disclosure of operating segments [line items]
Cost of sales	(2,033,010)	(1,324,967)
Adjusted EBITDA	611,628	655,656
Paper \| Total Net Sales
Disclosure of operating segments [line items]
Net sales	2,941,378	2,098,756
Paper \| Country of domicile
Disclosure of operating segments [line items]
Net sales	1,691,196	1,572,490
Paper \| Foreign countries
Disclosure of operating segments [line items]
Net sales	R$ 1,250,182	R$ 526,266

Segment information - Adjustment to EBITDA (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Notes and other explanatory information [abstract]
Income from disposal and write-off of property, plant and equipment and biological assets	R$ (46,306)	R$ (36,312)
Provision/(reversals) for losses on ICMS credits	(45,765)	23,763
Other	(17,246)	(11,107)
Adjustments to EBITDA	R$ (109,317)	R$ (23,656)

Net sales by product - Segment information (Details) - BRL (R$) R$ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disclosure of operating segments [line items]
Net sales	R$ 11,552,921	R$ 9,458,602
Total of products
Disclosure of operating segments [line items]
Net sales	11,552,921	9,458,602
Market pulp (1)
Disclosure of operating segments [line items]
Net sales	8,611,543	7,359,846
Printing and writing paper (2)
Disclosure of operating segments [line items]
Net sales	1,879,301	1,780,944
Paperboard
Disclosure of operating segments [line items]
Net sales	1,051,768	298,190
Other
Disclosure of operating segments [line items]
Net sales	R$ 10,309	R$ 19,622
Fluff pulp
Disclosure of operating segments [line items]
Percentage of entity's revenue	0.60%	0.70%
Tissue
Disclosure of operating segments [line items]
Percentage of entity's revenue	6.00%	6.70%

Goodwill based on expected future profitability - Segment information (Details) - BRL (R$) R$ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Total
Disclosure of operating segments [line items]
Goodwill Based On Expected Future Profitability	R$ 8,187,242	R$ 8,187,242
Pulp
Disclosure of operating segments [line items]
Goodwill Based On Expected Future Profitability	7,897,051	7,897,051
Paper
Disclosure of operating segments [line items]
Goodwill Based On Expected Future Profitability	R$ 290,191	R$ 290,191

Income (expenses) by nature (Details) - BRL (R$) R$ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Disclosure of attribution of expenses by nature to their function [line items]
Personnel expenses	R$ (520,711)	R$ (364,650)
Costs of raw materials, materials and services	(3,153,449)	(2,479,702)
Logistics cost	(1,296,365)	(1,063,930)
Depreciation, depletion and amortization	(2,223,588)	(1,706,401)
Other (1)	(535,054)	(85,187)
Total	(7,729,167)	(5,699,870)
Personnel expenses	(90,189)	(72,670)
Services	(55,666)	(47,850)
Logistics cost	(340,905)	(272,620)
Depreciation and amortization	(241,026)	(238,962)
Other (2)	(27,096)	(21,313)
Selling	(754,882)	(653,415)
Personnel expenses	(403,006)	(320,672)
Services	(115,819)	(92,452)
Depreciation and amortization	(30,276)	(34,313)
Other (3)	(124,450)	(55,538)
General and administrative	(673,551)	(502,975)
Rents and leases	520	189
Results from sales of other products, net	26,967	24,486
Results from sales and disposals of property, plant and equipment, intangible and biological assets, net	(46,307)	(47,554)
Result on fair value adjustment of biological assets			R$ 1,431,530
Depletion, amortization and other PPA realizations (4)	(2,532)	(2,348)
Provision for judicial liabilities	(104,863)	(26,109)
Other operating income (expenses), net	7,006	11,127
Total	(119,209)	(40,209)
Other operating income, net	(119,209)	(40,209)
Cost Of Sales , Idle Capacity And Maintenance	R$ 416,608	R$ 55,308