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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
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-Paragraph 85
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_85&doctype=Standard
-URIDate 2025-03-27

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The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

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The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Classes of financial instruments [domain]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
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-IssueDate 2025-01-01
-Paragraph 218
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_218_a&doctype=Standard
-URIDate 2025-03-27

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_35&doctype=Standard
-URIDate 2025-03-27

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The gains resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

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The amount of interest costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
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The losses resulting from changes in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

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Period Type:	duration

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Amount of amortization expense attributable to debt issuance costs.

No definition available.

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Data Type:	xbrli:monetaryItemType
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The amount of costs associated with financing activities of the entity before gains (losses) on exchange differences.

No definition available.

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Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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The amount of income associated with interest and other financing activities of the entity before gains (losses) on exchange differences.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Financial expenses

No definition available.

Name:	suz_FinancialExpensesAbstract
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The amount of financial expenses attributable to interest expense on lease liabilities.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Financial income

No definition available.

Name:	suz_FinancialIncomeAbstract
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The amount of exchange differences related to loans and financing, recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9.

No definition available.

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The amount of exchange differences related to other assets and liabilities, recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9.

No definition available.

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The amount of gains (losses) on exchange rate variation net, relating to leases.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Monetary and exchange rate variations, net

No definition available.

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Premium expenses on early settlements

No definition available.

Name:	suz_PremiumExpensesOnEarlySettlements
Namespace Prefix:	suz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Reclassification to biological assets

No definition available.

Name:	suz_ReclassificationToBiologicalAssets
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Results from derivative financial instruments

No definition available.