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v3.25.1

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

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- Definition Additional allowance recognised in profit or loss, allowance account for credit losses + References No definition available. + Details
Name: | suz_AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLosses
Namespace Prefix: | suz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition This element should be used to tag non-restated comparative information only. Allowance account for credit losses of financial assets at beginning of period. Allowance account for credit losses of financial assets at end of period + References No definition available. + Details
Name: | suz_AllowanceAccountForCreditLossesFinancialAssets
Namespace Prefix: | suz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Inventories [Line Items] + References No definition available. + Details
Name: | suz_InventoriesLineItems
Namespace Prefix: | suz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Reversal Allowance Account For Credit Losses Financial Assets + References No definition available. + Details
Name: | suz_ReversalAllowanceAccountForCreditLossesFinancialAssets
Namespace Prefix: | suz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Utilisation Allowance Account For Credit Losses Financial Assets + References No definition available. + Details
Name: | suz_UtilisationAllowanceAccountForCreditLossesFinancialAssets
Namespace Prefix: | suz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration