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v3.25.3

Property, plant and equipment - Asset Retirement Obligation (Details) - BRL (R$) R$ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Disclosure of detailed information about financial instruments [abstract] |  |
Asset Retirement Obligation | R$ 68,597,000 | R$ 65,327,000

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- References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of the provision Asset retirement obligation of industrial landfills. + References No definition available. + Details
Name: | suz_AssetRetirementObligation
Namespace Prefix: | suz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant