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Company's Operations - Summary (Details) - item | Dec. 31, 2025 | Jun. 30, 2025
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Company's Operations [Line Items] |  |
Number of Industrial Units | 16 |
Number of Technology Centers | 6,000 |
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
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 |

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