General information about financial statements (Details) - item |
Dec. 31, 2025 |
Sep. 30, 2025 |
|---|---|---|
| BRAZIL | Fibria | ||
| Company's Operations [Line Items] | ||
| Number of Ports | 4 | |
| BRAZIL | ||
| Company's Operations [Line Items] | ||
| Number of Technology Centers | 4,000 | |
| Number of Distribution Centers | 29 | |
| BRAZIL | Suzano Industrial | ||
| Company's Operations [Line Items] | ||
| Number of Industrial Units | 14 | |
| State of Sao Paulo | Suzano Industrial | ||
| Company's Operations [Line Items] | ||
| Number of Industrial Units | 2 |