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Provisions (Tables) | 12 Months Ended
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Sep. 30, 2025
Provisions [abstract] |
Disclosure of movement in provisions |
| Severances 1 | Decommissioning liabilities 2 | Others 3 | Total
| $ | $ | $ | $
As at September 30, 2024 | 12,003 |  | 20,038 |  | 14,381 |  | 46,422 |
Additional provisions | 217,475 |  | 7,719 |  | 21,114 |  | 246,308 |
Utilized amounts | (95,650) |  | (647) |  | (8,496) |  | (104,793) |
Reversals of unused amounts | (3,819) |  | (628) |  | (6,287) |  | (10,734) |
Discount rate adjustment and imputed interest | — |  | 297 |  | 136 |  | 433 |
Foreign currency translation adjustment | 4,307 |  | 1,159 |  | 894 |  | 6,360 |
As at September 30, 2025 | 134,316 |  | 27,938 |  | 21,742 |  | 183,996 |
Current portion | 119,850 |  | 6,786 |  | 17,695 |  | 144,331 |
Non-current portion | 14,466 |  | 21,152 |  | 4,047 |  | 39,665 |
1 See Note 25, Restructuring, acquisition and related integration costs. 2 As at September 30, 2025, the decommissioning liabilities were based on the expected cash flows of $26,718,000 and were discounted at a weighted average rate of 1.73%. The timing of settlements of these obligations ranges between one and fifteen years as at September 30, 2025. The reversals of unused amounts are due to favourable settlements. 3 As at September 30, 2025, others included provisions on revenue-generating contracts, onerous supplier contracts mainly under the restructuring, the cost optimization program and related integration costs (Note 25), as well as litigation and claims.

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