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Contract costs (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2024
Revenue From Contracts With Customers [Abstract] |
Disclosure of contract costs |
| As at September 30, 2024 | As at September 30, 2023
| Cost | Accumulated amortization and impairment | Net carrying amount | Cost | Accumulated amortization and impairment | Net carrying amount
| $ | $ | $ | $ | $ | $
Transition costs | 610,971 |  | 274,243 |  | 336,728 |  | 549,848 |  | 250,847 |  | 299,001 |
Incentives | 51,045 |  | 43,744 |  | 7,301 |  | 52,331 |  | 42,886 |  | 9,445 |
| 662,016 |  | 317,987 |  | 344,029 |  | 602,179 |  | 293,733 |  | 308,446 |

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