Cost of services, selling and administrative (Details) - CAD ($) |
12 Months Ended | |
|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
|
| Disclosure of attribution of expenses by nature to their function [line items] | ||
| Salaries, other employee costs and contracted labour costs | $ 11,184,452,000 | $ 10,301,386,000 |
| Hardware, software and data center related costs | 957,218,000 | 866,883,000 |
| Professional fees | 268,322,000 | 293,452,000 |
| Property costs | 220,845,000 | 201,194,000 |
| Amortization, depreciation and impairment (Note 24) | 585,665,000 | 522,308,000 |
| Other operating expenses | 84,543,000 | 74,507,000 |
| Costs of services, selling and administrative | 13,301,045,000 | 12,259,730,000 |
| R&D and other tax credits | $ 173,042,000 | 134,911,000 |
| Revision of Prior Period, Reclassification, Adjustment | ||
| Disclosure of attribution of expenses by nature to their function [line items] | ||
| Salaries, other employee costs and contracted labour costs | 1,142,951,000 | |
| Professional fees | $ (1,142,951,000) | |