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Supplementary cash flow information - Net change in non-cash working capital (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Cash Flow Statement [Abstract] |  |
Accounts receivable | $ 106,360 | $ (31,120)
Work in progress | (8,999) | 76,554
Prepaid expenses and other assets | 4,466 | 3,547
Long-term financial assets | (24,423) | (9,911)
Accounts payable and accrued liabilities | 22,151 | (130,172)
Accrued compensation and employee-related liabilities | (27,689) | (57,644)
Deferred revenue | 50,420 | 45,681
Income taxes | (98,207) | 105,577
Provisions | (594) | (10,129)
Long-term liabilities | 33,540 | 18,893
Derivative financial instruments | 634 | (682)
Retirement benefits obligations | 7,337 | 5,871
Increase (decrease) in working capital | $ 64,996 | $ 16,465

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- Definition Adjustments for decrease (increase) in loans and advances to banks to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Loans and advances to banks; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 20 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard -URIDate 2024-03-27 + Details
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