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Share-based payments - Disclosure of share-based payment expense (Details) - CAD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Share-based payment expense | $ 264,403 | $ 254,213
PSUs |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Share-based payment expense | 68,636 | 67,054
Stock options |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Share-based payment expense | 0 | 786
Share purchase plan |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Share-based payment expense | 196,510 | 181,989
DSUs |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Share-based payment expense | $ (743) | $ 4,384

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard -URIDate 2025-03-27 + Details
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- Details
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- Details
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- Details
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- Details
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