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v3.25.3

Employee benefits - Plan assets and reimbursement rights (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Disclosure of net defined benefit liability (asset) [line items] |  |
Interest income on plan assets | $ (4,221) | $ (6,101)
Administration expenses paid from the plan | (3,432) | (1,462)
Plan assets | 707,712 | 730,028
Reimbursement rights | 20,139 | 19,675
Plan assets |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Net defined benefit asset | 749,703 | 631,569
Interest income on plan assets | 36,960 | 35,585
Employer contributions | 16,467 | 12,977
Return on assets excluding interest income | (52,468) | 51,646
Plan participant contributions | 176 | 248
Benefits paid from the plan | (36,244) | (31,751)
Benefits paid directly by employer | (7,771) | (5,721)
Administration expenses paid from the plan | (3,432) | (1,462)
Foreign currency translation adjustment | 24,460 | 56,612
Plan assets | 707,712 | 730,028
Reimbursement rights | 20,139 | 19,675
Net defined benefit asset | 727,851 | 749,703
U.K. |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Plan assets | 611,040 | 642,538
Reimbursement rights | 0 | 0
U.K. | Plan assets |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Net defined benefit asset | 642,538 | 536,226
Interest income on plan assets | 31,518 | 30,573
Employer contributions | 358 | 426
Return on assets excluding interest income | (48,857) | 50,973
Plan participant contributions | 57 | 86
Benefits paid from the plan | (32,269) | (27,712)
Benefits paid directly by employer | 0 | 0
Administration expenses paid from the plan | (3,432) | (1,462)
Foreign currency translation adjustment | 21,127 | 53,428
Plan assets | 611,040 | 642,538
Reimbursement rights | 0 | 0
Net defined benefit asset | 611,040 | 642,538
France |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Plan assets | 0 | 0
Reimbursement rights | 0 | 0
France | Plan assets |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Net defined benefit asset | 0 | 0
Interest income on plan assets | 0 | 0
Employer contributions | 2,793 | 2,033
Return on assets excluding interest income | 0 | 0
Plan participant contributions | 0 | 0
Benefits paid from the plan | 0 | 0
Benefits paid directly by employer | (2,793) | (2,033)
Administration expenses paid from the plan | 0 | 0
Foreign currency translation adjustment | 0 | 0
Plan assets | 0 | 0
Reimbursement rights | 0 | 0
Net defined benefit asset | 0 | 0
GERMANY |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Plan assets | 13,254 | 12,599
Reimbursement rights | 19,752 | 19,300
GERMANY | Plan assets |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Net defined benefit asset | 31,899 | 30,829
Interest income on plan assets | 1,090 | 1,300
Employer contributions | 4,545 | 2,804
Return on assets excluding interest income | (2,975) | (906)
Plan participant contributions | 0 | 0
Benefits paid from the plan | (156) | (503)
Benefits paid directly by employer | (4,069) | (3,192)
Administration expenses paid from the plan | 0 | 0
Foreign currency translation adjustment | 2,672 | 1,567
Plan assets | 13,254 | 12,599
Reimbursement rights | 19,752 | 19,300
Net defined benefit asset | 33,006 | 31,899
Other |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Plan assets | 83,418 | 74,891
Reimbursement rights | 387 | 375
Other | Plan assets |  |
Disclosure of net defined benefit liability (asset) [line items] |  |
Net defined benefit asset | 75,266 | 64,514
Interest income on plan assets | 4,352 | 3,712
Employer contributions | 8,771 | 7,714
Return on assets excluding interest income | (636) | 1,579
Plan participant contributions | 119 | 162
Benefits paid from the plan | (3,819) | (3,536)
Benefits paid directly by employer | (909) | (496)
Administration expenses paid from the plan | 0 | 0
Foreign currency translation adjustment | 661 | 1,617
Plan assets | 83,418 | 74,891
Reimbursement rights | 387 | 375
Net defined benefit asset | $ 83,805 | $ 75,266

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- Definition The decrease (increase) in net defined benefit liability (asset) resulting from contributions to a defined benefit plan by the employer. [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 141 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_f&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from contributions to a defined benefit plan by plan participants. [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 141 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_f&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from payments from the plan. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 141 -Subparagraph g -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_g&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 207 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_207_f&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 207 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_207_f&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_57_a&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of the entity's rights to the reimbursement by another party of some or all of the expenditure required to settle a defined benefit obligation recognised as a separate asset and measured at fair value. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 140 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_140_b&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 206 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_206_b&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 206 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_206_b&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plan assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [domain]; Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 141 -Subparagraph c -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_141_c_i&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 207 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_207_c&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 207 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_207_c&doctype=Standard -URIDate 2025-03-27 + Details
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