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Accumulated other comprehensive income | 12 Months Ended
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Sep. 30, 2024
Disclosure of analysis of other comprehensive income by item [abstract] |
Accumulated other comprehensive income | Accumulated other comprehensive income
| As at September 30, 2024 | As at September 30, 2023
| $ | $
Items that will be reclassified subsequently to net earnings: |  |
Net unrealized gains on translating financial statements of foreign operations, net of accumulated income tax expens e of $44,210 ($44,867 as at September 30, 2023) | 896,259 |  | 534,321 |
Net losses on cross-currency swaps and on translating long-term debt designated as hedges of net investments in foreign operations, net of accumulated income tax recovery of $48,921 ($49,991 as at September 30, 2023) | (388,957) |  | (325,649) |
Deferr ed gains of hedging on cross-currency swaps, net of accumulated income tax expense of $2,907 ($1,754 as a t September 30, 2023) | 19,031 |  | 13,541 |
Net unrealized (losses) gains on cash flow hedges, net of accumulated income tax recovery of $1,421 (net of accumulated income tax expense of $3,953 as at September 30, 2023) | (6,930) |  | 11,524 |
Net unrealized gains (losses) on financial assets at fair value through other comprehensive income, net of accumulated income tax expense of $707 (net of accumulated income tax recovery of $1,189 as at September 30, 2023) | 2,447 |  | (3,412) |
Items that will not be reclassified subsequently to net earnings: |  |
Net rem easurement losses on defined benefit plans, net of accumulated income tax recovery of $24,817 ($25,173 as at September 30, 2023) | (70,597) |  | (71,350) |
| 451,253 |  | 158,975 |
For the year ended September 30, 2024, $10,872,000 of the net unrealized gains on cash flow hedges, net of income tax expense of $3,814,000, previously recognized in other comprehensive income were reclassified in the consolidated statements of earnings ($17,937,000 and $6,278,000, respectively, were reclassified for the year ended September 30, 2023). For the year ended September 30, 2024, $12,562,000 of the deferred gains of hedging on cross-currency swaps, net of income tax expense of $1,919,000, were also reclassified in the consolidated statements of earnings ($18,540,000 and $2,832,000, respectively for the year ended September 30, 2023).

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