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Long-term financial assets (Tables)
12 Months Ended
Sep. 30, 2025
Subclassifications of assets, liabilities and equities [abstract]  
Disclosure of long-term financial assets
As at
September 30, 2025
As at
September 30, 2024
$ $
Deferred compensation plan assets (Notes 17 and 32)
125,388  112,270 
Long-term investments (Note 32)
27,687  24,209 
Long-term receivables 8,509  10,114 
Long-term derivative financial instruments (Note 32)
854  2,644 
162,438  149,237