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Cost of services, selling and administrative
 12 Months Ended
Sep. 30, 2024
Analysis of income and expense [abstract]  
Cost of services, selling and administrative Costs of services, selling and administrative
Year ended September 30
2024 2023
$ $
 Salaries and other employee costs1
 9,156,779  8,870,235 
 Professional fees and other contracted labour 1,436,403  1,500,613 
 Hardware, software and data center related costs 866,883  827,613 
 Property costs 201,194  213,962 
 Amortization, depreciation and impairment (Note 24)
 522,308  506,122 
 Other operating expenses 76,163  63,876 
12,259,730  11,982,421 
1    Net of R&D and other tax credits of $134,911,000 in 2024 ($159,390,000 in 2023).