XML 119 R95.htm IDEA: XBRL DOCUMENT v3.25.1
TAXATION - Deferred tax assets and liabilities (Details) - CAD ($)
$ in Thousands
Mar. 31, 2025
Mar. 31, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) $ 3,449 $ (75,449)
Deferred tax assets and liabilities [abstract]    
Deferred income tax assets 104,022 5,904
Deferred income tax liabilities (100,573) (81,353)
Net deferred income tax asset (liability) 3,449 (75,449)
Accounting income not currently taxable    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 53,612 24,782
Deferred tax assets and liabilities [abstract]    
Net deferred income tax asset (liability) 53,612 24,782
Intangible assets    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) (138,615) (128,423)
Deferred tax assets and liabilities [abstract]    
Net deferred income tax asset (liability) (138,615) (128,423)
Investment tax credits taxable in future years when utilized    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) (4,781) (5,332)
Deferred tax assets and liabilities [abstract]    
Net deferred income tax asset (liability) (4,781) (5,332)
Loss available for offset against future taxable income    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 63,446 9,537
Deferred tax assets and liabilities [abstract]    
Net deferred income tax asset (liability) 63,446 9,537
Property, plant and equipment    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 21,197 19,001
Deferred tax assets and liabilities [abstract]    
Net deferred income tax asset (liability) 21,197 19,001
Other    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liability (asset) 8,590 4,986
Deferred tax assets and liabilities [abstract]    
Net deferred income tax asset (liability) $ 8,590 $ 4,986