v3.26.1
Income taxes - Schedule of Changes in Deferred Tax Assets and Liabilities (Details)
$ in Millions
 12 Months Ended
Mar. 29, 2026
CAD ($)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Deferred tax assets, beginning balance $ 95.7
Deferred tax liabilities, beginning balance (20.8)
Net deferred tax assets, beginning balance 74.9
Adjustments 0.0
Net income (8.7)
Foreign exchange translation (1.4)
Other comprehensive income 1.1
Deferred tax assets, ending balance 76.9
Deferred tax liabilities, ending balance (11.0)
Net deferred tax assets, ending balance 65.9
Deferred tax assets  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Adjustments 0.0
Net income (17.3)
Foreign exchange translation (1.5)
Other comprehensive income 0.0
Deferred tax liabilities  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]  
Adjustments 0.0
Net income 8.6
Foreign exchange translation 0.1
Other comprehensive income $ 1.1