v3.24.1.1.u2
Intangible assets - Schedule of Changes in Intangible Assets with Finite Lives (Details) - CAD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2024
Apr. 02, 2023
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance $ 135.1  
Intangible assets, ending balance 135.1 $ 135.1
Intangible assets with finite lives    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 19.3  
Intangible assets, ending balance 18.3 19.3
Intangible assets with finite lives | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 43.5 26.7
Additions 0.9 1.9
Additions from business combinations (note 5) 3.5 14.9
Disposals 0.1  
Impact of foreign currency translation (1.6)  
Intangible assets, ending balance 46.2 43.5
Intangible assets with finite lives | Accumulated amortization    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance (24.2) (20.3)
Amortization 3.8 3.9
Disposals (0.1)  
Impact of foreign currency translation 0.0  
Intangible assets, ending balance (27.9) (24.2)
Intangible assets with finite lives | Software    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 4.9  
Intangible assets, ending balance 3.8 4.9
Intangible assets with finite lives | Software | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 10.3 8.5
Additions 0.8 1.8
Additions from business combinations (note 5) 0.0 0.0
Disposals 0.1  
Impact of foreign currency translation (0.1)  
Intangible assets, ending balance 10.9 10.3
Intangible assets with finite lives | Software | Accumulated amortization    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance (5.4) (3.6)
Amortization 1.8 1.8
Disposals (0.1)  
Impact of foreign currency translation 0.0  
Intangible assets, ending balance (7.1) (5.4)
Intangible assets with finite lives | Intellectual property    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 0.9  
Intangible assets, ending balance 0.6 0.9
Intangible assets with finite lives | Intellectual property | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 18.3 18.2
Additions 0.1 0.1
Additions from business combinations (note 5) 0.0 0.0
Disposals 0.0  
Impact of foreign currency translation 0.1  
Intangible assets, ending balance 18.5 18.3
Intangible assets with finite lives | Intellectual property | Accumulated amortization    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance (17.4) (16.7)
Amortization 0.5 0.7
Disposals 0.0  
Impact of foreign currency translation 0.0  
Intangible assets, ending balance (17.9) (17.4)
Intangible assets with finite lives | Customer-related intangible assets    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 7.0  
Intangible assets, ending balance 8.9 7.0
Intangible assets with finite lives | Customer-related intangible assets | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 7.7 0.0
Additions 0.0 0.0
Additions from business combinations (note 5) 3.5 7.7
Disposals 0.0  
Impact of foreign currency translation (0.7)  
Intangible assets, ending balance 10.5 7.7
Intangible assets with finite lives | Customer-related intangible assets | Accumulated amortization    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance (0.7) 0.0
Amortization 0.8 0.7
Disposals 0.0  
Impact of foreign currency translation 0.1  
Intangible assets, ending balance (1.6) (0.7)
Intangible assets with finite lives | Distribution rights    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 6.5  
Intangible assets, ending balance 5.0 6.5
Intangible assets with finite lives | Distribution rights | Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance 7.2 0.0
Additions 0.0 0.0
Additions from business combinations (note 5) 0.0 7.2
Disposals 0.0  
Impact of foreign currency translation (0.9)  
Intangible assets, ending balance 6.3 7.2
Intangible assets with finite lives | Distribution rights | Accumulated amortization    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Intangible assets, beginning balance (0.7) 0.0
Amortization 0.7 0.7
Disposals 0.0  
Impact of foreign currency translation (0.1)  
Intangible assets, ending balance $ (1.3) $ (0.7)