v3.26.1
Property, plant and equipment - Schedule of Property, Plant and Equipment (Details) - CAD ($)
$ in Millions
 12 Months Ended
Mar. 29, 2026
Mar. 30, 2025
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance $ 161.6  
Property, plant and equipment, ending balance 167.6 $ 161.6
Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 385.0 347.9
Additions 52.4 29.1
Disposals (7.8) (3.8)
Transfers 0.0 0.0
Impact of foreign currency translation (1.9) 11.8
Property, plant and equipment, ending balance 427.7 385.0
Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (223.4) (176.1)
Depreciation 40.2 42.5
Disposals 7.0 3.3
Impairment losses 4.0 1.3
Impact of foreign currency translation 0.5 (6.8)
Property, plant and equipment, ending balance (260.1) (223.4)
Plant equipment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 15.1  
Property, plant and equipment, ending balance 13.4 15.1
Plant equipment | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 38.4 37.3
Additions 1.8 0.2
Disposals (0.1) (0.1)
Transfers 0.5 0.5
Impact of foreign currency translation 0.1 0.5
Property, plant and equipment, ending balance 40.7 38.4
Plant equipment | Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (23.3) (18.9)
Depreciation 3.8 4.0
Disposals 0.0 0.0
Impairment losses 0.0 0.0
Impact of foreign currency translation (0.2) (0.4)
Property, plant and equipment, ending balance (27.3) (23.3)
Computer equipment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 4.1  
Property, plant and equipment, ending balance 2.9 4.1
Computer equipment | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 23.1 21.3
Additions 0.6 0.2
Disposals (1.1) (0.2)
Transfers 1.4 1.2
Impact of foreign currency translation (0.1) 0.6
Property, plant and equipment, ending balance 23.9 23.1
Computer equipment | Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (19.0) (15.3)
Depreciation 3.2 3.5
Disposals 1.1 0.2
Impairment losses 0.0 0.0
Impact of foreign currency translation 0.1 (0.4)
Property, plant and equipment, ending balance (21.0) (19.0)
Leasehold improvements    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 116.8  
Property, plant and equipment, ending balance 117.3 116.8
Leasehold improvements | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 246.9 225.2
Additions 9.4 5.4
Disposals (3.5) (3.1)
Transfers 24.8 11.5
Impact of foreign currency translation (2.0) 7.9
Property, plant and equipment, ending balance 275.6 246.9
Leasehold improvements | Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (130.1) (99.1)
Depreciation 27.7 28.5
Disposals 3.1 2.8
Impairment losses 4.0 1.3
Impact of foreign currency translation 0.4 (4.0)
Property, plant and equipment, ending balance (158.3) (130.1)
Shop-in-shop fixtures    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 0.6  
Property, plant and equipment, ending balance 1.6 0.6
Shop-in-shop fixtures | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 10.7 10.3
Additions 0.2 0.1
Disposals (0.6) 0.0
Transfers 1.2 0.0
Impact of foreign currency translation 0.0 0.3
Property, plant and equipment, ending balance 11.5 10.7
Shop-in-shop fixtures | Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (10.1) (8.9)
Depreciation 0.5 0.8
Disposals 0.6 0.0
Impairment losses 0.0 0.0
Impact of foreign currency translation 0.1 (0.4)
Property, plant and equipment, ending balance (9.9) (10.1)
Furniture and fixtures    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 13.1  
Property, plant and equipment, ending balance 12.6 13.1
Furniture and fixtures | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 54.0 49.7
Additions 2.1 1.4
Disposals (2.5) (0.4)
Transfers 2.8 1.3
Impact of foreign currency translation (0.2) 2.0
Property, plant and equipment, ending balance 56.2 54.0
Furniture and fixtures | Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (40.9) (33.9)
Depreciation 5.0 5.7
Disposals 2.2 0.3
Impairment losses 0.0 0.0
Impact of foreign currency translation 0.1 (1.6)
Property, plant and equipment, ending balance (43.6) (40.9)
In progress    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 11.9  
Property, plant and equipment, ending balance 19.8 11.9
In progress | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 11.9 4.1
Additions 38.3 21.8
Disposals 0.0 0.0
Transfers (30.7) (14.5)
Impact of foreign currency translation 0.3 0.5
Property, plant and equipment, ending balance 19.8 11.9
In progress | Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 0.0 0.0
Depreciation 0.0 0.0
Disposals 0.0 0.0
Impairment losses 0.0 0.0
Impact of foreign currency translation 0.0 0.0
Property, plant and equipment, ending balance $ 0.0 $ 0.0