Property, plant and equipment (Details) - CAD ($) $ in Millions	12 Months Ended
Mar. 31, 2024	Apr. 02, 2023
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	$ 156.0
Property, plant and equipment, ending balance	171.8	$ 156.0
Cost
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	296.4	217.1
Additions	60.4	75.2
Additions from business combinations (note 5)	2.6	1.2
Disposals	9.0	1.2
Transfers	0.0	0.0
Impact of foreign currency translation	(2.5)	4.1
Property, plant and equipment, ending balance	347.9	296.4
Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	(140.4)	(102.9)
Depreciation	45.4	37.4
Disposals	(8.7)	(1.2)
Impairment losses	0.2	0.2
Impact of foreign currency translation	(1.2)	1.1
Property, plant and equipment, ending balance	(176.1)	(140.4)
Plant equipment
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	16.7
Property, plant and equipment, ending balance	18.4	16.7
Plant equipment \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	32.0	30.9
Additions	0.2	0.0
Additions from business combinations (note 5)	2.4	0.0
Disposals	0.1	0.0
Transfers	2.9	1.1
Impact of foreign currency translation	(0.1)	0.0
Property, plant and equipment, ending balance	37.3	32.0
Plant equipment \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	(15.3)	(12.1)
Depreciation	3.7	3.2
Disposals	(0.1)	0.0
Impairment losses	0.0	0.0
Impact of foreign currency translation	0.0	0.0
Property, plant and equipment, ending balance	(18.9)	(15.3)
Computer equipment
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	3.2
Property, plant and equipment, ending balance	6.0	3.2
Computer equipment \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	15.3	12.8
Additions	1.9	0.9
Additions from business combinations (note 5)	0.1	0.0
Disposals	0.3	0.1
Transfers	4.4	1.5
Impact of foreign currency translation	(0.1)	0.2
Property, plant and equipment, ending balance	21.3	15.3
Computer equipment \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	(12.1)	(9.3)
Depreciation	3.4	2.7
Disposals	(0.2)	(0.1)
Impairment losses	0.0	0.0
Impact of foreign currency translation	0.0	0.2
Property, plant and equipment, ending balance	(15.3)	(12.1)
Leasehold improvements
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	75.3
Property, plant and equipment, ending balance	126.1	75.3
Leasehold improvements \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	151.4	125.1
Additions	11.5	8.8
Additions from business combinations (note 5)	0.1	0.9
Disposals	6.4	1.0
Transfers	70.4	15.5
Impact of foreign currency translation	(1.8)	2.1
Property, plant and equipment, ending balance	225.2	151.4
Leasehold improvements \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	(76.1)	(53.9)
Depreciation	30.2	23.1
Disposals	(6.4)	(1.0)
Impairment losses	0.2	0.2
Impact of foreign currency translation	(1.0)	(0.1)
Property, plant and equipment, ending balance	(99.1)	(76.1)
Show displays
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	2.7
Property, plant and equipment, ending balance	1.4	2.7
Show displays \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	11.4	9.4
Additions	0.2	0.0
Additions from business combinations (note 5)	0.0	0.0
Disposals	1.0	0.0
Transfers	(0.4)	1.6
Impact of foreign currency translation	0.1	0.4
Property, plant and equipment, ending balance	10.3	11.4
Show displays \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	(8.7)	(7.3)
Depreciation	1.2	1.1
Disposals	(1.0)	0.0
Impairment losses	0.0	0.0
Impact of foreign currency translation	0.0	0.3
Property, plant and equipment, ending balance	(8.9)	(8.7)
Furniture and fixtures
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	11.6
Property, plant and equipment, ending balance	15.8	11.6
Furniture and fixtures \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	39.8	34.8
Additions	3.7	2.2
Additions from business combinations (note 5)	0.0	0.3
Disposals	1.1	0.1
Transfers	7.7	1.6
Impact of foreign currency translation	(0.4)	1.0
Property, plant and equipment, ending balance	49.7	39.8
Furniture and fixtures \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	(28.2)	(20.3)
Depreciation	6.9	7.3
Disposals	(1.0)	(0.1)
Impairment losses	0.0	0.0
Impact of foreign currency translation	(0.2)	0.7
Property, plant and equipment, ending balance	(33.9)	(28.2)
In progress
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	46.5
Property, plant and equipment, ending balance	4.1	46.5
In progress \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Property, plant and equipment, beginning balance	46.5	4.1
Additions	42.9	63.3
Additions from business combinations (note 5)	0.0	0.0
Disposals	0.1	0.0
Transfers	(85.0)	(21.3)
Impact of foreign currency translation	(0.2)	0.4
Property, plant and equipment, ending balance	4.1	46.5
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

The increase in property, plant and equipment resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Property, plant and equipment]

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- Definition

The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment]

+ References

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- Definition

The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment]

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The decrease in property, plant and equipment resulting from disposals. [Refer: Property, plant and equipment]

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- Definition

The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment]

+ References

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The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Property, plant and equipment]

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The increase (decrease) in property, plant and equipment resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Property, plant and equipment]

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The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets]

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