Leases - Summary Of Supplemental Cash Flow Information Operating Lease (Parenthetical) (Detail) - CAD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 28, 2026 |
Mar. 29, 2025 |
Mar. 30, 2024 |
|
| Summary Of Supplemental Cash Flow Information Operating Lease [Line Items] | |||
| Leasehold Inducements | $ 0.2 | $ 1.9 | $ 1.7 |
| Accounts Receivable and other receivables [Member] | |||
| Summary Of Supplemental Cash Flow Information Operating Lease [Line Items] | |||
| Leasehold Inducements | $ 0.3 | $ 0.8 | |