v3.26.1
Trade receivables - Schedule of Allowance for Expected Credit Losses and Sales Allowances (Details) - Accumulated impairment - Trade accounts receivable - CAD ($)
$ in Millions
12 Months Ended
Mar. 29, 2026
Mar. 30, 2025
Trade And Other Current Receivables [Line Items]    
Financial assets at beginning of period $ (2.5) $ (2.7)
Losses recognized (16.3) (0.7)
Amounts settled or written off during the year 0.1 0.9
Financial assets at end of period (18.7) (2.5)
Expected credit loss    
Trade And Other Current Receivables [Line Items]    
Financial assets at beginning of period (2.2) (2.1)
Losses recognized (16.4) (0.2)
Amounts settled or written off during the year 0.1 0.1
Financial assets at end of period (18.5) (2.2)
Sales allowances    
Trade And Other Current Receivables [Line Items]    
Financial assets at beginning of period (0.3) (0.6)
Losses recognized 0.1 (0.5)
Amounts settled or written off during the year 0.0 0.8
Financial assets at end of period $ (0.2) $ (0.3)