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Subsequent events (Details) - 2023 Restructuring Plan
$ in Millions
12 Months Ended
May 03, 2023
USD ($)
employee
Sep. 30, 2023
Forecast    
Subsequent Event [Line Items]    
Restructuring and related cost, number of positions eliminated, period percent   25.00%
Subsequent events    
Subsequent Event [Line Items]    
Restructuring and related cost, expected number of positions eliminated | employee 270  
Subsequent events | Minimum    
Subsequent Event [Line Items]    
Restructuring and related cost, expected cost $ 9  
Subsequent events | Maximum    
Subsequent Event [Line Items]    
Restructuring and related cost, expected cost $ 11