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Warranty reserve - Schedule of Activity in Warranty Reserve (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 28, 2023
Oct. 29, 2022
Oct. 28, 2023
Oct. 29, 2022
Movement in Standard Product Warranty Accrual [Roll Forward]        
Balance at beginning of period $ 42.9 $ 38.5 $ 40.8 $ 36.0
Warranty expense 3.5 4.1 11.6 12.2
Utilized (3.1) (3.0) (9.1) (8.6)
Balance at end of period $ 43.3 $ 39.6 $ 43.3 $ 39.6