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Warranty reserve - Schedule of Activity in Warranty Reserve (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Nov. 01, 2025
Nov. 02, 2024
Nov. 01, 2025
Nov. 02, 2024
Movement in Standard Product Warranty Accrual [Roll Forward]        
Balance at beginning of period $ 35.5 $ 42.3 $ 39.0 $ 43.7
Warranty expense 0.9 1.6 2.0 5.7
Utilized (2.3) (2.8) (6.9) (8.3)
Balance at end of period $ 34.1 $ 41.1 $ 34.1 $ 41.1