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Share-based compensation - Schedule of Share-Based Compensation Expense and Associated Tax Benefits (Details) - USD ($)
$ in Millions
12 Months Ended
Feb. 03, 2024
Jan. 28, 2023
Jan. 29, 2022
Share-Based Payment Arrangement [Abstract]      
Share-based compensation expense $ 41.1 $ 42.0 $ 45.8
Income tax benefit $ (5.4) $ (5.2) $ (5.9)