Earnings (loss) per common share ("EPS") - Schedule of Basic Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Feb. 01, 2025	Feb. 03, 2024	Jan. 28, 2023
Numerator:
Net (loss) income attributable to common shareholders	$ (35.6)	$ 775.9	$ 342.2
Weighted average common shares outstanding (in shares)	44.1	44.9	46.6
EPS – basic (usd per share)	$ (0.81)	$ 17.28	$ 7.34