Earnings (loss) per common share ("EPS") - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 29, 2022	Jan. 30, 2021	Feb. 01, 2020
EPS – basic
Net income (loss) attributable to common shareholders	$ 735.4	$ (48.7)	$ 72.6
Weighted average common shares outstanding (in shares)	52.5	52.0	51.7
Earnings (loss) per common share: basic (usd per share)	$ 14.01	$ (0.94)	$ 1.40
Add: Dividends on preferred shares	$ 34.5	$ 0.0	$ 0.0
EPS – diluted
Numerator for diluted EPS	$ 769.9	$ (48.7)	$ 72.6
Dilutive effect of share awards (in shares)	2.5	0.0	0.1
Dilutive effect of preferred shares (in shares)	8.0	0.0	0.0
Diluted weighted average number of common shares outstanding	63.0	52.0	51.8
Earnings (loss) per common share: diluted (usd per share)	$ 12.22	$ (0.94)	$ 1.40
Performance Shares
EPS – diluted
Dilutive effect of share awards (in shares)	2.0