Earnings (loss) per common share (EPS) - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	May 01, 2021	May 02, 2020
EPS – basic
Net income (loss) attributable to common shareholders	$ 129.8	$ (205.3)
Add: Dividends on Preferred Shares	8.6	0.0
Numerator for diluted EPS	$ 138.4	$ (205.3)
EPS – diluted
Basic weighted average common shares outstanding (shares)	52.1	51.8
Plus: Dilutive effect of share awards	1.9	0.0
Plus: Dilutive effect of Preferred Shares	8.0	0.0
Diluted weighted average common shares outstanding (shares)	62.0	51.8
EPS – diluted (usd per share)	$ 2.23	$ (3.96)