Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Income Statement [Abstract]
Sales	$ 1,300.3	$ 1,187.7	$ 3,040.4	$ 3,983.8
Cost of sales	(863.8)	(818.6)	(2,176.0)	(2,652.2)
Restructuring charges - cost of sales	(2.0)	(1.4)	(1.4)	(5.8)
Gross margin	434.5	367.7	863.0	1,325.8
Selling, general and administrative expenses	(389.3)	(398.4)	(1,013.6)	(1,285.0)
Restructuring charges	(3.6)	(9.2)	(45.2)	(59.4)
Asset impairments	(1.5)	0.0	(158.1)	(47.7)
Other operating income (loss)	(0.4)	0.0	4.3	1.4
Operating income (loss)	39.7	(39.9)	(349.6)	(64.9)
Interest expense, net	(9.1)	(8.6)	(25.6)	(27.9)
Other non-operating income, net	0.0	7.0	0.3	7.5
Income (loss) before income taxes	30.6	(41.5)	(374.9)	(85.3)
Income taxes	(21.3)	6.0	105.4	3.7
Net income (loss)	9.3	(35.5)	(269.5)	(81.6)
Dividends on redeemable convertible preferred shares	(8.4)	(8.2)	(24.9)	(24.6)
Net income (loss) attributable to common shareholders	$ 0.9	$ (43.7)	$ (294.4)	$ (106.2)
Earnings (loss) per common share:
Earnings per common share: basic (usd per share)	$ 0.02	$ (0.84)	$ (5.67)	$ (2.05)
Earnings per common share: diluted (usd per share)	$ 0.02	$ (0.84)	$ (5.67)	$ (2.05)
Weighted average common shares outstanding:
Weighted average common shares outstanding: basic (shares)	52.1	51.8	51.9	51.7
Weighted average common shares outstanding: diluted (shares)	53.4	51.8	51.9	51.7