Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Aug. 01, 2020	Aug. 03, 2019	Aug. 01, 2020	Aug. 03, 2019
Income Statement [Abstract]
Sales	$ 888.0	$ 1,364.4	$ 1,740.1	$ 2,796.1
Cost of sales	(663.9)	(901.3)	(1,312.2)	(1,833.6)
Restructuring charges - cost of sales	0.2	(4.4)	0.6	(4.4)
Gross margin	224.3	458.7	428.5	958.1
Selling, general and administrative expenses	(265.9)	(411.4)	(624.3)	(886.6)
Restructuring charges	(28.9)	(23.4)	(41.6)	(50.2)
Asset impairments	(20.3)	(47.7)	(156.6)	(47.7)
Other operating income, net	1.1	1.4	4.7	1.4
Operating income (loss)	(89.7)	(22.4)	(389.3)	(25.0)
Interest expense, net	(9.4)	(10.1)	(16.5)	(19.3)
Other non-operating income, net	0.2	0.2	0.3	0.5
Income (loss) before income taxes	(98.9)	(32.3)	(405.5)	(43.8)
Income taxes	17.2	(3.8)	126.7	(2.3)
Net income (loss)	(81.7)	(36.1)	(278.8)	(46.1)
Dividends on redeemable convertible preferred shares	(8.3)	(8.2)	(16.5)	(16.4)
Net income (loss) attributable to common shareholders	$ (90.0)	$ (44.3)	$ (295.3)	$ (62.5)
Earnings (loss) per common share:
Earnings per common share: basic (usd per share)	$ (1.73)	$ (0.86)	$ (5.69)	$ (1.21)
Earnings per common share: diluted (usd per share)	$ (1.73)	$ (0.86)	$ (5.69)	$ (1.21)
Weighted average common shares outstanding:
Weighted average common shares outstanding: basic (shares)	52.0	51.7	51.9	51.6
Weighted average common shares outstanding: diluted (shares)	52.0	51.7	51.9	51.6