Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
Income Statement [Abstract]
Sales	$ 5,226.9	$ 6,137.1	$ 6,247.1
Cost of sales	(3,493.0)	(3,904.2)	(4,024.1)
Restructuring charges - cost of sales	(1.4)	(9.2)	(62.2)
Gross margin	1,732.5	2,223.7	2,160.8
Selling, general and administrative expenses	(1,587.4)	(1,918.2)	(1,985.1)
Credit transaction, net	0.0	0.0	(167.4)
Restructuring charges	(46.2)	(69.9)	(63.7)
Asset impairments	(159.0)	(47.7)	(735.4)
Other operating income (loss)	2.4	(29.6)	26.2
Operating income (loss)	(57.7)	158.3	(764.6)
Interest expense, net	(32.0)	(35.6)	(39.7)
Other non-operating income, net	0.0	7.0	1.7
Income (loss) before income taxes	(89.7)	129.7	(802.6)
Income taxes	74.5	(24.2)	145.2
Net income (loss)	(15.2)	105.5	(657.4)
Dividends on redeemable convertible preferred shares	(33.5)	(32.9)	(32.9)
Net income (loss) attributable to common shareholders	$ (48.7)	$ 72.6	$ (690.3)
Earnings (loss) per common share:
Basic (usd per share)	$ (0.94)	$ 1.40	$ (12.62)
Diluted (usd per share)	$ (0.94)	$ 1.40	$ (12.62)
Weighted average common shares outstanding:
Basic (in shares)	52.0	51.7	54.7
Diluted (in shares)	52.0	51.8	54.7