Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended					9 Months Ended				12 Months Ended
	May 02, 2020		Feb. 01, 2020	May 04, 2019	[1]	May 02, 2020		May 04, 2019		Aug. 03, 2019
Goodwill [Line Items]
Intangible assets not subject to amortization	$ 174.7					$ 174.7				$ 262.9
Intangible assets subject to amortization	62.1					62.1				100.3
Accumulated amortization	(60.8)					(60.8)				(86.6)
Intangible assets subject to amortization, net	1.3					1.3				13.7
Total intangible assets, gross	236.8					236.8				363.2
Total intangible assets, net	176.0					176.0				276.6
Impairment of intangible assets (excluding goodwill)	41.3	[1]		$ 25.0		88.2	[1]	$ 25.0	[1]	25.0
Proprietary technology
Goodwill [Line Items]
Intangible assets subject to amortization	4.8					4.8				4.8
Accumulated amortization	(4.8)					(4.8)				(4.8)
Intangible assets subject to amortization, net	0.0					0.0				0.0
Customer relationships
Goodwill [Line Items]
Intangible assets subject to amortization	52.0					52.0				52.0
Accumulated amortization	(50.7)					(50.7)				(46.7)
Intangible assets subject to amortization, net	1.3					1.3				5.3
Favorable leases
Goodwill [Line Items]
Intangible assets subject to amortization	0.0					0.0				38.2
Accumulated amortization	0.0					0.0				(29.8)
Intangible assets subject to amortization, net	0.0					0.0				8.4
Trade names
Goodwill [Line Items]
Intangible assets subject to amortization	5.3					5.3				5.3
Accumulated amortization	(5.3)					(5.3)				(5.3)
Intangible assets subject to amortization, net	0.0					0.0				0.0
Brand and trade names
Goodwill [Line Items]
Intangible assets not subject to amortization	169.7					169.7				252.0
Brand and trade names | Ann Taylor
Goodwill [Line Items]
Intangible assets, accumulated impairment loss						252.7
Impairment of intangible assets (excluding goodwill)	17.7		$ 10.0
Brand and trade names | Loft
Goodwill [Line Items]
Intangible assets, accumulated impairment loss						424.4
Impairment of intangible assets (excluding goodwill)	7.8
Brand and trade names | Lane Bryant
Goodwill [Line Items]
Intangible assets, accumulated impairment loss						243.5
Impairment of intangible assets (excluding goodwill)								23.0
Brand and trade names | Catherines
Goodwill [Line Items]
Intangible assets, accumulated impairment loss						10.0
Impairment of intangible assets (excluding goodwill)	3.0		1.0					$ 2.0
Brand and trade names | Justice
Goodwill [Line Items]
Intangible assets, accumulated impairment loss						59.4
Impairment of intangible assets (excluding goodwill)	7.8		35.0
Franchise rights
Goodwill [Line Items]
Intangible assets not subject to amortization	5.0					5.0				$ 10.9
Franchise rights | Justice
Goodwill [Line Items]
Impairment of intangible assets (excluding goodwill)	$ 5.0		$ 0.9			$ 5.9

[1] For the three and nine months ended May 2, 2020 and May 4, 2019, respectively, the maurices and Dressbarn businesses were classified as discontinued operations within the condensed consolidated financial statements. As a result, shared expenses of $18.3 million for the nine months ended May 2, 2020, as well as $47.8 million and $137.2 million for the three and nine months ended May 4, 2019, which were previously allocated to maurices and Dressbarn have been reallocated to the remaining operating units.