Goodwill and 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		May 02, 2020		May 04, 2019		Aug. 03, 2019
Finite-Lived Intangible Assets [Line Items]
Income valuation approach (percent)				75.00%	75.00%				75.00%
Market valuation approach (percent)				25.00%	25.00%				25.00%
Impairment of goodwill							$ 148.9		$ 115.1		$ 115.1
Impairment of intangible assets (excluding goodwill)		$ 41.3	[1]		$ 25.0	[1]	88.2	[1]	25.0	[1]	25.0
Impairment of goodwill, nondeductible	[1]	$ 85.5			$ 115.1		$ 148.9		$ 115.1
Income tax benefit											$ 6.0
Effective tax rate (percent)		(0.90%)					(1.20%)				26.00%
ANN
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill		$ 15.0		$ 54.9
Justice
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill		70.5		8.5
Justice | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets (excluding goodwill)		7.8		35.0
Justice | Franchise rights
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets (excluding goodwill)		5.0		0.9			$ 5.9
Ann Taylor | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets (excluding goodwill)		17.7		$ 10.0
Loft
Finite-Lived Intangible Assets [Line Items]
Percentage of fair value in excess of carrying amount				14.00%
Loft | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets (excluding goodwill)		7.8
Catherines
Finite-Lived Intangible Assets [Line Items]
Income valuation approach (percent)					100.00%				100.00%
Impairment of goodwill					$ 49.3
Catherines | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets (excluding goodwill)		$ 3.0		$ 1.0					$ 2.0
Lane Bryant
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill					$ 65.8
Lane Bryant | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets (excluding goodwill)									$ 23.0
Premium Fashion
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	[2]						140.4
Kids Fashion
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	[3]						$ 8.5

[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.

[2] ^(a) Net of accumulated impairment losses of $569.3 million and $428.9 million for the Premium Fashion segment as of May 2, 2020 and August 3, 2019, respectively.

[3] ^(b) Net of accumulated impairment losses of $169.4 million and $160.9 million for the Kids Fashion segment as of May 2, 2020 and August 3, 2019, respectively.