Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Feb. 01, 2020	Feb. 02, 2019	Feb. 01, 2020	Feb. 02, 2019	Aug. 03, 2019
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 250.1		$ 250.1		$ 313.5
Income Valuation Approach		75.00%		75.00%
Market Valuation Approach		25.00%		25.00%
Impairment of Intangible Assets (Excluding Goodwill)	[1]	$ 46.9	$ 0.0	$ 46.9	$ 0.0
Finite-lived intangible assets, gross carrying amount		62.1		62.1		100.3
Accumulated Amortization		(59.5)		(59.5)		(86.6)
Finite-lived intangible assets, net		2.6		2.6		13.7
Indefinite-lived intangible assets		216.0		216.0		262.9
Gross Carrying Amount		278.1		278.1		363.2
Net		218.6		218.6		276.6
Impairment of goodwill				(63.4)	0.0
Impairment of goodwill	[1]	63.4	$ 0.0	63.4	$ 0.0
Proprietary technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		4.8		4.8		4.8
Accumulated Amortization		(4.8)		(4.8)		(4.8)
Finite-lived intangible assets, net		0.0		0.0		0.0
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		52.0		52.0		52.0
Accumulated Amortization		(49.4)		(49.4)		(46.7)
Finite-lived intangible assets, net		2.6		2.6		5.3
Favorable leases
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		0.0		0.0		38.2
Accumulated Amortization		0.0		0.0		(29.8)
Finite-lived intangible assets, net		0.0		0.0		8.4
Trade names
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		5.3		5.3		5.3
Accumulated Amortization		(5.3)		(5.3)		(5.3)
Finite-lived intangible assets, net		0.0		0.0		0.0
Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		206.0		206.0		252.0
Franchise Rights
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		10.0		10.0		10.9
Justice
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill				(8.5)
Justice | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Impaired, Accumulated Impairment Loss				51.6
Impairment of Intangible Assets (Excluding Goodwill)				35.0
Justice | Franchise Rights
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Impaired, Accumulated Impairment Loss				0.9
Catherines | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Impaired, Accumulated Impairment Loss				7.0
Impairment of Intangible Assets (Excluding Goodwill)				1.0
Premium Fashion
Finite-Lived Intangible Assets [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss		483.8		483.8		428.9
Goodwill	[2]	250.1		250.1		305.0
Impairment of goodwill	[2]			(54.9)
Kids Fashion
Finite-Lived Intangible Assets [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss		169.4		169.4		160.9
Goodwill	[3]	$ 0.0		0.0		$ 8.5
Impairment of goodwill	[3]			$ (8.5)
Loft
Finite-Lived Intangible Assets [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount		14.00%		14.00%
Loft | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Impaired, Accumulated Impairment Loss				$ 416.6
Lane Bryant | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Impaired, Accumulated Impairment Loss				243.5
Ann Taylor | Brand and trade names
Finite-Lived Intangible Assets [Line Items]
Intangible assets, Impaired, Accumulated Impairment Loss				235.0
Impairment of Intangible Assets (Excluding Goodwill)				10.0
ANN
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill				$ (54.9)

[1] For the three and six months ended February 1, 2020 and February 2, 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 six months ended February 1, 2020, as well as $45.6 million and $89.4 million for the three and six months ended February 2, 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 $483.8 million and $428.9 million for the Premium Fashion segment as of February 1, 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 February 1, 2020 and August 3, 2019, respectively.