Business Organization and Summary of Significant Accounting Policies - Goodwill and Accounting for the Impairment of Long-lived Assets (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jan. 30, 2021	May 02, 2020	Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
Liability for Catastrophe Claims [Line Items]
Impairment charges	$ 0	$ 68,400,000	$ 80,414,000
Goodwill and intangible impairment charges			114,344,000	$ 0	$ 0
Impairment of long lived assets			29,700,000
Impairment charges			34,500,000	3,300,000	13,300,000
Impairment expense recorded			19,100,000
Leasehold improvements	19,100,000		19,100,000
Capitalized Implementation Costs
Liability for Catastrophe Claims [Line Items]
Impairment of long lived assets			12,100,000
Leasehold improvements	3,200,000		3,200,000
Chico's Reporting Unit
Liability for Catastrophe Claims [Line Items]
Impairment charges		20,000,000.0	20,043,000
WHBM Reporting Unit
Liability for Catastrophe Claims [Line Items]
Impairment charges		60,400,000	60,371,000
WHBM Trademark
Liability for Catastrophe Claims [Line Items]
Goodwill and intangible impairment charges		28,000,000.0
Impairment of long lived assets	1,000,000.0
Chico's Franchise Rights
Liability for Catastrophe Claims [Line Items]
Goodwill and intangible impairment charges		$ 4,800,000
Impairment of long lived assets	$ 200,000
Cost of Goods | Capitalized Implementation Costs
Liability for Catastrophe Claims [Line Items]
Impairment of long lived assets			24,000,000.0
SG&A Expenses
Liability for Catastrophe Claims [Line Items]
Impairment of long lived assets			8,900,000
SG&A Expenses | Capitalized Implementation Costs
Liability for Catastrophe Claims [Line Items]
Impairment of long lived assets			$ 10,400,000
Retail Fleet Optimization Plan | Cost of Goods
Liability for Catastrophe Claims [Line Items]
Impairment of long lived assets					9,400,000
Impairment charges				$ 0	$ 9,434,000