Business Organization and Summary of Significant Accounting Policies - Goodwill and Accounting for the Impairment of Long-lived Assets (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	May 02, 2020	Jan. 28, 2023	Jan. 29, 2022	Jan. 30, 2021
Liability for Catastrophe Claims [Line Items]
Impairment of long lived assets		$ 1.3	$ 2.9	$ 34.5
Impairment charges		0.2	1.2
Capitalized computer costs		$ 0.5	$ 1.6	12.1
Leasehold improvements				19.1
Capitalized Implementation Costs
Liability for Catastrophe Claims [Line Items]
Leasehold improvements				3.2
Chico's reporting unit
Liability for Catastrophe Claims [Line Items]
Impairment charges	$ 20.0
WHBM reporting unit
Liability for Catastrophe Claims [Line Items]
Impairment charges	60.4
WHBM trademark
Liability for Catastrophe Claims [Line Items]
Indefinite-lived intangible assets	28.0			1.0
Chico's franchise rights
Liability for Catastrophe Claims [Line Items]
Indefinite-lived intangible assets	$ 4.8			0.2
SG&A Expenses
Liability for Catastrophe Claims [Line Items]
Impairment of long lived assets				10.4
Cost of Sales
Liability for Catastrophe Claims [Line Items]
Impairment of long lived assets				$ 24.0