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Fair Value Measurements - Additional Information (Details)
3 Months Ended 6 Months Ended
Aug. 01, 2020
USD ($)
Aug. 01, 2020
USD ($)
Aug. 03, 2019
USD ($)
Apr. 04, 2020
USD ($)
Feb. 01, 2020
USD ($)
Fair Value Disclosures [Abstract]          
Securities with maturity dates within one year or less $ 9,700,000 $ 9,700,000      
Securities with maturity dates over one year and less than two years 11,000,000.0 11,000,000.0      
Goodwill [Line Items]          
Fair value of WHBM trademark 6,000,000 6,000,000      
Fair value of long-lived assets at retail stores 89,819,000 89,819,000      
Goodwill 16,360,000 16,360,000 $ 96,774,000   $ 96,774,000
Goodwill and intangible impairment   113,200,000      
Impairment of long lived assets   18,500,000      
Right of use asset impairment and write-off 800,000 3,236,000 0    
Chico's Reporting Unit          
Goodwill [Line Items]          
Fair value of goodwill       $ 16,400,000  
Goodwill 16,360,000 16,360,000 36,400,000   36,403,000
White House Black Market Reporting Unit          
Goodwill [Line Items]          
Fair value of goodwill       0  
Goodwill $ 0 $ 0 60,400,000   60,371,000
Tradename          
Goodwill [Line Items]          
Fair value of goodwill       $ 6,000,000.0  
Goodwill     $ 34,000,000   $ 34,000,000.0
Minimum | Weighted-average cost of capital          
Goodwill [Line Items]          
Long lived asset measurement input 0.095 0.095      
Minimum | Weighted-average cost of capital | Tradename          
Goodwill [Line Items]          
Measurement input 0.11 0.11      
Minimum | Long-term revenue growth rate | Tradename          
Goodwill [Line Items]          
Measurement input (0.025) (0.025)      
Long lived asset measurement input (0.10) (0.10)      
Maximum | Weighted-average cost of capital          
Goodwill [Line Items]          
Long lived asset measurement input 0.115 0.115      
Maximum | Weighted-average cost of capital | Tradename          
Goodwill [Line Items]          
Measurement input 0.13 0.13      
Maximum | Long-term revenue growth rate | Tradename          
Goodwill [Line Items]          
Measurement input 0.00 0.00      
Long lived asset measurement input 0.15 0.15