v3.20.1
Common Stock and Share-Based Compensation - Summary of Company's Restricted Stock Awards (Detail) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Weighted-Average Grant Date Fair Value      
Share-based Payment Arrangement, Expense, Tax Benefit $ 1.2 $ 4.1 $ 4.2
Restricted Stock      
Shares      
Nonvested shares at beginning of period 807,028    
Granted 2,398,748 969,043 596,412
Vested (479,405)    
Forfeited (663,960)    
Nonvested shares at end of period 2,062,411 807,028  
Weighted-Average Grant Date Fair Value      
Nonvested shares at beginning of period $ 18.30    
Granted 8.05 $ 15.67 $ 24.94
Vested 18.69    
Forfeited 10.62    
Nonvested shares at end of period $ 8.76 $ 18.30  
Share-based Payment Arrangement, Expense $ 8.9 $ 10.7 $ 25.5
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 11.2    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 2 years    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 4.6 $ 16.2 $ 12.5
Performance Shares [Member]      
Shares      
Nonvested shares at beginning of period 287,307    
Granted 1,199,042 257,667 287,670
Vested 0    
Forfeited (351,345)    
Nonvested shares at end of period 1,135,004 287,307  
Weighted-Average Grant Date Fair Value      
Nonvested shares at beginning of period $ 20.33    
Granted 7.95 $ 15.80 $ 25.28
Vested 0    
Forfeited 16.70    
Nonvested shares at end of period $ 8.37 $ 20.33