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TREASURY STOCK (Details)
12 Months Ended 14 Months Ended
Feb. 02, 2018
USD ($)
shares
Feb. 01, 2018
USD ($)
dealer
Mar. 31, 2020
USD ($)
shares
Mar. 31, 2019
USD ($)
shares
Mar. 31, 2018
USD ($)
shares
Mar. 31, 2019
$ / shares
shares
Jan. 16, 2018
shares
Oct. 24, 2017
shares
May 19, 2015
shares
Equity, Class of Treasury Stock [Line Items]                  
Stock authorized to repurchase under stock repurchase program (in shares)             25,000,000    
Shares repurchased during the period, value | $     $ 175,000,000 $ 14,468,000 $ 501,324,000        
Restricted stock units                  
Equity, Class of Treasury Stock [Line Items]                  
Shares repurchased during the period (in shares)     519,241 451,683 408,097        
Shares repurchased during the period, value | $     $ 11,900,000 $ 11,900,000 $ 13,600,000        
Dealer one                  
Equity, Class of Treasury Stock [Line Items]                  
Shares repurchased during the period, value | $ $ 150,000,000                
Dealer two                  
Equity, Class of Treasury Stock [Line Items]                  
Shares repurchased during the period, value | $ $ 150,000,000                
Line of credit | Senior secured revolving credit facility                  
Equity, Class of Treasury Stock [Line Items]                  
Amount outstanding under credit facility | $   $ 300,000,000 $ 450,000,000            
Share repurchase program, May 2015                  
Equity, Class of Treasury Stock [Line Items]                  
Stock authorized to repurchase under stock repurchase program (in shares)                 20,000,000
Shares repurchased during the period (in shares) 970,650       6,773,438        
Shares repurchased during the period, value | $ $ 27,600,000       $ 227,600,000        
Common stock available to be purchased (in shares)         0        
ASR Agreements                  
Equity, Class of Treasury Stock [Line Items]                  
Shares repurchased during the period (in shares)       3,679,947 7,387,862 11,067,809      
Shares repurchased during the period, value | $   $ 300,000,000   $ 96,800,000          
Number of third-party financial institutions (the Dealers) | dealer   2              
Shares repurchased during the period from each of the dealers (in shares) 3,693,931                
Shares repurchased as percentage of total expected to be repurchased 70.00%                
Average cost per share (in dollars per share) | $ / shares           $ 27.11      
Share repurchase program, October 2017                  
Equity, Class of Treasury Stock [Line Items]                  
Stock authorized to repurchase under stock repurchase program (in shares)               25,000,000  
Shares repurchased during the period (in shares) 6,417,212   7,116,159 543,251          
Shares repurchased during the period, value | $ $ 182,400,000   $ 175,000,000.0 $ 14,500,000          
Common stock available to be purchased (in shares)     7,243,431