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STOCKHOLDERS' EQUITY (Details)
 12 Months Ended
May 20, 2020
USD ($)
shares
Mar. 31, 2023
USD ($)
vote
class_of_stock
$ / shares
shares
Mar. 31, 2022
USD ($)
$ / shares
shares
Mar. 31, 2021
USD ($)
$ / shares
shares
Jul. 31, 2021
USD ($)
Mar. 31, 2020
shares
Aug. 18, 2015
Class of Stock [Line Items]              
Number of classes of common stock | class_of_stock   2          
Conversion ratio of common stock             1
Dividends outstanding | $   $ 18,608,000 $ 9,312,000        
Stock repurchase program, authorized amount | $         $ 500,000,000    
Stock repurchase program, remaining authorized repurchase amount | $   $ 482,700,000          
Treasury stock acquired, average cost per share (in dollars per share) | $ / shares   $ 85.74 $ 94.35 $ 64.18      
Class A              
Class of Stock [Line Items]              
Common stock voting rights, number of votes per share | vote   1          
Shares issued to non-employee directors (in shares) 3,000,000            
Net proceeds from offering | $ $ 188,700,000            
Shares issued of common stock (in shares)   50,638,924 49,853,564        
Number of common shares outstanding (in shares)   50,638,924 49,853,564        
Stock repurchased and retired during period, shares (in shares)   677,287,000 3,272,399,000 1,591,995,000      
Stock repurchased and retired during period, value | $   $ 58,073,000 $ 308,746,000 $ 102,173,000      
Class B              
Class of Stock [Line Items]              
Common stock voting rights, number of votes per share | vote   10          
Shares issued of common stock (in shares)   18,048,345 17,649,555        
Number of common shares outstanding (in shares)   18,048,345 17,649,555        
Stock repurchased and retired during period, shares (in shares)   507,511,000 455,402,000 286,730,000      
Stock repurchased and retired during period, value | $   $ 42,283,000 $ 33,700,000 $ 17,810,000      
Director | Class A              
Class of Stock [Line Items]              
Shares issued to non-employee directors (in shares)   6,739 6,512        
Investor | Class A              
Class of Stock [Line Items]              
Shares issued of common stock (in shares)   50,580,598 49,801,577        
Common stock | Class A              
Class of Stock [Line Items]              
Shares issued to non-employee directors (in shares)   6,739 6,512 8,751      
Shares converted from Class B to Class A (in shares)   1,455,908 1,874,009        
Number of common shares outstanding (in shares)   50,638,924 49,853,564 51,245,442   46,178,633  
Common stock | Class B              
Class of Stock [Line Items]              
Number of common shares outstanding (in shares)   18,048,345 17,649,555 16,951,696   19,345,277  
Director | Class A              
Class of Stock [Line Items]              
Shares issued of common stock (in shares)   58,326 51,987