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STOCKHOLDERS' EQUITY (Details)
 12 Months Ended
Mar. 31, 2024
USD ($)
class_of_stock
vote
$ / shares
shares
Mar. 31, 2023
USD ($)
$ / shares
shares
Mar. 31, 2022
USD ($)
$ / shares
shares
Jul. 31, 2021
USD ($)
Mar. 31, 2021
shares
Class of Stock [Line Items]          
Number of classes of common stock | class_of_stock 2        
Conversion ratio of common stock 1        
Dividends outstanding | $ $ 22,883,000 $ 18,608,000      
Stock repurchase program, authorized amount | $       $ 500,000,000  
Stock repurchase program, remaining authorized repurchase amount | $ $ 457,700,000        
Treasury stock acquired, average cost per share (in dollars per share) | $ / shares $ 103.68 $ 85.74 $ 94.35    
Class A          
Class of Stock [Line Items]          
Common stock voting rights, number of votes per share | vote 1        
Shares issued of common stock (in shares) 52,348,511 50,638,924      
Number of common shares outstanding (in shares) 52,348,511 50,638,924      
Stock repurchased and retired during period, shares (in shares) 240,666,000 677,287 3,272,399    
Stock repurchased and retired during period, value | $ $ 24,952,000 $ 58,073,000 $ 308,746,000    
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) 16,746,676 18,048,345      
Number of common shares outstanding (in shares) 16,746,676 18,048,345      
Stock repurchased and retired during period, shares (in shares) 772,794,000 507,511,000 455,402,000    
Stock repurchased and retired during period, value | $ $ 70,713,000 $ 42,283,000 $ 33,700,000    
Director | Class A          
Class of Stock [Line Items]          
Shares issued to non-employee directors (in shares) 6,609 6,739      
Investor | Class A          
Class of Stock [Line Items]          
Shares issued of common stock (in shares) 52,283,576 50,580,598      
Common stock | Class A          
Class of Stock [Line Items]          
Shares issued to non-employee directors (in shares) 6,609 6,739 6,512    
Shares converted from Class B to Class A (in shares) 1,942,078 1,455,908      
Number of common shares outstanding (in shares) 52,348,511 50,638,924 49,853,564   51,245,442
Common stock | Class B          
Class of Stock [Line Items]          
Number of common shares outstanding (in shares) 16,746,676 18,048,345 17,649,555   16,951,696
Director | Class A          
Class of Stock [Line Items]          
Shares issued of common stock (in shares) 64,935 58,326