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LONG-TERM DEBT (Details) - USD ($)
$ in Thousands
Dec. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Disclosure of detailed information about borrowings [line items]        
Principal amount $ 669,000   $ 630,000  
Revolving long-term bank credit facility, interest at variable U.S. LIBOR-based interest rate plus a spread ranging from 1% to 2%        
Disclosure of detailed information about borrowings [line items]        
Principal amount 69,000   30,000  
Maximum borrowing capacity 1,000,000     $ 1,000,000
Amount committed against facility to cover various letters of credit $ 13,400   14,600  
Revolving long-term bank credit facility, interest at variable U.S. LIBOR-based interest rate plus a spread ranging from 1% to 2% | Effective interest rate        
Disclosure of detailed information about borrowings [line items]        
Interest rate 3.40%      
Revolving long-term bank credit facility, interest at variable U.S. LIBOR-based interest rate plus a spread ranging from 1% to 2% | Minimum        
Disclosure of detailed information about borrowings [line items]        
Basis spread on variable rate 1.00%      
Revolving long-term bank credit facility, interest at variable U.S. LIBOR-based interest rate plus a spread ranging from 1% to 2% | Maximum        
Disclosure of detailed information about borrowings [line items]        
Basis spread on variable rate 2.00%      
Term loan, interest at variable U.S. LIBOR-based interest rate plus a spread ranging from 1% to 2%        
Disclosure of detailed information about borrowings [line items]        
Principal amount $ 300,000   300,000  
Maximum borrowing capacity   $ 300,000    
Term loan, interest at variable U.S. LIBOR-based interest rate plus a spread ranging from 1% to 2% | Effective interest rate        
Disclosure of detailed information about borrowings [line items]        
Interest rate 2.80%      
Term loan, interest at variable U.S. LIBOR-based interest rate plus a spread ranging from 1% to 2% | Minimum | LIBOR        
Disclosure of detailed information about borrowings [line items]        
Basis spread on variable rate 1.00%      
Term loan, interest at variable U.S. LIBOR-based interest rate plus a spread ranging from 1% to 2% | Maximum        
Disclosure of detailed information about borrowings [line items]        
Basis spread on variable rate 2.00%      
Notes payable, interest at fixed and variable rates        
Disclosure of detailed information about borrowings [line items]        
Principal amount $ 300,000      
Notes payable, interest at fixed rate of 2.70%, payable semi-annually        
Disclosure of detailed information about borrowings [line items]        
Interest rate 2.70%      
Principal amount $ 100,000   100,000  
Notes payable, interest at fixed rate of 2.70%, payable semi-annually | Effective interest rate        
Disclosure of detailed information about borrowings [line items]        
Interest rate 2.70%      
Notes payable, interest at variable U.S. LIBOR-based interest rate plus a spread of 1.53% payable quarterly        
Disclosure of detailed information about borrowings [line items]        
Principal amount $ 50,000   50,000  
Notes payable, interest at variable U.S. LIBOR-based interest rate plus a spread of 1.53% payable quarterly | Effective interest rate        
Disclosure of detailed information about borrowings [line items]        
Interest rate 2.70%      
Notes payable, interest at variable U.S. LIBOR-based interest rate plus a spread of 1.53% payable quarterly | LIBOR        
Disclosure of detailed information about borrowings [line items]        
Basis spread on variable rate 1.53%      
Notes payable, interest at fixed rate of 2.91%, payable semi-annually        
Disclosure of detailed information about borrowings [line items]        
Interest rate 2.91%      
Principal amount $ 100,000   100,000  
Notes payable, interest at fixed rate of 2.91%, payable semi-annually | Effective interest rate        
Disclosure of detailed information about borrowings [line items]        
Interest rate 2.90%      
Notes payable, interest at variable U.S. LIBOR-based interest rate plus a spread of 1.57% payable quarterly        
Disclosure of detailed information about borrowings [line items]        
Principal amount $ 50,000   $ 50,000  
Notes payable, interest at variable U.S. LIBOR-based interest rate plus a spread of 1.57% payable quarterly | Effective interest rate        
Disclosure of detailed information about borrowings [line items]        
Interest rate 2.90%      
Notes payable, interest at variable U.S. LIBOR-based interest rate plus a spread of 1.57% payable quarterly | LIBOR        
Disclosure of detailed information about borrowings [line items]        
Basis spread on variable rate 1.57%