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LONG-TERM DEBT (Details) - USD ($) $ in Thousands | Dec. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2017
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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% |  |  |

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