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BANK INDEBTEDNESS AND LONG-TERM DEBT - Narrative (Details) € in Thousands, ฿ in Thousands, £ in Thousands, $ in Thousands, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2024 CAD ($) | Mar. 31, 2024 EUR (€) | Mar. 31, 2024 USD ($) | Mar. 31, 2024 THB (฿) | Mar. 31, 2024 GBP (£) | Mar. 31, 2024 AUD ($) | Oct. 05, 2023 CAD ($) | Mar. 31, 2023 CAD ($)
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Long-term debt | $ 1,171,972,000 |  |  |  |  |  |  | $ 1,155,786,000
Letters of credit | 171,065,000 |  |  |  |  |  |  | 192,508,000
Current borrowings | 4,060,000 |  |  |  |  |  |  | 5,824,000
Credit Facility |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Utilized amount | 703,984,000 |  |  |  |  |  |  |
Letters of credit | $ 12,000 |  |  |  |  |  |  | 48,000
Credit Facility | Bottom of range |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Letters of credit usage fee, percentage | 1.45% | 1.45% | 1.45% | 1.45% | 1.45% | 1.45% |  |
Borrowings usage fee, percentage | 0.97% | 0.97% | 0.97% | 0.97% | 0.97% | 0.97% |  |
Standby fee, percentage | 0.29% | 0.29% | 0.29% | 0.29% | 0.29% | 0.29% |  |
Credit Facility | Bottom of range | Prime Rate |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis | 0.45% | 0.45% | 0.45% | 0.45% | 0.45% | 0.45% |  |
Credit Facility | Bottom of range | SOFR, EURIBOR or SONIA Rate |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis | 1.45% | 1.45% | 1.45% | 1.45% | 1.45% | 1.45% |  |
Credit Facility | Top of range |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Letters of credit usage fee, percentage | 3.00% | 3.00% | 3.00% | 3.00% | 3.00% | 3.00% |  |
Borrowings usage fee, percentage | 2.00% | 2.00% | 2.00% | 2.00% | 2.00% | 2.00% |  |
Standby fee, percentage | 0.60% | 0.60% | 0.60% | 0.60% | 0.60% | 0.60% |  |
Credit Facility | Top of range | Prime Rate |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis | 2.00% | 2.00% | 2.00% | 2.00% | 2.00% | 2.00% |  |
Credit Facility | Top of range | SOFR, EURIBOR or SONIA Rate |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis | 3.00% | 3.00% | 3.00% | 3.00% | 3.00% | 3.00% |  |
Credit Facility | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Long-term debt | $ 703,972,000 |  |  |  |  |  |  | 691,906,000
Secured Committed Revolving Line of Credit |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | $ 750,000 |
Secured Term Credit Facility |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | $ 300,000 |
Other Facilities , Including Bank Indebtedness | Bottom of range |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Borrowings, interest rate | 0.03% | 0.03% | 0.03% | 0.03% | 0.03% | 0.03% |  |
Other Facilities , Including Bank Indebtedness | Top of range |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Borrowings, interest rate | 8.45% | 8.45% | 8.45% | 8.45% | 8.45% | 8.45% |  |
Other Facilities , Including Bank Indebtedness | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Long-term debt | $ 6,735,000 |  |  |  |  |  |  |
Letters of credit | 376,000 |  |  |  |  |  |  | 158,000
Additional credit facilities available | 108,058,000 |  |  |  |  |  |  |
Euro Credit Facility | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Additional credit facilities available | € |  | € 40,575 |  |  |  |  |  |
U.S. Credit Facility | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Additional credit facilities available |  |  | $ 24,000 |  |  |  |  |
Thai Baht Credit Facility | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Additional credit facilities available | ฿ |  |  |  | ฿ 120,000 |  |  |  |
British Pound Sterling Credit Facility | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Additional credit facilities available | £ |  |  |  |  | £ 5,000 |  |  |
Yuan Credit Facility | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Additional credit facilities available | £ |  |  |  |  | £ 5,000 |  |  |
Australian Credit Facility | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Additional credit facilities available |  |  |  |  |  | $ 150 |  |
Canadian Credit Facility | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Additional credit facilities available | 2,189,000 |  |  |  |  |  |  |
Other Facilities | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Long-term debt | 2,299,000 |  |  |  |  |  |  | 202,000
Senior Notes |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Principal amount | $ 350,000 |  |  |  |  |  |  |
Borrowings, interest rate | 4.125% | 4.125% | 4.125% | 4.125% | 4.125% | 4.125% |  |
Borrowings, redemption price, percentage | 101.00% | 101.00% | 101.00% | 101.00% | 101.00% | 101.00% |  |
Borrowing costs incurred | $ 8,100 |  |  |  |  |  |  |
Senior Notes | Gross carrying amount |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |
Long-term debt | $ 474,075,000 |  |  |  |  |  |  | $ 472,990,000

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