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Supplemental cash flow information - Reconciliation of liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Changes from financing cash flows |  |
Repayment of long-term debt and financing fees | $ (322,378) | $ (12,280)
Net proceeds on issue of long-term debt | 585,393 | 0
Payment of lease obligations | (141,247) | (118,159)
Long term debt |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Outstanding at beginning of period | 2,141,801 |
Changes from financing cash flows |  |
Repayment of long-term debt and financing fees | (322,378) |
Net proceeds on issue of long-term debt | 585,393 |
Payment of lease obligations | 0 |
Total changes from financing cash flows | 263,015 |
Liability-related other changes |  |
Finance costs | 10,119 |
New lease obligations | 0 |
Other | 0 |
Total liability-related other changes | 10,119 |
Outstanding at end of period | 2,414,935 | 2,141,801
Lease obligations |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Outstanding at beginning of period | 872,120 |
Changes from financing cash flows |  |
Repayment of long-term debt and financing fees | 0 |
Net proceeds on issue of long-term debt | 0 |
Payment of lease obligations | (141,247) |
Total changes from financing cash flows | (141,247) |
Liability-related other changes |  |
Finance costs | 0 |
New lease obligations | 89,349 |
Other | (2,017) |
Total liability-related other changes | 87,332 |
Outstanding at end of period | $ 818,205 | $ 872,120

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