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Supplemental cash flow information - Reconciliation of Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Changes from financing cash flows |  |
Repayment of long-term debt and financing fees | $ (62,381) | $ (295,917)
Repayment on Geismar 3 construction facility | (173,000) | 0
Payment of lease obligations | (101,054) | (106,834)
Proceeds from other limited recourse debt | 25,161 | 12,839
Long term debt |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Outstanding at beginning of period | 2,363,372 |
Changes from financing cash flows |  |
Repayment of long-term debt and financing fees | (57,563) |
Repayment on Geismar 3 construction facility | (173,000) |
Payment of lease obligations | 0 |
Proceeds from other limited recourse debt | 25,161 |
Total changes from financing cash flows | (205,402) |
Liability-related other changes |  |
Finance costs | 3,565 |
New lease obligations | 0 |
Other | (3,343) |
Total liability-related other changes | 222 |
Outstanding at end of period | 2,158,192 | 2,363,372
Lease obligations |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Outstanding at beginning of period | 722,234 |
Changes from financing cash flows |  |
Repayment of long-term debt and financing fees | 0 |
Repayment on Geismar 3 construction facility | 0 |
Payment of lease obligations | (101,054) |
Proceeds from other limited recourse debt | 0 |
Total changes from financing cash flows | (101,054) |
Liability-related other changes |  |
Finance costs | 0 |
New lease obligations | 97,673 |
Other | (1,752) |
Total liability-related other changes | 95,921 |
Outstanding at end of period | $ 717,101 | $ 722,234

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