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Investment in associate - Narrative (Details) $ in Thousands, t in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($) t | Dec. 31, 2022 USD ($)
Disclosure of associates [line items] |  |
Percentage of sales | 100.00% | 100.00%
Atlas Methanol Company Unlimited |  |
Disclosure of associates [line items] |  |
Annual methanol production facility owned (in tonnes) | t | 1.8 |
Ownership rate | 100.00% |
Gas contract settlement | $ 75,000 | $ 0
Atlas Methanol Company Unlimited | Fixed-price contracts | Methanol | 2005 through 2014 |  |
Disclosure of associates [line items] |  |
Percentage of sales | 50.00% |
Atlas Methanol Company Unlimited | Fixed-price contracts | Methanol | Late 2014 through 2019 |  |
Disclosure of associates [line items] |  |
Percentage of sales | 10.00% |
Atlas Methanol Company Unlimited |  |
Disclosure of associates [line items] |  |
Percentage of ownership interest in associates | 63.10% | 63.10%
Natural gas supply arrangement term | 20 years |
Atlas Methanol Company Unlimited | Cash-generating unit |  |
Disclosure of associates [line items] |  |
Discount rate used in current estimate of value in use | 16.00% |
Atlas Methanol Company Unlimited | Atlas Methanol Company Unlimited |  |
Disclosure of associates [line items] |  |
Gas contract settlement, methanex share | $ 47,000 |
Gas contract settlement, net of tax | $ 31,000 |

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