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Non-controlling interests - Cash flows (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Disclosure of subsidiaries [line items] |  |
Cash flows from operating activities | $ 737,178 | $ 660,269
Cash flows used in financing activities | (203,546) | (551,418)
Cash flows from (used in) investing activities | (99,737) | (508,583)
Total |  |
Disclosure of subsidiaries [line items] |  |
Cash flows from operating activities | 324,973 | 382,957
Cash flows used in financing activities | (390,536) | (400,314)
Cash flows from (used in) investing activities | (16,009) | (2,874)
Methanex Egypt |  |
Disclosure of subsidiaries [line items] |  |
Cash flows from operating activities | 97,601 | 131,667
Cash flows used in financing activities | (146,586) | (99,490)
Cash flows from (used in) investing activities | (14,273) | (5,560)
Waterfront Shipping Limited |  |
Disclosure of subsidiaries [line items] |  |
Cash flows from operating activities | 227,372 | 251,290
Cash flows used in financing activities | (243,950) | (300,824)
Cash flows from (used in) investing activities | $ (1,736) | $ 2,686

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