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Non-controlling interests - Cash flows (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure of subsidiaries [line items] |  |
Cash flows from operating activities | $ 993,926 | $ 461,082
Cash flows from (used in) financing activities | (642,650) | 234,059
Cash flows used in investing activities | (253,048) | (278,063)
Total |  |
Disclosure of subsidiaries [line items] |  |
Cash flows from operating activities | 54,009 | 170,623
Cash flows from (used in) financing activities | (82,983) | (113,396)
Cash flows used in investing activities | (35,875) | (13,097)
Methanex Egypt |  |
Disclosure of subsidiaries [line items] |  |
Cash flows from operating activities | 26,049 | 145,672
Cash flows from (used in) financing activities | (84,382) | (96,052)
Cash flows used in investing activities | (4,563) | (5,309)
Vessels |  |
Disclosure of subsidiaries [line items] |  |
Cash flows from operating activities | 27,960 | 24,951
Cash flows from (used in) financing activities | 1,399 | (17,344)
Cash flows used in investing activities | $ (31,312) | $ (7,788)

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