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Non-controlling interests - Cash flows (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Disclosure of subsidiaries [line items] |  |
Cash flows from (used in) operating activities | $ 787,742 | $ 226,667
Cash flows from (used in) financing activities | (530,636) | (169,502)
Cash flows from (used in) investing activities | (105,517) | (88,209)
Methanex Egypt |  |
Disclosure of subsidiaries [line items] |  |
Cash flows from (used in) operating activities | 131,175 | (23,992)
Cash flows from (used in) financing activities | (27,365) | (24,929)
Cash flows from (used in) investing activities | (18,839) | (4,637)
Other |  |
Disclosure of subsidiaries [line items] |  |
Cash flows from (used in) operating activities | 19,538 | 17,718
Cash flows from (used in) financing activities | (3,250) | 55,891
Cash flows from (used in) investing activities | (605) | (70,516)
Total |  |
Disclosure of subsidiaries [line items] |  |
Cash flows from (used in) operating activities | 150,713 | (6,274)
Cash flows from (used in) financing activities | (30,615) | 30,962
Cash flows from (used in) investing activities | $ (19,444) | $ (75,153)

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- Definition The cash flows from (used in) financing activities, which are activities that result in changes in the size and composition of the contributed equity and borrowings of the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_10&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 50 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_50_d&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The cash flows from (used in) investing activities, which are the acquisition and disposal of long-term assets and other investments not included in cash equivalents. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_10&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 50 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_50_d&doctype=Standard -URIDate 2017-03-09 + Details
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