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OTHER OPERATING INCOME (EXPENSES), NET (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Other operating income (expenses), net [Abstract] |  |  |
Results of sundry assets | $ 1,363 | $ 258 | $ 1,895
Provision for legal claims and other matters | 0 | 1,997 | 7,625
Recovery of provision related to the ICMS action of unconstitutionality | 380,075 | 0 | 0
Other operating income | 20,093 | 19,408 | 4,136
Other operating income | 401,531 | 21,663 | 13,656
Reversal of the asset in connection with the ICMS provision | (194,065) | 0 | 0
Provision for legal claims and other matters | (623) | 0 | 0
Other operating expense | (194,688) | 0 | 0
Other operating income (expenses), net | $ 206,843 | $ 21,663 | $ 13,656

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- Definition The amount of miscellaneous other operating income. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of operating income (expense) that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_85&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Other operating expense + References No definition available. + Details
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- Definition Other operating income + References No definition available. + Details
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- Definition Other operating income (expenses), net [Abstract] + References No definition available. + Details
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- Definition Provision for legal claims and other matters + References No definition available. + Details
Name: | tx_Provisionforlegalclaimsandothermatters
Namespace Prefix: | tx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Provision for legal claims and other matters, net reversals + References No definition available. + Details
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- Definition Recovery of Provision Related to the Action of Unconstitutionality + References No definition available. + Details
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- Definition Results of sundry assets + References No definition available. + Details
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- Definition Reversal of the Asset in Connection with the Provision + References No definition available. + Details
Name: | tx_ReversalOfTheAssetInConnectionWithTheProvision
Namespace Prefix: | tx_
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