Name:	ifrs-full_NoncurrentProvisionsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of non-current provisions other than provisions for employee benefits. [Refer: Non-current provisions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph B9
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_B9_e&doctype=Appendix&subtype=B
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 78
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_78_d&doctype=Standard
-URIDate 2025-03-27

Name:	ifrs-full_OtherLongtermProvisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of current provisions other than provisions for employee benefits. [Refer: Provisions]

Name:	ifrs-full_OtherShorttermProvisions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Additional Provisions, Other Provisions, Current

No definition available.

Name:	tx_AdditionalProvisionsOtherProvisionsCurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Additional Provisions, Other Provisions, Non-Current

No definition available.

Name:	tx_AdditionalProvisionsOtherProvisionsNonCurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Increase (Decrease) Through Transfers, Provisions, Current

No definition available.

Name:	tx_IncreaseDecreaseThroughTransfersProvisionsCurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Increase (Decrease) Through Transfers, Provisions, Non-Current

No definition available.

Name:	tx_IncreaseDecreaseThroughTransfersProvisionsNonCurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Increase (decrease) through net exchange differences, other provisions, current

No definition available.

Name:	tx_Increasedecreasethroughnetexchangedifferencesotherprovisionscurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Increase (decrease) through net exchange differences, other provisions, non-current

No definition available.

Name:	tx_Increasedecreasethroughnetexchangedifferencesotherprovisionsnoncurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Other reversals of provisions, current

No definition available.

Name:	tx_OtherReversalsOfProvisionsCurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Other reversals of provisions, non-current

No definition available.

Name:	tx_OtherReversalsOfProvisionsNonCurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Provision used, other provisions, current

No definition available.

Name:	tx_Provisionusedotherprovisionscurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Provision used, other provisions, non-current

No definition available.

Name:	tx_Provisionusedotherprovisionsnoncurrent
Namespace Prefix:	tx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Name:	ifrs-full_ClassesOfProvisionsAxis=ifrs-full_AllowanceForCreditLossesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfProvisionsAxis=ifrs-full_LegalProceedingsProvisionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfProvisionsAxis=tx_AssetRetirementObligationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfProvisionsAxis=tx_ObsolescenceallowanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: