XML 19 R1.htm IDEA: XBRL DOCUMENT v3.21.1
DOCUMENT AND ENTITY INFORMATION
 12 Months Ended
Dec. 31, 2020
shares
Entity Addresses [Line Items]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-3132734
Entity Registrant Name TERNIUM S.A.
Entity Incorporation, State or Country Code N4
Entity Address, Address Line One 26, Boulevard Royal– 4th floor
Entity Address, Postal Zip Code -2449
Entity Address, City or Town Luxembourg
Entity Address, Country LU
Entity Common Stock, Shares Outstanding 2,004,743,442
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
ICFR Auditor Attestation Flag true
Document Accounting Standard International Financial Reporting Standards
Entity Shell Company false
Entity Central Index Key 0001342874
Current Fiscal Year End Date --12-31
Document Period End Date Dec. 31, 2020
Document Fiscal Year Focus 2020
Document Fiscal Period Focus FY
Amendment Flag false
American Depositary Shares  
Entity Addresses [Line Items]  
Title of 12(b) Security American Depositary Shares
Trading Symbol TX
Security Exchange Name NYSE
Ordinary Shares, par value $1.00 per share  
Entity Addresses [Line Items]  
Title of 12(b) Security Ordinary Shares, par value $1.00 per share
Trading Symbol TX
Security Exchange Name NYSE
Business Contact  
Entity Addresses [Line Items]  
Entity Address, Address Line One 26, Boulevard Royal– 4th floor
Entity Address, Postal Zip Code -2449
Entity Address, City or Town Luxembourg
Entity Address, Country LU
Contact Personnel Name Alejandra Hryszkiewicz
City Area Code 352
Local Phone Number 26 68 31 52
Contact Personnel Fax Number 352 26 53 83 49
Contact Personnel Email Address luxembourg@ternium.com