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BASIS OF PRESENTATION (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure of notes and other explanatory information [Abstract] |
Disclosure of interests in subsidiaries | Detailed below are the companies whose financial statements have been consolidated and accounted for interest in these consolidated financial statements
|  | Country of |  |  |  | Percentage of ownership at December 31,
Company |  | Organization |  | Main activity |  | 2017 |  | 2016 |  | 2015
Ternium S.A. |  | Luxembourg |  | Holding |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Investments S.à.r.l. |  | Luxembourg |  | Holding |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Solutions A.G. (1) |  | Switzerland |  | Services |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Participaçoes S.A. (formerly Ternium Brasil S.A.) (1) |  | Brazil |  | Holding |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Investments Switzerland AG (1) |  | Switzerland |  | Holding |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Internacional España S.L.U. (1) |  | Spain |  | Marketing of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium USA Inc. (1) |  | USA |  | Manufacturing and selling of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Argentina S.A. (formerly Siderar S.A.I.C.) (2) |  | Argentina |  | Manufacturing and selling of flat steel products |  | 60.94 | % |  | 60.94 | % |  | 60.94 | %
Impeco S.A. (3) |  | Argentina |  | Manufacturing of pipe products |  | 60.97 | % |  | 60.97 | % |  | 60.97 | %
Prosid Investments S.A. (4) |  | Uruguay |  | Holding |  | 60.94 | % |  | 60.94 | % |  | 60.94 | %
Ternium Mexico S.A. de C.V. (5) |  | Mexico |  | Holding |  | 88.78 | % |  | 88.78 | % |  | 88.72 | %
Hylsa S.A. de C.V. (6) |  | Mexico |  | Manufacturing and selling of steel products |  | 88.78 | % |  | 88.78 | % |  | 88.72 | %
Las Encinas S.A. de C.V. (6) |  | Mexico |  | Exploration, exploitation and pelletizing of iron ore |  | 88.78 | % |  | 88.78 | % |  | 88.72 | %
Ferropak Comercial S.A. de C.V. (6) |  | Mexico |  | Scrap services company |  | 88.78 | % |  | 88.78 | % |  | 88.72 | %
Galvamet America Corp (6) |  | USA |  | Manufacturing and selling of insulated panel products |  | 88.78 | % |  | 88.78 | % |  | 88.72 | %
Transamerica E. & I. Trading Corp. (6) |  | USA |  | Scrap services company |  | 88.78 | % |  | 88.78 | % |  | 88.72 | %
Técnica Industrial S.A. de C.V. (6) |  | Mexico |  | Services |  | 88.78 | % |  | 88.78 | % |  | 88.72 | %
Acedor, S.A. de C.V. (6) |  | Mexico |  | Holding |  | 88.78 | % |  | 88.78 | % |  | 88.72 | %
Galvacer America Inc (7) |  | USA |  | Distributing company |  | — |  |  | 88.78 | % |  | 88.72 | %
Ternium Gas México S.A. de C.V. (8) |  | Mexico |  | Energy services company |  | 88.78 | % |  | 88.78 | % |  | 88.72 | %
Ternium Internacional Guatemala S.A. (9) |  | Guatemala |  | Selling of steel products |  | 99.98 | % |  | 99.98 | % |  | 99.98 | %
Consorcio Minero Benito Juarez Peña Colorada S.A.de C.V. (10) |  | Mexico |  | Exploration, exploitation and pelletizing of iron ore |  | 44.39 | % |  | 44.39 | % |  | 44.36 | %
Peña Colorada Servicios S.A. de C.V. (10) |  | Mexico |  | Services |  | 44.39 | % |  | 44.39 | % |  | 44.36 | %
Exiros B.V. (10) |  | Netherlands |  | Procurement and trading services |  | 50.00 | % |  | 50.00 | % |  | 50.00 | %
Servicios Integrales Nova de Monterrey S.A. de C.V. (11) |  | Mexico |  | Medical and Social Services |  | 66.14 | % |  | 66.14 | % |  | 66.09 | %
Ternium Internacional Nicaragua S.A. |  | Nicaragua |  | Manufacturing and selling of steel products |  | 99.38 | % |  | 99.38 | % |  | 99.38 | %
Ternium Internacional Honduras S.A. de C.V. |  | Honduras |  | Manufacturing and selling of steel products |  | 99.18 | % |  | 99.18 | % |  | 99.18 | %
Ternium Internacional El Salvador S.A. de C.V. |  | El Salvador |  | Manufacturing and selling of steel products |  | 99.92 | % |  | 99.92 | % |  | 99.91 | %
Ternium Internacional Costa Rica S.A. |  | Costa Rica |  | Manufacturing and selling of steel products |  | 99.98 | % |  | 99.98 | % |  | 99.98 | %
Ternium Colombia S.A.S. (formerly Ferrasa S.A.S.) (12) |  | Colombia |  | Manufacturing and selling of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium del Cauca S.A.S. (formerly Perfilamos del Cauca S.A.S.) (12) |  | Colombia |  | Manufacturing and selling of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Siderúrgica de Caldas S.A.S. (formerly Siderúrgica de Caldas S.A.S.) (12) |  | Colombia |  | Manufacturing and selling of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Tenigal S. de R.L. de C.V. (13) |  | Mexico |  | Manufacturing and selling of steel products |  | 51.00 | % |  | 51.00 | % |  | 51.00 | %
Ternium Internacional S.A. (14) |  | Uruguay |  | Holding and marketing of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
|  | Country of |  |  |  | Percentage of ownership at December 31,
Company |  | Organization |  | Main activity |  | 2017 |  | 2016 |  | 2015
Ternium Treasury Services S.A. (14) |  | Uruguay |  | Financial Services |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Internationaal B.V. (15) |  | Netherlands |  | Marketing of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium International Inc. (15) |  | Panama |  | Marketing of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Procurement S.A. (16) |  | Uruguay |  | Procurement services |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Technology & Engineering Services S.A. (16) |  | Uruguay |  | Engineering and other services |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium International USA Corporation (17) |  | USA |  | Marketing of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Internacional de Colombia S.A.S. (18) |  | Colombia |  | Marketing of steel products |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Ternium Ingeniería y Servicios de México S.A. de C.V. |  | Mexico |  | Engineering and other services |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Soluciones Integrales de Gestión S.A. (19) |  | Argentina |  | Other services |  | 100.00 | % |  | 100.00 | % |  | 100.00 | %
Procesadora de Materiales Industriales S.A. (20) |  | Colombia |  | Scrap services company |  | — |  |  | — |  |  | 100.00 | %
Ferropak Servicios S.A. de C.V. (21) |  | Mexico |  | Services |  | — |  |  | — |  |  | 88.72 | %
Corporativo Grupo Imsa S.A. de C.V. (21) |  | Mexico |  | Services |  | — |  |  | — |  |  | 88.72 | %
Ternium International Ecuador S.A. (22) |  | Ecuador |  | Marketing of steel products |  | — |  |  | — |  |  | 100.00 | %
Ternium Staal B.V. (23) |  | Netherlands |  | Holding and marketing of steel products |  | 100.00 |  |  | — |  |  | — |
Ternium Brasil Ltda. (23) |  | Brazil |  | Manufacturing and selling of steel products |  | 100.00 |  |  | — |  |  | — |
Ecosteel Gestao de Efuentes Industriais S.A. (23) |  | Brazil |  | Other services |  | 100.00 |  |  | — |  |  | — |
Ecosteel Gestao de Águas Industriais S.A. (23) |  | Brazil |  | Other services |  | 100.00 |  |  | — |  |  | — |
Ternium del Atlántico S.A.S (24) |  | Colombia |  | Manufacturing and selling of steel products |  | 100.00 |  |  | — |  |  | — |
(1) Indirectly through Ternium Investments S.à.r.l. Total voting rights held: 100.00%. (2) During the fourth quarter of 2017, Siderar S.A.I.C. changed its business name to Ternium Argentina S.A. Indirectly through Ternium Internacional España S.L.U. Total voting rights held: 60.94%. (3) Since the fourth quarter of 2017, indirectly through Ternium Argentina S.A. and Soluciones Integrales S.A Total voting rights held 100.00%. Before that, indirectly through Ternium Argentina S.A. and Ternium Internacional S.A. (4) Since the fourth quarter 2017, indirectly through Ternium Argentina S.A. and Ternium Procurement S.A. Total voting rights held 100.00%. Before that indirectly through Ternium Argentina S.A. and Ternium Internacional S.A. (5) Since the fourth quarter 2017, indirectly through Ternium Argentina S.A. and Ternium Internacional España S.L.U. Total voting rights held 100.00%. Before that indirectly through Ternium Argentina S.A., Ternium Internacional S.A. and Ternium Internacional España S.L.U. (6) Indirectly through Ternium Mexico S.A. de C.V. Total voting rights held: 100.00%. (7) This company dissolved as of December 11, 2017. (8) Indirectly through Ternium Mexico S.A. de C.V. and Tenigal S. de R.L. de C.V. Total voting rights held: 100.00%. (9) Indirectly through Ternium Internacional España S.L.U. Total voting rights held: 100.00%. (10) Total voting rights held: 50.00%. (11) Indirectly through Ternium Mexico S.A. de C.V. Total voting rights held: 74.50%. (12) Indirectly through Ternium Internacional España S.L.U.. Total voting rights held: 100.00%. See note 2 (b). (13) Indirectly through Ternium Internacional España S.L.U. Total voting rights held: 51.00%. (14) Indirectly through Ternium Investments Switzerland AG. Total voting rights held: 100.00%. (15) Since the third quarter 2017, indirectly through Ternium Investments S.à.r.l. Total voting rights held 100.00%. Before that, indirectly through Ternium Investments Switzerland AG. (16) Since the third quarter of 2017, indirectly through Ternium Internacional España S.L.U. Total voting rights held 100.00%. Before that, indirectly through Ternium Investments Switzerland AG. (17) Since the fourth quarter 2017, indirectly through Ternium Investments S.à.r.l. Total voting rights held: 100.00%. Before that, indirectly through Ternium Internacional S.A. (18) Indirectly through Ternium Internacional S.A. Total voting rights held 100.00%. (19) Since the third quarter of 2017, indirectly through Ternium Investments Sà.r.l and Ternium Internacional España S.L.U. Total voting rights held 100.00%. Before that indirectly throgh Ternium Investments S.à.r.l and Technology and Engineering Services S.A. (20) This company was dissolved as of December 6, 2016. (21) Merged with Hylsa S.A. de C.V. during the fourth quarter of 2016. (22) This company was dissolved as of September 27, 2016. (23) Indirectly through Ternium Investments S.à.r.l. Total voting right held: 100.00%. (24) Indirectly through Ternium Internacional España S.L.U. Total voting rights held: 100.00%.

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