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SUBSEQUENT EVENTS - Techgen Refinancing (Details) - Techgen Refinancing | Feb. 13, 2019 USD ($)
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Disclosure of non-adjusting events after reporting period [line items] |
Original principal amount | $ 640,000,000
Ternium S.A. and Ternium Investments S.a r.l. |
Disclosure of non-adjusting events after reporting period [line items] |
Percentage of the debt service coverage ratio covered by stand-by letters of credit | 48.00%
Amount of the debt service coverage ratio covered by stand-by letters of credit | $ 21,400,000

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