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27. EMPLOYEE BENEFITS (Details 15) - Post-employment healthcare benefits | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Male |  |
Disclosure of defined benefit plans [line items] |  |
Average life expectancy of employees (in years) | 19.55 | 19.55
Average life expectancy in years of employees who are 40 (in years) | 41.59 | 41.59
Female |  |
Disclosure of defined benefit plans [line items] |  |
Average life expectancy of employees (in years) | 22.17 | 22.17
Average life expectancy in years of employees who are 40 (in years) | 45.30 | 45.30

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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