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CURRENT AND DEFERRED INCOME TAXES - Income tax expense (Details) - CLP ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
CURRENT AND DEFERRED INCOME TAXES      
Current income tax expense $ 40,183,261 $ 35,902,002 $ 33,322,550
Current tax adjustment previous period 137,455 534,392 (117,316)
Withholding tax expense foreign subsidiaries 6,730,031 7,645,218 7,027,661
Other current tax expense (income) (5,733) 92,008 1,212,398
Current income tax expense 47,045,014 44,173,620 41,445,293
Income (expense) for the creation and reversal of current tax difference 4,752,620 4,633,473 197,269
Expense (income) for deferred taxes 4,752,620 4,633,473 197,269
Total income tax expense $ 51,797,634 $ 48,807,093 $ 41,642,562