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INCOME TAX EXPENSE AND DEFERRED TAXES - Income tax expense (Details) - CLP ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
INCOME TAX EXPENSE AND DEFERRED TAXES      
Current income tax expense $ 35,439,707 $ 38,313,980 $ 40,183,261
Current tax adjustment previous period 713,992 312,403 137,455
Withholding tax expense foreign subsidiaries 4,534,145 7,364,213 6,730,031
Other components of current tax expense (income) (425,958) 474,105 (5,733)
Current income tax expense 40,261,886 46,464,701 47,045,014
Expense (income) for the creation and reversal of temporary differences of deferred tax and others 20,905,005 9,100,154 4,752,620
Expense (income) for deferred taxes 20,905,005 9,100,154 4,752,620
Total income tax expense $ 61,166,891 $ 55,564,855 $ 51,797,634