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PROVISIONS AND CONTINGENT PROVISIONS (Details 2) - CLP ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Provisions [abstract]    
Provision for seniority compensation $ 9,531 $ 17,874
Provision for stock-based personnel benefits
Provision for performance bonds 59,633 53,947
Provision for vacations 22,792 23,039
Provision for other personnel benefits 1,423 2,716
Total $ 93,379 $ 97,576