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Employee Benefits (Details 4) - CLP ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of Employee benefits [Abstract]      
Current cost of service $ 2,154,071 $ 1,942,099 $ 1,650,484
Past service cost 306,746 604,337 342,039
Non-provided paid benefits 6,547,694 6,023,869 7,851,201
Other 175,005 269,377 1,114,112
Total expense recognized in Consolidated Statement of Income $ 9,183,516 $ 8,839,682 $ 10,957,836