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Employee Benefits (Details 4) - CLP ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of Employee benefits [Abstract]      
Current cost of service $ 3,077,205 $ 2,457,762 $ 2,154,071
Past service cost 653,426 930,906 306,746
Non-provided paid benefits 3,718,682 3,959,881 6,547,694
Other 2,271,831 70,747 175,005
Total expense recognized in Consolidated Statement of Income $ 9,721,144 $ 7,419,296 $ 9,183,516