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Other Provisions (Details 1) - CLP ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Statement [Line Items]    
Incorporated $ 398,325 $ 3,665,562
Used (240,461) (783,511)
Released (57,551) (6,871,126)
Conversion effect (200,221) (268,862)
Changes (99,908) (4,257,937)
Other provisions 3,472,983 3,572,891
Litigation [member]    
Statement [Line Items]    
Incorporated 394,408 493,097
Used (198,291) (461,968)
Released (53,597) (129,623)
Conversion effect (165,510) (233,759)
Changes (22,990) (332,253)
Other provisions 538,388 561,378
Others [member]    
Statement [Line Items]    
Incorporated 3,917 3,172,465
Used (42,170) (321,543)
Released (3,954) (6,741,503)
Conversion effect (34,711) (35,103)
Changes (76,918) (3,925,684)
Other provisions $ 2,934,595 $ 3,011,513