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Other Provisions (Details 2 ) - CLP ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Statement [Line Items]    
Other provisions $ 3,472,983 $ 3,572,891
Not later than one year [member]    
Statement [Line Items]    
Other provisions 2,984,518 3,040,930
Later than one year and not later than five years [member]    
Statement [Line Items]    
Other provisions 349,227 402,776
Over 5 years    
Statement [Line Items]    
Other provisions 139,238 129,185
Legal proceedings provision [member]    
Statement [Line Items]    
Other provisions 538,388 561,378
Legal proceedings provision [member] | Not later than one year [member]    
Statement [Line Items]    
Other provisions 179,521 193,764
Legal proceedings provision [member] | Later than one year and not later than five years [member]    
Statement [Line Items]    
Other provisions 219,629 238,429
Legal proceedings provision [member] | Over 5 years    
Statement [Line Items]    
Other provisions 139,238 129,185
Miscellaneous other provisions [member]    
Statement [Line Items]    
Other provisions 2,934,595 3,011,513
Miscellaneous other provisions [member] | Not later than one year [member]    
Statement [Line Items]    
Other provisions 2,804,997 2,847,166
Miscellaneous other provisions [member] | Later than one year and not later than five years [member]    
Statement [Line Items]    
Other provisions 129,598 164,347
Miscellaneous other provisions [member] | Over 5 years    
Statement [Line Items]    
Other provisions $ 0 $ 0