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Fixed Assets and Right of Use Assets and Lease Liability (Details 3) - CLP ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Statement Line Items [Line Items]    
First application $ 208,797  
Total 155,987
Gross balance [Member]    
Statement Line Items [Line Items]    
Total 181,325  
Accumulated depreciation [Member]    
Statement Line Items [Line Items]    
Total (25,338)  
Land and buildings [Member]    
Statement Line Items [Line Items]    
First application 154,284  
Total 155,987  
Land and buildings [Member] | Gross balance [Member]    
Statement Line Items [Line Items]    
Total 181,325  
Land and buildings [Member] | Accumulated depreciation [Member]    
Statement Line Items [Line Items]    
Total (25,338)  
Equipment [Member]    
Statement Line Items [Line Items]    
First application  
Equipment [Member] | Gross balance [Member]    
Statement Line Items [Line Items]    
Total  
Equipment [Member] | Accumulated depreciation [Member]    
Statement Line Items [Line Items]    
Total  
Other [Member]    
Statement Line Items [Line Items]    
First application  
Total  
Other [Member] | Gross balance [Member]    
Statement Line Items [Line Items]    
Total  
Other [Member] | Accumulated depreciation [Member]    
Statement Line Items [Line Items]    
Total