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Non Current Assets Held for Sale (Details) - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement Line Items [Line Items]      
Assets $ 22,394  
Total 1,699 3,771 $ 2,819
Transbank S.A. [Member]      
Statement Line Items [Line Items]      
Assets $ 19,093    
Participation 25.00%    
Total $ 1,442 3,118 2,024
Nexus [Member]      
Statement Line Items [Line Items]      
Assets [1] $ 357    
Participation [1] 1.94%    
Total [1] $ 136 368 442
Redbanc [Member]      
Statement Line Items [Line Items]      
Assets $ 2,944    
Participation 33.43%    
Total $ 121 $ 285 $ 353
[1] Remaining participation pending to sell at the end of the current year. See Note 40.