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Equity (Details)
$ / shares in Units, $ in Millions
 1 Months Ended 12 Months Ended
Mar. 28, 2020
USD ($)
Mar. 28, 2020
$ / shares
Mar. 26, 2020
USD ($)
Mar. 26, 2020
$ / shares
Dec. 31, 2020
CLP ($)
$ / shares
shares
Dec. 31, 2019
CLP ($)
$ / shares
shares
Dec. 31, 2018
CLP ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
shares
Equity (Details) [Line Items]                
Number of registered shares (in Shares) | shares         101,017,081,114 101,017,081,114   101,017,081,114
Dividends per ordinary share (in Pesos per share) | $ / shares [1]         $ 3.47 $ 3.53 $ 3.76  
Dividends on ordinary shares (in Dollars)         $ 350,538 $ 356,311 $ 374,079  
Capitalization of net income           30.00%    
Equity provisions for minimum dividend         138,932 $ 177,902   $ 195,157,000
Fair market value adjustment for available-for-sale instruments         (6,236) 11,641    
Cash Flow hedge         $ 7,561 $ (27,408) $ (22,589)  
Retained earnings (in Dollars)               92,240,000,000
Equivalent (in Dollars)               $ 150,230
Capitalization of retained earnings (in Shares) | shares             1,572,948,922  
Common Shareholders [Member]                
Equity (Details) [Line Items]                
Dividends per ordinary share (in Pesos per share) | $ / shares   $ 3.52723589646   $ 3.47008338564        
Dividends on ordinary shares (in Dollars) $ 356,311,000,000   $ 350,538,000,000          
[1] Dividends per share are calculated by dividing the amount of the dividend paid during each year by the previous year’s number of shares outstanding.