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Provisions and Contingent Provisions (Details) - CLP ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Provisions And Contingent Provisions        
Provisions for personnel salaries and expenses $ 101,223 $ 93,379    
Provisions for mandatory dividends 185,727 178,600    
Provisions for contingent loan 23,792 24,329    
Provision for contingencies 15,388 8,963    
Total $ 326,130 $ 305,271 $ 303,798 $ 292,210