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Risk Management (Details 2) - CLP ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure of risk management strategy related to hedge accounting [line items]    
Total ECL Allowance $ 2,042 $ 723
Credit Risk [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Total ECL Allowance 896,196 882,520
Collective [Member] | Credit Risk [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Financial assets 32,671,515 30,213,415
Modified loans $ 1,123,845 $ 1,397,607
Percentage 3.44% 4.63%
Total ECL Allowance $ 896,095 $ 882,414
Modified loans $ 276,978 $ 367,901
Percentage 31.13% 41.69%
Collective [Member] | Credit Risk [Member] | Stage 1 [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Financial assets $ 29,014,636 $ 26,913,508
Modified loans
Percentage
Total ECL Allowance $ 133,269 $ 153,640
Modified loans
Percentage
Collective [Member] | Credit Risk [Member] | Stage 2 [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Financial assets $ 1,995,733 $ 1,796,790
Modified loans $ 512,529 $ 582,513
Percentage 25.68% 32.42%
Total ECL Allowance $ 121,261 $ 124,114
Modified loans $ 36,329 $ 44,099
Percentage 29.96% 35.25%
Collective [Member] | Credit Risk [Member] | Stage 3 [Member]    
Disclosure of risk management strategy related to hedge accounting [line items]    
Financial assets $ 1,634,146 $ 1,503,116
Modified loans $ 611,316 $ 815,094
Percentage 37.41% 54.23%
Total ECL Allowance $ 641,565 $ 603,660
Modified loans $ 242,649 $ 323,802
Percentage 37.82% 53.64%