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Risk Management (Details Textual)
$ in Millions
 12 Months Ended
Dec. 31, 2019
CLP ($)
Segment
Dec. 31, 2018
CLP ($)
Disclosure of renegotiated assets [line items]    
Percentage of renegotiated portfolio of Banco de Chile on total loans 1.99%  
Redefault rate of renegotiated portfolio for retail segment (as a percent) 35.80%  
Average term of commercial credit renegotiated loans (in months) 56 months  
Amortised costs of financial assets modified during the period $ 227,718  
Net modification loss $ 81,974  
Maximum percentage of provisions on renegotiated loans 99.00%  
Period of default prior to renegotiation (in months) 6 months  
Maximum overdue period for provision of decrease in renegotiated payment behaviour 30 days  
Period for renegotiated payment behaviour 7 months  
Period used to test for impairment of loans 90 days  
Number of collateral assets | Segment 235,878  
Value of guarantees, classified as impaired $ 100,133 $ 85,721
Value of guarantees, classified as non-impaired $ 344,098 95,634
Number of directors in Finance, International and Financial Risk Committee | Segment 4  
Minimum amount for review of approved application by Directors Credit Committee $ 750,000  
Number of directors in Portfolio Risk Committee | Segment 2  
Assets received in lieu of payment $ 18,737 $ 24,871
Annual increase in th regulatory limit of LCR 0.1  
Maximum exposure to credit risk does not exceed (in percentage) 10.00% 10.00%
Maximum potential loss impact on the trading book $ 15,500  
Risk categories, discription There are 5 risk categories (0%, 10%, 20%, 60% and 100%). For example, cash, deposits in other banks and financial instruments issued by the Central Bank of Chile have 0% risk, which means that, according to current standards, no capital is required to back these assets. Properties and equipment have a 100% risk, which means that they must have a minimum capital equivalent to 8% of the amount of these assets and in the case of the Bank of Chile 10%.  
Credit Exposure Factor [Member]    
Disclosure of renegotiated assets [line items]    
Maximum percentage of provisions on renegotiated loans 50.00%  
Maximum exposure to credit risk does not exceed (in percentage) 95.00%  
Confidence level [Member]    
Disclosure of renegotiated assets [line items]    
Maximum percentage of provisions on renegotiated loans 99.00%  
Confidence level 1 [Member]    
Disclosure of renegotiated assets [line items]    
Maximum percentage of provisions on renegotiated loans 99.00%