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Interbank Borrowings (Details) - CLP ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure of financial liabilities [line items]    
Interbank borrowings $ 2,519,818 $ 1,788,626
Loans From Foreign Financial Institutions [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 2,232,856 1,284,501
Loans From Foreign Financial Institutions [Member] | Bank Of America N.A. [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 355,051 38,906
Loans From Foreign Financial Institutions [Member] | Citibank N.A. [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 269,841
Loans From Foreign Financial Institutions [Member] | Mizuho Bank Ltd. NY. [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 269,404 223,829
Loans From Foreign Financial Institutions [Member] | Wells Fargo Bank N.A. [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 231,823
Loans From Foreign Financial Institutions [Member] | Sumitomo Mitsui Banking Corporation [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 179,415 278,765
Loans From Foreign Financial Institutions [Member] | Standard Chartered Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 153,373 50,960
Loans From Foreign Financial Institutions [Member] | The Bank of Nova Scotia [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 134,819 163,927
Loans From Foreign Financial Institutions [Member] | The Bank of New York Mellon [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 119,616 69,921
Loans From Foreign Financial Institutions [Member] | Barclays Bank Plc London [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 98,803 34,965
Loans From Foreign Financial Institutions [Member] | Corporacion Andina De Fomento [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 75,097 52,371
Loans From Foreign Financial Institutions [Member] | Zurcher Kantonalbank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 75,002
Loans From Foreign Financial Institutions [Member] | The Toronto Dominion Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 71,191
Loans From Foreign Financial Institutions [Member] | HSBC Bank Plc [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 69,786 34,936
Loans From Foreign Financial Institutions [Member] | Bank of Montreal [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 56,123 31
Loans From Foreign Financial Institutions [Member] | State Bank of India [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 28,231 331
Loans From Foreign Financial Institutions [Member] | Banco Latinoamericano De Comercio [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 18,731
Loans From Foreign Financial Institutions [Member] | Banco Santander Brasil S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 7,873 8,040
Loans From Foreign Financial Institutions [Member] | Banco Santander Hong Kong [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 3,697 6,047
Loans From Foreign Financial Institutions [Member] | Standard Chartered Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 3,613 843
Loans From Foreign Financial Institutions [Member] | Bank of China [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 952 7,777
Loans From Foreign Financial Institutions [Member] | Industrial and Commercial Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 898 30
Loans From Foreign Financial Institutions [Member] | Banco Santander Central Hispano [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 848 1,295
Loans From Foreign Financial Institutions [Member] | Korea Exchange Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 761
Loans From Foreign Financial Institutions [Member] | Hong Kong and Shanghai Banking [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 684 1,300
Loans From Foreign Financial Institutions [Member] | China Merchants Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 597
Loans From Foreign Financial Institutions [Member] | Unicredito Italiano Spa [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 583 1,117
Loans From Foreign Financial Institutions [Member] | Banco Bilbao Vizcaya Argentaria [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 571 888
Loans From Foreign Financial Institutions [Member] | Rabobank, Hong Kong Branch [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 477
Loans From Foreign Financial Institutions [Member] | Bbva Bancomer, S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 553
Loans From Foreign Financial Institutions [Member] | Kbc Bank Nv [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 406
Loans From Foreign Financial Institutions [Member] | Bank of Communications [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 385
Loans From Foreign Financial Institutions [Member] | Bank of The West [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 261
Loans From Foreign Financial Institutions [Member] | Danske Bank A/S [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 224
Loans From Foreign Financial Institutions [Member] | Deutsche Bank A,G, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 193 5,558
Loans From Foreign Financial Institutions [Member] | Kookmin Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 185
Loans From Foreign Financial Institutions [Member] | Caixabank S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 166
Loans From Foreign Financial Institutions [Member] | E, Sun Commercial Bank Ltd, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 159
Loans From Foreign Financial Institutions [Member] | Bank of Tokio Mitsubishi [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 156 1,032
Loans From Foreign Financial Institutions [Member] | Woori Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 155
Loans From Foreign Financial Institutions [Member] | Agricultural Bank of China [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 152 106
Loans From Foreign Financial Institutions [Member] | Bank of Taiwan [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 135 127
Loans From Foreign Financial Institutions [Member] | Shinhan Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 133
Loans From Foreign Financial Institutions [Member] | Taiwan Cooperative Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 131
Loans From Foreign Financial Institutions [Member] | Keb Hana Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 119
Loans From Foreign Financial Institutions [Member] | United Bank of India [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 113 378
Loans From Foreign Financial Institutions [Member] | Banca Di Credito Cooperativo A [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 112
Loans From Foreign Financial Institutions [Member] | Joint Stock Commercial Bank Fo, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 110 33
Loans From Foreign Financial Institutions [Member] | Banca Nazionale Del Lavoro S,P [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 106 77
Loans From Foreign Financial Institutions [Member] | Hua Nan Commercial Bank Ltd, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 102 164
Loans From Foreign Financial Institutions [Member] | Industrial Bank of Korea [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 96 195
Loans From Foreign Financial Institutions [Member] | Banco Bradesco S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 84 89
Loans From Foreign Financial Institutions [Member] | Bank of Ningbo [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 83
Loans From Foreign Financial Institutions [Member] | Bank of East Asia, Limited [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 82 205
Loans From Foreign Financial Institutions [Member] | Hdfc Bank Limited [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 72
Loans From Foreign Financial Institutions [Member] | China Everbright Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 70
Loans From Foreign Financial Institutions [Member] | Cassa Di Risparmio Di Parma E [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 69
Loans From Foreign Financial Institutions [Member] | Mizuho Corporate Bank Ltd, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 67
Loans From Foreign Financial Institutions [Member] | Banco Bpm Spa [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 66 21
Loans From Foreign Financial Institutions [Member] | Canara Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 66
Loans From Foreign Financial Institutions [Member] | Banco Comercial Portugues [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 63
Loans From Foreign Financial Institutions [Member] | Caixa Destalvis I Pensions de Barcelona [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 63
Loans From Foreign Financial Institutions [Member] | Shanghai Pudong Development Ba [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 59 237
Loans From Foreign Financial Institutions [Member] | Banca Monte dei Paschi di Siena [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 58 179
Loans From Foreign Financial Institutions [Member] | Banca Commerciale Italiana S,P, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 50 288
Loans From Foreign Financial Institutions [Member] | Fortis Bank S,A,/N,V, Brussels [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 50 42
Loans From Foreign Financial Institutions [Member] | Habib Bank Limited [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 38
Loans From Foreign Financial Institutions [Member] | Kasikornbank Public Company Li [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 38
Loans From Foreign Financial Institutions [Member] | Banco Rio De La Plata S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 24
Loans From Foreign Financial Institutions [Member] | Australia And New Zealand Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 23
Loans From Foreign Financial Institutions [Member] | Banco de la Republica Oriental [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 23 41
Loans From Foreign Financial Institutions [Member] | Citic Industrial Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 19
Loans From Foreign Financial Institutions [Member] | Shangai Pudong Development Ban [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 14
Loans From Foreign Financial Institutions [Member] | Banco Caixa Geral [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 10
Loans From Foreign Financial Institutions [Member] | Bank of Baroda [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 9 37
Loans From Foreign Financial Institutions [Member] | Shanghai Commercial and Saving [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 6 33
Loans From Foreign Financial Institutions [Member] | Hsbc Bank USA [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 2 394
Loans From Foreign Financial Institutions [Member] | Akbank T,A,S, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 106
Loans From Foreign Financial Institutions [Member] | Banca Lombarda E Piemontese S, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 60
Loans From Foreign Financial Institutions [Member] | Banca Popolare Dell'Emilia Rom [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 31
Loans From Foreign Financial Institutions [Member] | Banca Popolare Di Milano S,C,A [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 6
Loans From Foreign Financial Institutions [Member] | Banco Commerzbank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 19
Loans From Foreign Financial Institutions [Member] | Banco de Galicia Y Buenos Aires [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 231
Loans From Foreign Financial Institutions [Member] | Banco De Sabadell S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 20
Loans From Foreign Financial Institutions [Member] | Banco Internacional S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 33
Loans From Foreign Financial Institutions [Member] | Banco Itau S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 14
Loans From Foreign Financial Institutions [Member] | Banistmo S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 32
Loans From Foreign Financial Institutions [Member] | Bank of India [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 51
Loans From Foreign Financial Institutions [Member] | Bank of Shanghai [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 134
Loans From Foreign Financial Institutions [Member] | Bankinter S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 24
Loans From Foreign Financial Institutions [Member] | Banque Bruxelles Lambert S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 509
Loans From Foreign Financial Institutions [Member] | Bnp Paribas, Hong Kong Branch [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 3,554
Loans From Foreign Financial Institutions [Member] | Caixabank S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 44
Loans From Foreign Financial Institutions [Member] | Cajas Rurales Unidas [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 18
Loans From Foreign Financial Institutions [Member] | Canara Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 237
Loans From Foreign Financial Institutions [Member] | Casa Di Risparmo De Padova E,R, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 30
Loans From Foreign Financial Institutions [Member] | Cassa Di Risparmio In Bologna [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 21
Loans From Foreign Financial Institutions [Member] | Chang Hwa Commercial Bank Ltd, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 18
Loans From Foreign Financial Institutions [Member] | China Construction Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 35
Loans From Foreign Financial Institutions [Member] | Citibank N,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 241,041
Loans From Foreign Financial Institutions [Member] | Credit Agricole [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 106
Loans From Foreign Financial Institutions [Member] | Credit Lyonnais [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 139
Loans From Foreign Financial Institutions [Member] | Development Bank of Singapore [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 3
Loans From Foreign Financial Institutions [Member] | Dexia Bank SA [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 789
Loans From Foreign Financial Institutions [Member] | First Union National Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 201
Loans From Foreign Financial Institutions [Member] | Hang Seng Bank (China) Limited [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 6
Loans From Foreign Financial Institutions [Member] | Hanvit Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 58
Loans From Foreign Financial Institutions [Member] | Hdfc Bank Limited [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 28
Loans From Foreign Financial Institutions [Member] | Hsbc Bank Middle East [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 77
Loans From Foreign Financial Institutions [Member] | International Commercial Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 70
Loans From Foreign Financial Institutions [Member] | Kbc Bank Nv [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 23
Loans From Foreign Financial Institutions [Member] | Keb Hana Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 2,318
Loans From Foreign Financial Institutions [Member] | Kookmin Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 78
Loans From Foreign Financial Institutions [Member] | Mega International Commercial [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 9
Loans From Foreign Financial Institutions [Member] | Metropolitan Bank Limited [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 170
Loans From Foreign Financial Institutions [Member] | Oriental Bank of Commerce [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 87
Loans From Foreign Financial Institutions [Member] | Rabobank, Hong Kong Branch [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 1,548
Loans From Foreign Financial Institutions [Member] | Raiffeisen Bank Polska S,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 31
Loans From Foreign Financial Institutions [Member] | Shinhan Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 380
Loans From Foreign Financial Institutions [Member] | Taiwan Business Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 19
Loans From Foreign Financial Institutions [Member] | Taiwan Cooperative Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 66
Loans From Foreign Financial Institutions [Member] | U,S, Bank (Formerly First Bank) [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 18
Loans From Foreign Financial Institutions [Member] | United World Chinese Commercial Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 15
Loans From Foreign Financial Institutions [Member] | Wachovia Bank N,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 33,499
Loans From Foreign Financial Institutions [Member] | Wells Fargo Bank N,A, [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 216,749
Loans From Foreign Financial Institutions [Member] | Woori Bank [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 356
Loans From Financial Institutions And The Central Bank Of Chile [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings
Loans From Financial Institutions And The Central Bank Of Chile [Member] | Borrowings And Other Obligations [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings
Loans From Domestic Financial Institutions [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 286,603
Loans from foreign financial institutions, continuacion [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings 2,519,818 1,788,626
Loans from foreign financial institutions, continuacion [Member] | Subtotal [Member]    
Disclosure of financial liabilities [line items]    
Interbank borrowings $ 359 $ 504,125