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Interest Income (Details 1) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | $ (866,327) | $ (809,956) | $ (719,850)
Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (680,827) | (629,467) | (617,200)
Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (185,500) | (180,489) | (102,650)
Demand Deposits [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (15,526) | (16,285) | (14,546)
Demand Deposits [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (14,018) | (14,914) | (13,851)
Demand Deposits [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (1,508) | (1,371) | (695)
Repurchase Agreements [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (9,710) | (6,439) | (6,514)
Repurchase Agreements [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (9,710) | (6,439) | (6,514)
Repurchase Agreements [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting |  |  |
Time Deposits And Liabilities [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (362,479) | (352,345) | (362,330)
Time Deposits And Liabilities [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (335,307) | (317,061) | (341,821)
Time Deposits And Liabilities [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (27,172) | (35,284) | (20,509)
Interbank Loan [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (50,354) | (39,971) | (26,805)
Interbank Loan [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (50,354) | (39,971) | (26,805)
Interbank Loan [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting |  |  |
Issued Debt Instruments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (395,999) | (374,682) | (296,197)
Issued Debt Instruments [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (250,512) | (241,455) | (220,027)
Issued Debt Instruments [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (145,487) | (133,227) | (76,170)
Other financial liabilities [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (1,343) | (2,808) | (3,249)
Other financial liabilities [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (1,310) | (2,698) | (2,946)
Other financial liabilities [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (33) | (110) | (303)
Lease contracts [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (2,965) |  |
Lease contracts [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (2,965) |  |
Lease contracts [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting |  |  |
Other Interest Expense [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (27,951) | (17,426) | (10,209)
Other Interest Expense [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | (16,651) | (6,929) | (5,236)
Other Interest Expense [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest expense not including expenses from hedge accounting | $ (11,300) | $ (10,497) | $ (4,973)

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