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Interest Income (Details) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | $ 2,314,637 | $ 2,243,123 | $ 2,031,133
Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 1,815,170 | 1,775,256 | 1,773,066
Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 474,427 | 449,784 | 242,390
Hedged Of Prepaid Fees [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 25,040 | 18,083 | 15,677
Resale Agreements [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 718 | 903 | 939
Resale Agreements [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 718 | 903 | 939
Resale Agreements [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting |  |  |
Resale Agreements [Member] | Hedged Of Prepaid Fees [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting |  |  |
Interbank Loan [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 1,263 | 897 | 969
Interbank Loan [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 1,263 | 897 | 969
Interbank Loan [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting |  |  |
Interbank Loan [Member] | Hedged Of Prepaid Fees [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting |  |  |
Commercial Loans [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 957,224 | 936,264 | 847,927
Commercial Loans [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 780,284 | 771,405 | 752,013
Commercial Loans [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 160,462 | 153,851 | 85,389
Commercial Loans [Member] | Hedged Of Prepaid Fees [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 16,478 | 11,008 | 10,525
Mortgage Loans [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 633,938 | 597,655 | 469,758
Mortgage Loans [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 349,663 | 330,055 | 320,041
Mortgage Loans [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 283,820 | 266,691 | 149,303
Mortgage Loans [Member] | Hedged Of Prepaid Fees [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 455 | 909 | 414
Consumer Loans [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 602,196 | 586,534 | 618,033
Consumer Loans [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 593,705 | 579,929 | 612,932
Consumer Loans [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 384 | 439 | 363
Consumer Loans [Member] | Hedged Of Prepaid Fees [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 8,107 | 6,166 | 4,738
Investment Instruments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 97,319 | 100,213 | 79,797
Investment Instruments [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 71,150 | 75,423 | 74,000
Investment Instruments [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 26,169 | 24,790 | 5,797
Investment Instruments [Member] | Hedged Of Prepaid Fees [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting |  |  |
Other Interest Income [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 21,979 | 20,657 | 13,710
Other Interest Income [Member] | Hedged Of Interest [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 18,387 | 16,644 | 12,172
Other Interest Income [Member] | Hedged Of Inflation Adjustments [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting | 3,592 | 4,013 | 1,538
Other Interest Income [Member] | Hedged Of Prepaid Fees [Member] |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income not including income from hedge accounting |  |  |

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