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Maturity of Financial Assets and Liabilities (Details) - CLP ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | $ 50,574,714 |  | $ 39,132,512 |
Total financial liabilities |  | 47,096,211 |  | 35,887,052 |
Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 226,358 |  | 215,400 |
Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 9,500,723 |  | 8,115,233 |
Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 2,519,818 |  | 1,788,626 |
Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 7,390,654 |  | 2,517,728 |
Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 13,192,817 |  | 13,067,819 |
Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 380,055 |  | 48,545 |
Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 198,248 |  | 163,043 |
Deposits and interbank borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 10,297,432 |  | 8,741,417 |
Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Total financial liabilities |  |  |  | 540,091 |
More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 30,446,884 |  | 21,904,863 |
Total financial liabilities |  | 14,065,558 |  | 9,585,981 |
More Than 1 Year [Member] | Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 325 |  | 9,529 |
More Than 1 Year [Member] | Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 7,411,371 |  | 7,258,671 |
More Than 1 Year [Member] | Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 390,173 |  | 139,671 |
More Than 1 Year [Member] | Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 5,588,396 |  | 1,916,438 |
More Than 1 Year [Member] | Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 542,860 |  | 261,672 |
More Than 1 Year [Member] | Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
More Than 1 Year [Member] | Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
More Than 1 Year [Member] | Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Total financial liabilities |  |  |  |  |
More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 7,113,548 |  | 5,461,385 |
Total financial liabilities |  | 5,610,834 |  | 5,633,116 |
More Than 3 Months To 1 Year [Member] | Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 28,888 |  | 22,844 |
More Than 3 Months To 1 Year [Member] | Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 1,044,674 |  | 745,830 |
More Than 3 Months To 1 Year [Member] | Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 1,141,824 |  | 1,188,692 |
More Than 3 Months To 1 Year [Member] | Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 951,684 |  | 349,551 |
More Than 3 Months To 1 Year [Member] | Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 2,417,703 |  | 3,326,199 |
More Than 3 Months To 1 Year [Member] | Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
More Than 3 Months To 1 Year [Member] | Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
More Than 3 Months To 1 Year [Member] | Deposits and interbank borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
More Than 3 Months To 1 Year [Member] | Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 16,464,103 |  | 11,877,024 |
Total financial liabilities |  | 6,200,485 |  | 4,290,707 |
Due After 5 Years [Member] | Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 143 |  | 176 |
Due After 5 Years [Member] | Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 2,974,229 |  | 3,277,079 |
Due After 5 Years [Member] | Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Due After 5 Years [Member] | Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 3,154,168 |  | 949,464 |
Due After 5 Years [Member] | Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 21,883 |  | 63,988 |
Due After 5 Years [Member] | Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Due After 5 Years [Member] | Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Due After 5 Years [Member] | Deposits and interbank borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Due After 5 Years [Member] | Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 6,202,554 |  | 3,808,562 |
Total financial liabilities |  | 3,425,090 |  | 2,027,157 |
Later than three years and not later than five years [Member] | Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 99 |  | 92 |
Later than three years and not later than five years [Member] | Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 2,042,292 |  | 1,549,743 |
Later than three years and not later than five years [Member] | Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 2,237 |  |  |
Later than three years and not later than five years [Member] | Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 1,180,948 |  | 471,185 |
Later than three years and not later than five years [Member] | Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 163,121 |  | 6,137 |
Later than three years and not later than five years [Member] | Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Later than three years and not later than five years [Member] | Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Later than three years and not later than five years [Member] | Deposits and interbank borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Later than three years and not later than five years [Member] | Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 7,780,227 |  | 6,219,277 |
Total financial liabilities |  |  |  | 3,268,117 |
Between 1 and 3 years [Member] | Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 30,969 |  | 9,261 |
Between 1 and 3 years [Member] | Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 2,394,850 |  | 2,431,849 |
Between 1 and 3 years [Member] | Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 387,936 |  | 139,671 |
Between 1 and 3 years [Member] | Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 1,253,280 |  | 495,789 |
Between 1 and 3 years [Member] | Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 357,856 |  | 191,547 |
Between 1 and 3 years [Member] | Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Between 1 and 3 years [Member] | Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Between 1 and 3 years [Member] | Deposits and interbank borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Between 1 and 3 years [Member] | Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 18,944,561 |  | 16,539,128 |
Total financial liabilities |  |  |  | 25,611,921 |
Due Within 1 Year [Member] | Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 226,033 |  | 205,871 |
Due Within 1 Year [Member] | Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 2,089,352 |  | 856,562 |
Due Within 1 Year [Member] | Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 2,129,645 |  | 1,648,955 |
Due Within 1 Year [Member] | Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 1,802,258 |  | 601,290 |
Due Within 1 Year [Member] | Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 12,649,957 |  | 12,806,147 |
Due Within 1 Year [Member] | Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 380,055 |  | 48,545 |
Due Within 1 Year [Member] | Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 198,248 |  | 163,043 |
Due Within 1 Year [Member] | Deposits and interbank borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 10,297,432 |  | 8,741,417 |
Due Within 1 Year [Member] | Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 994,714 |  | 540,091 |
Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 2,804,857 |  | 2,451,466 |
Total financial liabilities |  |  |  | 4,675,171 |
Later Than One Month And Not Later Than Three Months [Member] | Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 30,969 |  | 2,412 |
Later Than One Month And Not Later Than Three Months [Member] | Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 759,519 |  | 39,267 |
Later Than One Month And Not Later Than Three Months [Member] | Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 624,167 |  | 404,575 |
Later Than One Month And Not Later Than Three Months [Member] | Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 427,825 |  | 120,361 |
Later Than One Month And Not Later Than Three Months [Member] | Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 4,905,414 |  | 4,108,556 |
Later Than One Month And Not Later Than Three Months [Member] | Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Later Than One Month And Not Later Than Three Months [Member] | Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Later Than One Month And Not Later Than Three Months [Member] | Deposits and interbank borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Later Than One Month And Not Later Than Three Months [Member] | Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 4,505,497 |  | 5,798,664 |
Total financial liabilities |  |  |  | 5,517,050 |
Not Later Than One Month [Member] | Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 5,155 |  | 934 |
Not Later Than One Month [Member] | Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 285,159 |  | 71,465 |
Not Later Than One Month [Member] | Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 363,560 |  | 16,310 |
Not Later Than One Month [Member] | Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 422,749 |  | 131,378 |
Not Later Than One Month [Member] | Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 5,184,567 |  | 5,248,418 |
Not Later Than One Month [Member] | Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 380,055 |  | 48,545 |
Not Later Than One Month [Member] | Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Not Later Than One Month [Member] | Deposits and interbank borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Not Later Than One Month [Member] | Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 4,520,659 |  | 2,827,613 |
Total financial liabilities |  | 11,793,782 |  | 9,786,584 |
Demand [Member] | Other financial liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 179,681 |  | 179,681 |
Demand [Member] | Issue debt instruments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Demand [Member] | Interbank Borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 39,378 |  | 39,378 |
Demand [Member] | Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Demand [Member] | Time deposits and other time liabilities [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 122,974 |  | 122,974 |
Demand [Member] | Obligations under repurchase agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  |  |
Demand [Member] | Cash items in process of being cleared [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  |  |  | 163,043 |
Demand [Member] | Deposits and interbank borrowings [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 8,741,417 |  | 8,741,417 |
Demand [Member] | Guarantees received (margin accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial liabilities |  | 540,091 |  | 540,091 |
Loans and accounts receivables at amortised cost [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 32,671,515 | [1] | 30,213,414 | [2]
Loans and accounts receivables at amortised cost [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 21,499,193 | [1] | 19,476,031 | [2]
Loans and accounts receivables at amortised cost [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 5,511,374 | [1] | 4,880,726 |
Loans and accounts receivables at amortised cost [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 11,699,613 | [1] | 10,765,393 |
Loans and accounts receivables at amortised cost [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 4,093,147 | [1] | 3,236,349 |
Loans and accounts receivables at amortised cost [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 5,706,433 | [1] | 5,474,289 |
Loans and accounts receivables at amortised cost [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 2,315,417 | [1] | 10,737,383 |
Loans and accounts receivables at amortised cost [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 2,400,909 | [1] | 128,024 |
Loans and accounts receivables at amortised cost [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 2,963,578 | [1] | 3,295,003 |
Loans and accounts receivables at amortised cost [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 296,461 | [1] | 238,212 |
Guarantee Deposits (Margin Accounts) [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 170,232 |  | 170,232 |
Guarantee Deposits (Margin Accounts) [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Guarantee Deposits (Margin Accounts) [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Guarantee Deposits (Margin Accounts) [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Guarantee Deposits (Margin Accounts) [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Guarantee Deposits (Margin Accounts) [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Guarantee Deposits (Margin Accounts) [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 314,616 |  | 170,232 |
Guarantee Deposits (Margin Accounts) [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Guarantee Deposits (Margin Accounts) [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Guarantee Deposits (Margin Accounts) [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 314,616 |  | 170,232 |
Equity instruments at fvoci [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  | 483 |
Equity instruments at fvoci [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 482 |  | 483 |
Equity instruments at fvoci [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Equity instruments at fvoci [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 482 |  | 481 |
Equity instruments at fvoci [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Equity instruments at fvoci [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Equity instruments at fvoci [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 1,187,382 |  |  |
Equity instruments at fvoci [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Equity instruments at fvoci [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Equity instruments at fvoci [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Debt Instruments At FVOCI [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  | 2,394,323 |
Debt Instruments At FVOCI [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 2,822,890 |  | 2,993 |
Total financial liabilities |  |  |  | 2,822,890 |
Debt Instruments At FVOCI [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 52,130 |  | 1 |
Debt Instruments At FVOCI [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 1,588,875 |  | 2,907 |
Debt Instruments At FVOCI [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 725,419 |  |  |
Debt Instruments At FVOCI [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 508,596 |  | 86 |
Debt Instruments At FVOCI [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 5,953 |  | 2,391,330 |
Debt Instruments At FVOCI [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 3,752 |  |  |
Debt Instruments At FVOCI [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 1,131,500 |  | 2,391,329 |
Debt Instruments At FVOCI [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Loans and account receivable at fvoci [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets | [3] | 66,166 |  | 68,694 |
Loans and account receivable at fvoci [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 60,213 | [4] | 43,400 |
Loans and account receivable at fvoci [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 5,953 | [4] | 25,294 |
Loans and account receivable at fvoci [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 60,213 | [4] | 38,451 |
Loans and account receivable at fvoci [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  | [4] |  |
Loans and account receivable at fvoci [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  | [4] | 4,949 |
Loans and account receivable at fvoci [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 11,172,322 | [4] | 25,294 |
Loans and account receivable at fvoci [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  | 2,323,442 |
Loans and account receivable at fvoci [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  | [4] |  |
Loans and account receivable at fvoci [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  | [4] |  |
Financial derivative contracts [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 8,148,608 |  | 3,100,635 |
Financial derivative contracts [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 3,103,369 |  | 2,317,621 |
Financial derivative contracts [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 1,543,446 |  | 543,722 |
Financial derivative contracts [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 3,103,369 |  | 1,041,866 |
Financial derivative contracts [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 1,346,329 |  | 552,133 |
Financial derivative contracts [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 1,383,493 |  | 723,622 |
Financial derivative contracts [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 783,014 |  | 783,014 |
Financial derivative contracts [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 400,196 |  |  |
Financial derivative contracts [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 371,775 |  | 111,268 |
Financial derivative contracts [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Investments Under Resale Agreements [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Available For Sale Investments [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 270,204 |  | 77,041 |
Available For Sale Investments [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 11,551 |  | 64,335 |
Available For Sale Investments [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 645 |  | 11,642 |
Available For Sale Investments [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 11,551 |  | 27,924 |
Available For Sale Investments [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 37,659 |  | 20,080 |
Available For Sale Investments [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 181,705 |  | 16,331 |
Available For Sale Investments [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 12,706 |  | 12,706 |
Available For Sale Investments [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Available For Sale Investments [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 38,644 |  | 1,064 |
Available For Sale Investments [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash Items In Process Of Collection [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 355,062 |  | 353,757 |
Cash Items In Process Of Collection [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash Items In Process Of Collection [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash Items In Process Of Collection [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash Items In Process Of Collection [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash Items In Process Of Collection [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash Items In Process Of Collection [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 353,757 |  | 353,757 |
Cash Items In Process Of Collection [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash Items In Process Of Collection [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash Items In Process Of Collection [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 355,062 |  | 353,757 |
Cash And Deposits In Banks [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 3,554,520 |  | 2,065,411 |
Cash And Deposits In Banks [Member] | More Than 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash And Deposits In Banks [Member] | More Than 3 Months To 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash And Deposits In Banks [Member] | Due After 5 Years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash And Deposits In Banks [Member] | Later than three years and not later than five years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash And Deposits In Banks [Member] | Between 1 and 3 years [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash And Deposits In Banks [Member] | Due Within 1 Year [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | 2,065,411 |  | 2,065,411 |
Cash And Deposits In Banks [Member] | Later Than One Month And Not Later Than Three Months [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash And Deposits In Banks [Member] | Not Later Than One Month [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  |  |  |  |
Cash And Deposits In Banks [Member] | Demand [Member] |  |  |  |  |
Disclosure of financial assets [line items] |  |  |  |  |
Total financial assets |  | $ 3,554,520 |  | $ 2,065,411 |
[1] | Loans and accounts receivables at amortised cost are presented on a gross basis, the amount of allowance is Ch$896,095 million.
[2] | Loans and accounts receivables at amortised cost are presented on a gross basis, the amount of allowance is Ch$ 882,414 million.
[3] | Loans and accounts receivables at fvoci are presented on a gross basis, the amount of allowance is Ch$106 million.
[4] | Loans and accounts receivables at fvoci are presented on a gross basis, the amount of allowance is Ch$101 million.

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