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Risk Management - Portfolio Concentration Credit Risk Industry Sector (Details) - CLP ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure of credit risk exposure [line items]    
Financial assets $ 1,366,343 $ 1,053,191
Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 2,724,621 1,478,533
Hedge derivative contracts    
Disclosure of credit risk exposure [line items]    
Financial assets 61,594 35,414
Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 1,761,952 738,130
Swaps | Hedge derivative contracts    
Disclosure of credit risk exposure [line items]    
Financial assets 61,594 35,414
Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 956,632 735,444
FVOCI    
Disclosure of credit risk exposure [line items]    
Financial assets 1,366,343 1,053,191
FVOCI | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets   770,674
FVOCI | Instruments Issued By Chilean Government And Central Bank [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets   164,222
FVOCI | Instruments Issued By Foreign Institutions [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets   108,544
FVOCI | Debt Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets 1,357,846 1,043,440
Put Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 1,076 120
Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 4,961 4,839
Financial assets held-for-trading    
Disclosure of credit risk exposure [line items]    
Financial assets 1,872,355 1,745,366
Financial assets held-for-trading | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets 375,337 129,607
Financial assets held-for-trading | Instruments Issued By Chilean Government And Central Bank [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 1,123,689 1,523,472
Financial assets held-for-trading | Mutual fund investments    
Disclosure of credit risk exposure [line items]    
Financial assets 373,329 87,841
Financial assets held-for-trading | Instruments Issued By Foreign Institutions [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 4,446
Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 30,033,272 27,926,632
Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 16,294,212 15,438,398
Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 142,329 97,289
Mortgages    
Disclosure of credit risk exposure [line items]    
Financial assets 9,206,727 8,052,073
Consumer loans    
Disclosure of credit risk exposure [line items]    
Financial assets 4,532,333 4,436,161
Foreign Banks    
Disclosure of credit risk exposure [line items]    
Financial assets 360,131 294,542
Domestic Banks    
Disclosure of credit risk exposure [line items]    
Financial assets 150,007 100,023
Loans and advances to banks    
Disclosure of credit risk exposure [line items]    
Financial assets 1,140,191 1,495,396
Cash and due from banks    
Disclosure of credit risk exposure [line items]    
Financial assets 2,392,166 880,081
Chilean Central Bank    
Disclosure of credit risk exposure [line items]    
Financial assets 630,053 1,100,831
Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 8,497 9,751
Financial Instruments Available For Sale [Member] | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets 1,228,931  
Financial Instruments Available For Sale [Member] | Instruments Issued By Chilean Government And Central Bank [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 109,062  
Financial Instruments Available For Sale [Member] | Instruments Issued By Foreign Institutions [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 19,853  
Corporate loans    
Disclosure of credit risk exposure [line items]    
Financial assets 11,705,859
Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets 7,446 8,939
Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets 1,051 812
Transportation and telecommunications | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 14,456 2,333
Transportation and telecommunications | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 12,526 2,235
Transportation and telecommunications | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 1,930 98
Transportation and telecommunications | FVOCI    
Disclosure of credit risk exposure [line items]    
Financial assets   4,938
Transportation and telecommunications | FVOCI | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets   4,938
Transportation and telecommunications | FVOCI | Debt Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets   4,938
Transportation and telecommunications | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets  
Transportation and telecommunications | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 1,234,087 1,498,142
Transportation and telecommunications | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 1,234,087 1,498,142
Transportation and telecommunications | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 8,665 15,637
Transportation and telecommunications | Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Transportation and telecommunications | Financial Instruments Available For Sale [Member] | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets  
Transportation and telecommunications | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Transportation and telecommunications | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Transportation and telecommunications | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Trade | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 28,129 59,550
Trade | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 9,813 51,916
Trade | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 16,225 7,194
Trade | FVOCI    
Disclosure of credit risk exposure [line items]    
Financial assets   22,390
Trade | FVOCI | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets   22,390
Trade | FVOCI | Debt Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets   22,390
Trade | Put Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 522 51
Trade | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 1,569 389
Trade | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 2,066,372 2,324,325
Trade | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 2,066,372 2,324,325
Trade | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 40,642 37,520
Trade | Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Trade | Financial Instruments Available For Sale [Member] | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets  
Trade | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Trade | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Trade | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Services | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 687 74,582
Services | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 74,250
Services | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 497 296
Services | Put Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets  
Services | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 190 36
Services | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 2,267,869 2,109,491
Services | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 2,267,869 2,109,491
Services | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 985
Services | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Services | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Services | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Other | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 425,280 325,783
Other | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 9,923 655
Other | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 415,319 325,117
Other | FVOCI    
Disclosure of credit risk exposure [line items]    
Financial assets 46,162 54,445
Other | FVOCI | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets 46,162 54,445
Other | FVOCI | Debt Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets 46,162 54,445
Other | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 38 11
Other | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 1,676,677 1,398,237
Other | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 1,676,677 1,398,237
Other | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 3,441 736
Other | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Other | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Other | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Mining | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 2,875 62
Mining | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 19 22
Mining | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 40
Mining | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 604,660 453,549
Mining | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 604,660 453,549
Mining | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 2,067 5,017
Mining | Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Mining | Financial Instruments Available For Sale [Member] | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets  
Mining | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Mining | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Mining | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Manufacturing | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 8,077 20,697
Manufacturing | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 7,718 7,348
Manufacturing | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 79 13,328
Manufacturing | Put Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 5
Manufacturing | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 280 16
Manufacturing | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 1,624,972 1,579,475
Manufacturing | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 1,624,972 1,579,475
Manufacturing | Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Manufacturing | Financial Instruments Available For Sale [Member] | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets  
Manufacturing | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets  
Manufacturing | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Manufacturing | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Government | FVOCI    
Disclosure of credit risk exposure [line items]    
Financial assets 16,238 29,077
Government | FVOCI | Instruments Issued By Chilean Government And Central Bank [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 16,238 29,077
Government | FVOCI | Debt Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets 16,238 29,077
Government | Financial assets held-for-trading    
Disclosure of credit risk exposure [line items]    
Financial assets 99,164 88,486
Government | Financial assets held-for-trading | Instruments Issued By Chilean Government And Central Bank [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 99,164 88,486
Government | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 18,460  
Government | Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Government | Financial Instruments Available For Sale [Member] | Instruments Issued By Chilean Government And Central Bank [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Government | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Government | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Government | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Financial Services | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 2,175,067 960,482
Financial Services | Hedge derivative contracts    
Disclosure of credit risk exposure [line items]    
Financial assets 61,594 35,414
Financial Services | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 1,693,048 584,743
Financial Services | Swaps | Hedge derivative contracts    
Disclosure of credit risk exposure [line items]    
Financial assets 61,594 35,414
Financial Services | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 480,269 374,006
Financial Services | FVOCI    
Disclosure of credit risk exposure [line items]    
Financial assets 1,023,008 798,951
Financial Services | FVOCI | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets 994,658 680,656
Financial Services | FVOCI | Instruments Issued By Foreign Institutions [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 19,853 108,544
Financial Services | FVOCI | Debt Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets 1,014,511 789,200
Financial Services | Put Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 554 64
Financial Services | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 1,196 1,669
Financial Services | Financial assets held-for-trading    
Disclosure of credit risk exposure [line items]    
Financial assets 748,666 221,894
Financial Services | Financial assets held-for-trading | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets 375,337 129,607
Financial Services | Financial assets held-for-trading | Mutual fund investments    
Disclosure of credit risk exposure [line items]    
Financial assets 373,329 87,841
Financial Services | Financial assets held-for-trading | Instruments Issued By Foreign Institutions [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 4,446
Financial Services | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 2,587,559 2,122,599
Financial Services | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 2,587,559 2,122,599
Financial Services | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 66,285 29,031
Financial Services | Foreign Banks    
Disclosure of credit risk exposure [line items]    
Financial assets 360,131 294,542
Financial Services | Domestic Banks    
Disclosure of credit risk exposure [line items]    
Financial assets 150,007 100,023
Financial Services | Loans and advances to banks    
Disclosure of credit risk exposure [line items]    
Financial assets 510,138 394,565
Financial Services | Cash and due from banks    
Disclosure of credit risk exposure [line items]    
Financial assets 2,213,737 758,274
Financial Services | Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Financial Services | Financial Instruments Available For Sale [Member] | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets  
Financial Services | Financial Instruments Available For Sale [Member] | Instruments Issued By Foreign Institutions [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Financial Services | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets 7,446 8,939
Financial Services | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets 1,051 812
Financial Services | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets 8,497 9,751
Fishing | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 5,088 2,740
Fishing | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 4,275 2,249
Fishing | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 642 411
Fishing | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 171 80
Fishing | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 140,709 156,472
Fishing | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 140,709 156,472
Fishing | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 35 59
Fishing | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Fishing | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Fishing | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Electricity, Gas and Water | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 37,087 15,404
Electricity, Gas and Water | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 14,184 4,026
Electricity, Gas and Water | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 22,903 10,288
Electricity, Gas and Water | FVOCI    
Disclosure of credit risk exposure [line items]    
Financial assets 9,667 8,245
Electricity, Gas and Water | FVOCI | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets 9,667 8,245
Electricity, Gas and Water | FVOCI | Debt Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets 9,667 8,245
Electricity, Gas and Water | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 1,090
Electricity, Gas and Water | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 325,143 461,351
Electricity, Gas and Water | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 325,143 461,351
Electricity, Gas and Water | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 1,533 4,466
Electricity, Gas and Water | Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Electricity, Gas and Water | Financial Instruments Available For Sale [Member] | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets  
Electricity, Gas and Water | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Electricity, Gas and Water | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Electricity, Gas and Water | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Construction | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 571 1,194
Construction | Debt Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets 178,444  
Construction | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 210 680
Construction | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 277 455
Construction | FVOCI    
Disclosure of credit risk exposure [line items]    
Financial assets 178,444  
Construction | FVOCI | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets 178,444  
Construction | Put Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets  
Construction | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 84 59
Construction | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 2,142,699 1,752,237
Construction | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 2,142,699 1,752,237
Construction | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Construction | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Construction | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Chilean Central Bank | FVOCI    
Disclosure of credit risk exposure [line items]    
Financial assets 92,824 135,145
Chilean Central Bank | FVOCI | Instruments Issued By Chilean Government And Central Bank [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 92,824 135,145
Chilean Central Bank | FVOCI | Debt Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets 92,824 135,145
Chilean Central Bank | Financial assets held-for-trading    
Disclosure of credit risk exposure [line items]    
Financial assets 1,024,525 1,434,986
Chilean Central Bank | Financial assets held-for-trading | Instruments Issued By Chilean Government And Central Bank [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets 1,024,525 1,434,986
Chilean Central Bank | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 742
Chilean Central Bank | Loans and advances to banks    
Disclosure of credit risk exposure [line items]    
Financial assets 630,053 1,100,831
Chilean Central Bank | Cash and due from banks    
Disclosure of credit risk exposure [line items]    
Financial assets 178,429 121,807
Chilean Central Bank | Chilean Central Bank    
Disclosure of credit risk exposure [line items]    
Financial assets 630,053 1,100,831
Chilean Central Bank | Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Chilean Central Bank | Financial Instruments Available For Sale [Member] | Instruments Issued By Chilean Government And Central Bank [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Chilean Central Bank | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Chilean Central Bank | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Chilean Central Bank | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Agriculture and livestock | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 25,768 15,706
Agriculture and livestock | Swaps | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 10,232 10,006
Agriculture and livestock | Forward Contract [Member] | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 14,103 4,211
Agriculture and livestock | Put Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets  
Agriculture and livestock | Call Options | Derivative contracts for trading purposes    
Disclosure of credit risk exposure [line items]    
Financial assets 1,433 1,489
Agriculture and livestock | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 1,623,465 1,582,520
Agriculture and livestock | Commercial loans    
Disclosure of credit risk exposure [line items]    
Financial assets 1,623,465 1,582,520
Agriculture and livestock | Cash collateral on securities borrowed and reverse repurchase agreements    
Disclosure of credit risk exposure [line items]    
Financial assets 902 3,096
Agriculture and livestock | Financial Instruments Available For Sale [Member]    
Disclosure of credit risk exposure [line items]    
Financial assets  
Agriculture and livestock | Financial Instruments Available For Sale [Member] | Other instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets  
Agriculture and livestock | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Agriculture and livestock | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Agriculture and livestock | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets
Retail | Loans to customers    
Disclosure of credit risk exposure [line items]    
Financial assets 13,739,060 12,488,234
Retail | Mortgages    
Disclosure of credit risk exposure [line items]    
Financial assets 9,206,727 8,052,073
Retail | Consumer loans    
Disclosure of credit risk exposure [line items]    
Financial assets 4,532,333 4,436,161
Retail | Instruments issued in Chile    
Disclosure of credit risk exposure [line items]    
Financial assets
Retail | Instruments issued abroad    
Disclosure of credit risk exposure [line items]    
Financial assets
Retail | Equity Instruments    
Disclosure of credit risk exposure [line items]    
Financial assets