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Financial Assets at Amortized Cost (Details) - Schedule of Bank’s Loan Portfolio - CLP ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Credit and Contingent Loans Exposure [Member]    
Financial Assets at Amortized Cost (Details) - Schedule of Bank’s Loan Portfolio [Line Items]    
Loans and advances to Banks $ 2,519,931 $ 2,174,792
Commercial loans    
Loans to customers 20,030,044 20,308,745
Allowances Established [Member]    
Financial Assets at Amortized Cost (Details) - Schedule of Bank’s Loan Portfolio [Line Items]    
Loans and advances to Banks (1,341) (1,641)
Commercial loans    
Loans to customers (259,641) (321,467)
Domestic Loans [Member] | Credit and Contingent Loans Exposure [Member]    
Financial Assets at Amortized Cost (Details) - Schedule of Bank’s Loan Portfolio [Line Items]    
Loans and advances to Banks 2,100,933 1,801,100
Commercial loans    
Loans to customers 20,008,787 20,279,201
Domestic Loans [Member] | Allowances Established [Member]    
Financial Assets at Amortized Cost (Details) - Schedule of Bank’s Loan Portfolio [Line Items]    
Loans and advances to Banks
Commercial loans    
Loans to customers (259,349) (321,208)
Foreign Loans [Member] | Credit and Contingent Loans Exposure [Member]    
Financial Assets at Amortized Cost (Details) - Schedule of Bank’s Loan Portfolio [Line Items]    
Loans and advances to Banks 418,998 373,692
Commercial loans    
Loans to customers 21,257 29,544
Foreign Loans [Member] | Allowances Established [Member]    
Financial Assets at Amortized Cost (Details) - Schedule of Bank’s Loan Portfolio [Line Items]    
Loans and advances to Banks (1,341) (1,641)
Commercial loans    
Loans to customers (292) (259)
Gross carrying amount [member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 13,547,435 12,890,795
Gross carrying amount [member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (89,640) (143,489)
Gross carrying amount [member] | Agriculture and livestock [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 788,942 797,920
Gross carrying amount [member] | Agriculture and livestock [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (9,046) (11,310)
Gross carrying amount [member] | Fruit [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 646,608 663,630
Gross carrying amount [member] | Fruit [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (4,456) (4,903)
Gross carrying amount [member] | Forestry [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 101,406 102,548
Gross carrying amount [member] | Forestry [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (1,352) (1,369)
Gross carrying amount [member] | Fishing [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 26,339 30,513
Gross carrying amount [member] | Fishing [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (788) (1,331)
Gross carrying amount [member] | Mining [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 417,164 314,890
Gross carrying amount [member] | Mining [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,532) (4,666)
Gross carrying amount [member] | Oil and natural gas [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 416 1,011
Gross carrying amount [member] | Oil and natural gas [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (8) (15)
Gross carrying amount [member] | Foods, beverages and tobacco [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 513,197 594,923
Gross carrying amount [member] | Foods, beverages and tobacco [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (10,565) (12,316)
Gross carrying amount [member] | Textiles, leather goods and footwear [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 33,100 33,145
Gross carrying amount [member] | Textiles, leather goods and footwear [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (599) (625)
Gross carrying amount [member] | Woods and furnitures [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 78,409 105,551
Gross carrying amount [member] | Woods and furnitures [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (1,295) (1,553)
Gross carrying amount [member] | Cellulose, Paper and printing [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 16,931 20,974
Gross carrying amount [member] | Cellulose, Paper and printing [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (591) (598)
Gross carrying amount [member] | Chemicals and petroleum products [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 298,883 365,239
Gross carrying amount [member] | Chemicals and petroleum products [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,046) (3,290)
Gross carrying amount [member] | Metal, non-metal, machine or others [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 551,922 574,496
Gross carrying amount [member] | Metal, non-metal, machine or others [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (7,367) (9,612)
Gross carrying amount [member] | Electricity, gas and water [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 439,473 463,558
Gross carrying amount [member] | Electricity, gas and water [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,361) (3,784)
Gross carrying amount [member] | Residential construction [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 265,086 271,923
Gross carrying amount [member] | Residential construction [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (9,699) (10,596)
Gross carrying amount [member] | Non-residential construction (office, civil engineering) [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 409,154 356,241
Gross carrying amount [member] | Non-residential construction (office, civil engineering) [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (11,060) (8,432)
Gross carrying amount [member] | Wholesale [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,798,723 2,037,033
Gross carrying amount [member] | Wholesale [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (34,250) (33,387)
Gross carrying amount [member] | Retail, restaurants and hotels [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,016,553 1,049,042
Gross carrying amount [member] | Retail, restaurants and hotels [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (34,404) (39,240)
Gross carrying amount [member] | Transport and storage [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,105,436 1,210,250
Gross carrying amount [member] | Transport and storage [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (16,599) (21,849)
Gross carrying amount [member] | Communications [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 102,522 232,984
Gross carrying amount [member] | Communications [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,121) (3,989)
Gross carrying amount [member] | Financial services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 3,219,991 2,990,516
Gross carrying amount [member] | Financial services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (9,217) (12,372)
Gross carrying amount [member] | Business services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,976,971 2,023,906
Gross carrying amount [member] | Business services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (38,908) (48,802)
Gross carrying amount [member] | Real estate services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 3,380,997 3,342,071
Gross carrying amount [member] | Real estate services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (16,259) (41,833)
Gross carrying amount [member] | Student loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 56,924 59,753
Gross carrying amount [member] | Student loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,744) (3,628)
Gross carrying amount [member] | Government administration, defence and police force [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 21,438 26,146
Gross carrying amount [member] | Government administration, defence and police force [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (269) (317)
Gross carrying amount [member] | Social services and other community services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 900,822 833,275
Gross carrying amount [member] | Social services and other community services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (13,044) (13,933)
Gross carrying amount [member] | Personal services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,862,637 1,807,207
Gross carrying amount [member] | Personal services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (28,061) (27,717)
Gross carrying amount [member] | Residential mortgage loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 12,310,768 11,422,322
Gross carrying amount [member] | Residential mortgage loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (33,502) (50,646)
Gross carrying amount [member] | Consumer loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 5,310,462 4,995,230
Gross carrying amount [member] | Consumer loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (417,044) (449,496)
Gross carrying amount [member] | Domestic Loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 13,547,435 12,890,795
Gross carrying amount [member] | Domestic Loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (89,640) (143,489)
Gross carrying amount [member] | Domestic Loans [Member] | Agriculture and livestock [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 788,942 797,920
Gross carrying amount [member] | Domestic Loans [Member] | Agriculture and livestock [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (9,046) (11,310)
Gross carrying amount [member] | Domestic Loans [Member] | Fruit [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 646,608 663,630
Gross carrying amount [member] | Domestic Loans [Member] | Fruit [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (4,456) (4,903)
Gross carrying amount [member] | Domestic Loans [Member] | Forestry [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 101,406 102,548
Gross carrying amount [member] | Domestic Loans [Member] | Forestry [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (1,352) (1,369)
Gross carrying amount [member] | Domestic Loans [Member] | Fishing [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 26,339 30,513
Gross carrying amount [member] | Domestic Loans [Member] | Fishing [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (788) (1,331)
Gross carrying amount [member] | Domestic Loans [Member] | Mining [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 417,164 314,890
Gross carrying amount [member] | Domestic Loans [Member] | Mining [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,532) (4,666)
Gross carrying amount [member] | Domestic Loans [Member] | Oil and natural gas [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 416 1,011
Gross carrying amount [member] | Domestic Loans [Member] | Oil and natural gas [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (8) (15)
Gross carrying amount [member] | Domestic Loans [Member] | Foods, beverages and tobacco [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 513,197 594,923
Gross carrying amount [member] | Domestic Loans [Member] | Foods, beverages and tobacco [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (10,565) (12,316)
Gross carrying amount [member] | Domestic Loans [Member] | Textiles, leather goods and footwear [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 33,100 33,145
Gross carrying amount [member] | Domestic Loans [Member] | Textiles, leather goods and footwear [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (599) (625)
Gross carrying amount [member] | Domestic Loans [Member] | Woods and furnitures [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 78,409 105,551
Gross carrying amount [member] | Domestic Loans [Member] | Woods and furnitures [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (1,295) (1,553)
Gross carrying amount [member] | Domestic Loans [Member] | Cellulose, Paper and printing [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 16,931 20,974
Gross carrying amount [member] | Domestic Loans [Member] | Cellulose, Paper and printing [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (591) (598)
Gross carrying amount [member] | Domestic Loans [Member] | Chemicals and petroleum products [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 298,883 365,239
Gross carrying amount [member] | Domestic Loans [Member] | Chemicals and petroleum products [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,046) (3,290)
Gross carrying amount [member] | Domestic Loans [Member] | Metal, non-metal, machine or others [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 551,922 574,496
Gross carrying amount [member] | Domestic Loans [Member] | Metal, non-metal, machine or others [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (7,367) (9,612)
Gross carrying amount [member] | Domestic Loans [Member] | Electricity, gas and water [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 438,147 463,558
Gross carrying amount [member] | Domestic Loans [Member] | Electricity, gas and water [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,342) (3,784)
Gross carrying amount [member] | Domestic Loans [Member] | Residential construction [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 265,086 271,923
Gross carrying amount [member] | Domestic Loans [Member] | Residential construction [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (9,699) (10,596)
Gross carrying amount [member] | Domestic Loans [Member] | Non-residential construction (office, civil engineering) [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 409,154 356,241
Gross carrying amount [member] | Domestic Loans [Member] | Non-residential construction (office, civil engineering) [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (11,060) (8,432)
Gross carrying amount [member] | Domestic Loans [Member] | Wholesale [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,798,723 2,037,033
Gross carrying amount [member] | Domestic Loans [Member] | Wholesale [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (34,250) (33,387)
Gross carrying amount [member] | Domestic Loans [Member] | Retail, restaurants and hotels [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,016,553 1,042,290
Gross carrying amount [member] | Domestic Loans [Member] | Retail, restaurants and hotels [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (34,404) (39,141)
Gross carrying amount [member] | Domestic Loans [Member] | Transport and storage [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,105,436 1,210,250
Gross carrying amount [member] | Domestic Loans [Member] | Transport and storage [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (16,599) (21,849)
Gross carrying amount [member] | Domestic Loans [Member] | Communications [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 102,522 232,984
Gross carrying amount [member] | Domestic Loans [Member] | Communications [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,121) (3,989)
Gross carrying amount [member] | Domestic Loans [Member] | Financial services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 3,219,991 2,990,516
Gross carrying amount [member] | Domestic Loans [Member] | Financial services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (9,217) (12,372)
Gross carrying amount [member] | Domestic Loans [Member] | Business services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,976,971 2,004,481
Gross carrying amount [member] | Domestic Loans [Member] | Business services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (38,908) (48,666)
Gross carrying amount [member] | Domestic Loans [Member] | Real estate services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 3,361,066 3,338,704
Gross carrying amount [member] | Domestic Loans [Member] | Real estate services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (15,986) (41,809)
Gross carrying amount [member] | Domestic Loans [Member] | Student loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 56,924 59,753
Gross carrying amount [member] | Domestic Loans [Member] | Student loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (2,744) (3,628)
Gross carrying amount [member] | Domestic Loans [Member] | Government administration, defence and police force [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 21,438 26,146
Gross carrying amount [member] | Domestic Loans [Member] | Government administration, defence and police force [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (269) (317)
Gross carrying amount [member] | Domestic Loans [Member] | Social services and other community services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 900,822 833,275
Gross carrying amount [member] | Domestic Loans [Member] | Social services and other community services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (13,044) (13,933)
Gross carrying amount [member] | Domestic Loans [Member] | Personal services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,862,637 1,807,207
Gross carrying amount [member] | Domestic Loans [Member] | Personal services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (28,061) (27,717)
Gross carrying amount [member] | Domestic Loans [Member] | Residential mortgage loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 12,310,768 11,422,322
Gross carrying amount [member] | Domestic Loans [Member] | Residential mortgage loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (33,502) (50,646)
Gross carrying amount [member] | Domestic Loans [Member] | Consumer loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 5,310,462 4,995,230
Gross carrying amount [member] | Domestic Loans [Member] | Consumer loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (417,044) (449,496)
Gross carrying amount [member] | Foreign Loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Agriculture and livestock [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Agriculture and livestock [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Fruit [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Fruit [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Forestry [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Forestry [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Fishing [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Fishing [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Mining [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Mining [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Oil and natural gas [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Oil and natural gas [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Foods, beverages and tobacco [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Foods, beverages and tobacco [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Textiles, leather goods and footwear [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Textiles, leather goods and footwear [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Woods and furnitures [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Woods and furnitures [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Cellulose, Paper and printing [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Cellulose, Paper and printing [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Chemicals and petroleum products [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Chemicals and petroleum products [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Metal, non-metal, machine or others [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Metal, non-metal, machine or others [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Electricity, gas and water [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 1,326
Gross carrying amount [member] | Foreign Loans [Member] | Electricity, gas and water [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (19)
Gross carrying amount [member] | Foreign Loans [Member] | Residential construction [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Residential construction [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Non-residential construction (office, civil engineering) [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Non-residential construction (office, civil engineering) [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Wholesale [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Wholesale [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Retail, restaurants and hotels [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 6,752
Gross carrying amount [member] | Foreign Loans [Member] | Retail, restaurants and hotels [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (99)
Gross carrying amount [member] | Foreign Loans [Member] | Transport and storage [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Transport and storage [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Communications [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Communications [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Financial services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Financial services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Business services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 19,425
Gross carrying amount [member] | Foreign Loans [Member] | Business services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (136)
Gross carrying amount [member] | Foreign Loans [Member] | Real estate services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers 19,931 3,367
Gross carrying amount [member] | Foreign Loans [Member] | Real estate services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers (273) (24)
Gross carrying amount [member] | Foreign Loans [Member] | Student loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Student loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Government administration, defence and police force [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Government administration, defence and police force [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Social services and other community services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Social services and other community services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Personal services [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Personal services [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Residential mortgage loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Residential mortgage loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Consumer loans [Member] | Credit and Contingent Loans Exposure [Member]    
Commercial loans    
Loans to customers
Gross carrying amount [member] | Foreign Loans [Member] | Consumer loans [Member] | Allowances Established [Member]    
Commercial loans    
Loans to customers