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Loans and Advances to Banks, net (Details) - Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage - Individual [Member] - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Loans and Advances to Banks, net (Details) - Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage [Line Items]    
Financial assets at beginning of period $ 110 $ 1,012
Net change on Balance [1] (110) (880)
Transfer to Stage 1
Transfer to Stage 2
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year [2]
Changes to models and assumptions 458
Amounts written off
Foreign exchange adjustments (22)
Financial assets at end of period 458 110
Stage 1 [Member]    
Loans and Advances to Banks, net (Details) - Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage [Line Items]    
Financial assets at beginning of period 84 937
Net change on Balance [1] (84) (832)
Transfer to Stage 1 26
Transfer to Stage 2 (27)
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year [2]
Changes to models and assumptions 458
Amounts written off
Foreign exchange adjustments (20)
Financial assets at end of period 458 84
Stage 2 [Member]    
Loans and Advances to Banks, net (Details) - Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage [Line Items]    
Financial assets at beginning of period 26 75
Net change on Balance [1] (26) (48)
Transfer to Stage 1 (26)
Transfer to Stage 2 27
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year [2]
Changes to models and assumptions
Amounts written off
Foreign exchange adjustments (2)
Financial assets at end of period 26
Stage 3 [Member]    
Loans and Advances to Banks, net (Details) - Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage [Line Items]    
Financial assets at beginning of period
Net change on Balance [1]
Transfer to Stage 1
Transfer to Stage 2
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year [2]
Changes to models and assumptions
Amounts written off
Foreign exchange adjustments
Financial assets at end of period
Gross Carrying Amount [Member]    
Loans and Advances to Banks, net (Details) - Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage [Line Items]    
Financial assets at beginning of period 1,140,191 1,495,396
Net change on Balance [1] 1,800,025 (327,712)
Transfer to Stage 1
Transfer to Stage 2
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year [2]
Changes to models and assumptions
Amounts written off
Foreign exchange adjustments (560) (27,493)
Financial assets at end of period 2,939,656 1,140,191
Gross Carrying Amount [Member] | Stage 1 [Member]    
Loans and Advances to Banks, net (Details) - Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage [Line Items]    
Financial assets at beginning of period 1,018,551 1,467,502
Net change on Balance [1] 1,845,572 (321,373)
Transfer to Stage 1 86,986 16,405
Transfer to Stage 2 (126,709)
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year [2]
Changes to models and assumptions
Amounts written off
Foreign exchange adjustments (11,453) (17,274)
Financial assets at end of period 2,939,656 1,018,551
Gross Carrying Amount [Member] | Stage 2 [Member]    
Loans and Advances to Banks, net (Details) - Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage [Line Items]    
Financial assets at beginning of period 121,640 27,894
Net change on Balance [1] (45,547) (6,339)
Transfer to Stage 1 (86,986) (16,405)
Transfer to Stage 2 126,709
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year [2]
Changes to models and assumptions
Amounts written off
Foreign exchange adjustments 10,893 (10,219)
Financial assets at end of period 121,640
Gross Carrying Amount [Member] | Stage 3 [Member]    
Loans and Advances to Banks, net (Details) - Schedule of changes in gross carrying amount and corresponding allowance for ECL by stage [Line Items]    
Financial assets at beginning of period
Net change on Balance [1]
Transfer to Stage 1
Transfer to Stage 2
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year [2]
Changes to models and assumptions
Amounts written off
Foreign exchange adjustments
Financial assets at end of period
[1] Net change between assets originated and assets repaid, excluding write offs.
[2] Represents the change in the year-end ECLs of exposures that were transferred from one stage to another during the year.