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Financial Assets at Fair Value through Other Comprehensive Income (Details) - Schedule of changes in the corresponding ECLs of debt instrument - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Fair Value [Member]    
Financial Assets at Fair Value through Other Comprehensive Income (Details) - Schedule of changes in the corresponding ECLs of debt instrument [Line Items]    
Financial assets at beginning of period $ 1,357,846 $ 1,043,440
Net change on Balance [1] (306,904) 275,778
Change in fair value 14,211 32,995
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]
Impact of net re-measurement of year-end ECL
Amounts written off
Foreign exchange adjustments (4,630) 5,633
Financial assets at end of period 1,060,523 1,357,846
Fair Value [Member] | Stage 1 Individual [Member]    
Financial Assets at Fair Value through Other Comprehensive Income (Details) - Schedule of changes in the corresponding ECLs of debt instrument [Line Items]    
Financial assets at beginning of period 1,357,846 1,043,440
Net change on Balance [1] (306,649) 275,797
Change in fair value 14,217 32,995
Transfer to Stage 1
Transfer to Stage 2 (477) (19)
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year ** [2]
Impact of net re-measurement of year-end ECL
Amounts written off
Foreign exchange adjustments (4,630) 5,633
Financial assets at end of period 1,060,307 1,357,846
Fair Value [Member] | Stage 2 Individual [Member]    
Financial Assets at Fair Value through Other Comprehensive Income (Details) - Schedule of changes in the corresponding ECLs of debt instrument [Line Items]    
Financial assets at beginning of period
Net change on Balance [1] (255) (19)
Change in fair value (6)
Transfer to Stage 1
Transfer to Stage 2 477 19
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year ** [2]
Impact of net re-measurement of year-end ECL
Amounts written off
Foreign exchange adjustments
Financial assets at end of period 216
Fair Value [Member] | Stage 3 Individual [Member]    
Financial Assets at Fair Value through Other Comprehensive Income (Details) - Schedule of changes in the corresponding ECLs of debt instrument [Line Items]    
Financial assets at beginning of period
Net change on Balance [1]
Change in fair value
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]
Impact of net re-measurement of year-end ECL
Amounts written off
Foreign exchange adjustments
Financial assets at end of period
ECL [Member]    
Financial Assets at Fair Value through Other Comprehensive Income (Details) - Schedule of changes in the corresponding ECLs of debt instrument [Line Items]    
Financial assets at beginning of period 7,736 4,268
Net change on Balance [1] 1,512 326
Change in fair value
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] 1
Impact of net re-measurement of year-end ECL (6,120) 3,102
Amounts written off
Foreign exchange adjustments (45) 40
Financial assets at end of period 3,084 7,736
ECL [Member] | Stage 1 Individual [Member]    
Financial Assets at Fair Value through Other Comprehensive Income (Details) - Schedule of changes in the corresponding ECLs of debt instrument [Line Items]    
Financial assets at beginning of period 7,736 4,268
Net change on Balance [1] 1,519 327
Change in fair value
Transfer to Stage 1
Transfer to Stage 2 (12) (1)
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year ** [2]
Impact of net re-measurement of year-end ECL (6,120) 3,102
Amounts written off
Foreign exchange adjustments (45) 40
Financial assets at end of period 3,078 7,736
ECL [Member] | Stage 2 Individual [Member]    
Financial Assets at Fair Value through Other Comprehensive Income (Details) - Schedule of changes in the corresponding ECLs of debt instrument [Line Items]    
Financial assets at beginning of period
Net change on Balance [1] (7) (1)
Change in fair value
Transfer to Stage 1
Transfer to Stage 2 12 1
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year ** [2] 1
Impact of net re-measurement of year-end ECL
Amounts written off
Foreign exchange adjustments
Financial assets at end of period 6
ECL [Member] | Stage 3 Individual [Member]    
Financial Assets at Fair Value through Other Comprehensive Income (Details) - Schedule of changes in the corresponding ECLs of debt instrument [Line Items]    
Financial assets at beginning of period
Net change on Balance [1]
Change in fair value
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]
Impact of net re-measurement of year-end ECL
Amounts written off
Foreign exchange adjustments
Financial assets at end of period
[1] Net change between assets purchased and assets derecognized, 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.