XML 235 R183.htm IDEA: XBRL DOCUMENT v3.20.1
Provisions - Undrawn Credit Lines - ECL Exposures (Details) - Undrawn credit lines [Member] - CLP ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure of other provisions [line items]    
Exposure as at beginning of period $ 20,386 $ 18,971
Net change on exposures 1,598 (577)
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 (580) 1,554
Changes to models and assumptions (346)  
Foreign exchange adjustments (242) 438
Exposure as at ending of period 20,816 20,386
Stage 1 - Individual [Member]    
Disclosure of other provisions [line items]    
Exposure as at beginning of period 1,634 937
Net change on exposures (1,229) 684
Transfer to Stage 1 88 99
Transfer to Stage 2 (113) (87)
Transfer to Stage 3
Impact on year-end ECL of exposures transferred between stages during the year (35) (3)
Changes to models and assumptions (112)  
Foreign exchange adjustments 1 4
Exposure as at ending of period 234 1,634
Stage 1 - Group [Member]    
Disclosure of other provisions [line items]    
Exposure as at beginning of period 9,123 8,071
Net change on exposures 4,832 2,796
Transfer to Stage 1 6,162 1,463
Transfer to Stage 2 (6,056) (3,246)
Transfer to Stage 3 (149) (92)
Impact on year-end ECL of exposures transferred between stages during the year (389) 31
Changes to models and assumptions (269)  
Foreign exchange adjustments (119) 100
Exposure as at ending of period 13,135 9,123
Stage 2 - Individual [Member]    
Disclosure of other provisions [line items]    
Exposure as at beginning of period 137 147
Net change on exposures 25 21
Transfer to Stage 1 (87) (96)
Transfer to Stage 2 191 124
Transfer to Stage 3 (12) (5)
Impact on year-end ECL of exposures transferred between stages during the year (129) (56)
Changes to models and assumptions 63  
Foreign exchange adjustments (3) 2
Exposure as at ending of period 185 137
Stage 2 - Group [Member]    
Disclosure of other provisions [line items]    
Exposure as at beginning of period 4,194 4,747
Net change on exposures (1,245) (2,669)
Transfer to Stage 1 (6,141) (817)
Transfer to Stage 2 7,838 3,898
Transfer to Stage 3 (792) (818)
Impact on year-end ECL of exposures transferred between stages during the year (1,116) (441)
Changes to models and assumptions (28)  
Foreign exchange adjustments (66) 294
Exposure as at ending of period 2,644 4,194
Stage 3 - Individual [Member]    
Disclosure of other provisions [line items]    
Exposure as at beginning of period
Net change on exposures 63 41
Transfer to Stage 1 (1) (4)
Transfer to Stage 2 (78) (37)
Transfer to Stage 3 12 5
Impact on year-end ECL of exposures transferred between stages during the year 83 (5)
Changes to models and assumptions  
Foreign exchange adjustments (1)
Exposure as at ending of period 78
Stage 3 - Group [Member]    
Disclosure of other provisions [line items]    
Exposure as at beginning of period 5,298 5,069
Net change on exposures (848) (1,450)
Transfer to Stage 1 (21) (645)
Transfer to Stage 2 (1,782) (652)
Transfer to Stage 3 941 910
Impact on year-end ECL of exposures transferred between stages during the year 1,006 2,028
Changes to models and assumptions  
Foreign exchange adjustments (54) 38
Exposure as at ending of period $ 4,540 $ 5,298