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Provisions - Performance Guarantees - Outstanding Exposures (Details) - Performance guarantees [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 | $ 2,232,682 | $ 2,220,828
Net change on exposures | 84,753 | (22,811)
Transfer to Stage 1 |  |
Transfer to Stage 2 |  |
Transfer to Stage 3 |  |
Foreign exchange adjustments | (34,045) | 34,665
Exposure as at ending of period | 2,283,390 | 2,232,682
Stage 1 - Individual [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 1,685,980 | 1,803,358
Net change on exposures | 129,463 | (6,282)
Transfer to Stage 1 | 249,755 | 189,344
Transfer to Stage 2 | (229,813) | (332,091)
Transfer to Stage 3 | (74) | (13)
Foreign exchange adjustments | (30,937) | 31,664
Exposure as at ending of period | 1,804,374 | 1,685,980
Stage 1 - Group [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 54,523 | 46,416
Net change on exposures | (10,568) | 8,008
Transfer to Stage 1 | 18,249 | 10,346
Transfer to Stage 2 | (17,111) | (9,034)
Transfer to Stage 3 | (729) | (1,304)
Foreign exchange adjustments | (39) | 91
Exposure as at ending of period | 44,325 | 54,523
Stage 2 - Individual [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 485,075 | 365,137
Net change on exposures | (38,887) | (23,779)
Transfer to Stage 1 | (249,755) | (189,279)
Transfer to Stage 2 | 230,906 | 332,365
Transfer to Stage 3 | (3,884) | (2,256)
Foreign exchange adjustments | (3,028) | 2,887
Exposure as at ending of period | 420,427 | 485,075
Stage 2 - Group [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 3,544 | 3,741
Net change on exposures | 8,898 | 1,963
Transfer to Stage 1 | (18,092) | (10,258)
Transfer to Stage 2 | 17,417 | 9,067
Transfer to Stage 3 | (792) | (975)
Foreign exchange adjustments | (5) | 6
Exposure as at ending of period | 10,970 | 3,544
Stage 3 - Individual [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 2,310 | 1,162
Net change on exposures | (2,950) | (786)
Transfer to Stage 1 |  | (65)
Transfer to Stage 2 | (1,093) | (274)
Transfer to Stage 3 | 3,958 | 2,269
Foreign exchange adjustments | (31) | 4
Exposure as at ending of period | 2,194 | 2,310
Stage 3 - Group [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 1,250 | 1,014
Net change on exposures | (1,203) | (1,935)
Transfer to Stage 1 | (157) | (88)
Transfer to Stage 2 | (306) | (33)
Transfer to Stage 3 | 1,521 | 2,279
Foreign exchange adjustments | (5) | 13
Exposure as at ending of period | $ 1,100 | $ 1,250

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- Definition The increase (decrease) in exposure to credit risk on loan commitments and financial guarantee contracts resulting from transfer to stage 1. + References No definition available. + Details
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- Definition The amount of the exposure to credit risk on loan commitments and financial guarantee contracts. [Refer: Loan commitments [member]; Financial guarantee contracts [member]; Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 35H -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_35H&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 35I -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_35I&doctype=Standard -URIDate 2019-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 35M -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_35M&doctype=Standard -URIDate 2019-03-27 + Details
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