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Provisions - Undrawn Credit Lines - Outstanding 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 | $ 7,769,325 | $ 7,240,406
Net change on exposures | 329,925 | 601,223
Transfer to Stage 1 |  |
Transfer to Stage 2 |  |
Transfer to Stage 3 |  |
Foreign exchange adjustments | (228,990) | (72,304)
Exposure as at ending of period | 7,870,260 | 7,769,325
Stage 1 - Individual [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 1,279,611 | 1,199,593
Net change on exposures | (182,381) | 111,426
Transfer to Stage 1 | 162,455 | 130,936
Transfer to Stage 2 | (118,673) | (166,795)
Transfer to Stage 3 | (57) | (120)
Foreign exchange adjustments | (5,837) | 4,571
Exposure as at ending of period | 1,135,118 | 1,279,611
Stage 1 - Group [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 5,512,504 | 5,086,210
Net change on exposures | 668,090 | 621,021
Transfer to Stage 1 | 1,058,685 | 491,857
Transfer to Stage 2 | (593,536) | (561,588)
Transfer to Stage 3 | (1,970) | (1,928)
Foreign exchange adjustments | (209,625) | (123,068)
Exposure as at ending of period | 6,434,148 | 5,512,504
Stage 2 - Individual [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 178,586 | 147,053
Net change on exposures | (50,111) | (5,449)
Transfer to Stage 1 | (162,453) | (130,926)
Transfer to Stage 2 | 118,848 | 166,892
Transfer to Stage 3 | (365) | (217)
Foreign exchange adjustments | (1,047) | 1,233
Exposure as at ending of period | 83,458 | 178,586
Stage 2 - Group [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 786,663 | 794,449
Net change on exposures | (96,818) | (114,834)
Transfer to Stage 1 | (1,058,572) | (488,237)
Transfer to Stage 2 | 598,413 | 563,941
Transfer to Stage 3 | (9,938) | (13,476)
Foreign exchange adjustments | (12,102) | 44,820
Exposure as at ending of period | 207,646 | 786,663
Stage 3 - Individual [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 328 | 411
Net change on exposures | (204) | (326)
Transfer to Stage 1 | (2) | (11)
Transfer to Stage 2 | (175) | (97)
Transfer to Stage 3 | 422 | 337
Foreign exchange adjustments | (10) | 14
Exposure as at ending of period | 359 | 328
Stage 3 - Group [Member] |  |
Disclosure of other provisions [line items] |  |
Exposure as at beginning of period | 11,633 | 12,690
Net change on exposures | (8,651) | (10,615)
Transfer to Stage 1 | (113) | (3,619)
Transfer to Stage 2 | (4,877) | (2,353)
Transfer to Stage 3 | 11,908 | 15,404
Foreign exchange adjustments | (369) | 126
Exposure as at ending of period | $ 9,531 | $ 11,633

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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 increase (decrease) in exposure to credit risk on loan commitments and financial guarantee contracts resulting from transfer to stage 3. + References No definition available. + Details
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- Definition The increase (decrease) in exposure to credit risk on loan commitments and financial guarantee contracts resulting from foreign exchange. [Refer: Exposure to credit risk on loan commitments and financial guarantee contracts] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph IG20B -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_IG20B&doctype=Implementation%20Guidance -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -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 + Details
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