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Loans to Customers at Amortized Cost - Allowance for loan losses (Details) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Allowances for loan losses |  |
Balance as of beginning of period | $ 585,378 | $ 569,638
Charge-offs | (313,200) | (292,923)
Sales or transfer of credits |  | (958)
Allowances (released) established, net | 377,055 | 309,621
Balance as of end of period | 649,233 | 585,378
Commercial |  |
Allowances for loan losses |  |
Balance as of beginning of period | 228,864 | 221,410
Charge-offs | (55,698) | (52,419)
Sales or transfer of credits |  | (958)
Allowances (released) established, net | 81,635 | 60,831
Balance as of end of period | 254,801 | 228,864
Mortgage loans |  |
Allowances for loan losses |  |
Balance as of beginning of period | 34,330 | 33,777
Charge-offs | (7,790) | (6,993)
Sales or transfer of credits |  |
Allowances (released) established, net | 17,168 | 7,546
Balance as of end of period | 43,708 | 34,330
Consumer |  |
Allowances for loan losses |  |
Balance as of beginning of period | 322,184 | 314,451
Charge-offs | (249,712) | (233,511)
Sales or transfer of credits |  |
Allowances (released) established, net | 278,252 | 241,244
Balance as of end of period | $ 350,724 | $ 322,184

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- References No definition available. + Details
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- Definition The decrease in an allowance account for credit losses of financial assets resulting from the sale of loans portfolios. + References No definition available. + Details
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- Definition The amount of additional allowance for credit losses of financial assets recognised in profit or loss. [Refer: Allowance account for credit losses of financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The decrease in an allowance account for credit losses of financial assets resulting from the utilisation of the allowance. [Refer: Allowance account for credit losses of financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 16 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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