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Expenses from salaries and employee benefits - Schedule of Expense for Employee Benefit Obligation (Details) - CLP ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Schedule of Expense for Employee Benefit Obligation [Abstract] |  |  |
Expenses for short-term employee benefit | $ 528,466 | $ 534,177 | $ 491,696
Expenses for employee benefits due to termination of employment contract | 42,125 | 35,391 | 27,381
Training expenses | 3,440 | 3,751 | 2,596
Expenses for nursery and kindergarten | 1,618 | 1,513 | 1,403
Other personnel expenses | 6,898 | 7,852 | 5,150
Total | $ 582,547 | $ 582,684 | $ 528,226

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- Definition Expenses for employee benefits due to termination of employment contract. + References No definition available. + Details
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Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Expenses for nursery and kindergarten. + References No definition available. + Details
Name: | bch_ExpensesForNurseryAndKindergarten
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Expenses for short-term employee benefit. + References No definition available. + Details
Name: | bch_ExpensesForShorttermEmployeeBenefit
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of expenses that the entity does not separately disclose in the same statement or note when the entity uses the 'nature of expense' form for its analysis of expenses. [Refer: Expenses, by nature] + References No definition available. + Details
Name: | bch_OtherPersonnelExpenses
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | bch_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Training expenses. + References No definition available. + Details
Name: | bch_TrainingExpenses
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 102 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 99 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_99&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 104 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_104&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration