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v3.20.1

Related Party Transactions (Other assets and liabilities, Income and expenses with related parties) (Details) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Assets |  |  |  |
Cash and due from banks |  | $ 99,802 | $ 23,086 |
Transactions in the course of collection |  | 63,969 | 35,469 |
Financial assets held-for-trading |  | 880 | 205 |
Derivative instruments |  | 495,378 | 415,683 |
Investment instruments |  | 12,141 | 14,690 |
Other assets |  | 76,548 | 80,569 |
Total |  | 748,718 | 569,702 |
Liabilities |  |  |  |
Demand deposits |  | 227,377 | 169,607 |
Transactions in the course of payment |  | 16,202 | 58,987 |
Obligations under repurchase agreements |  | 54,030 | 84,465 |
Savings accounts and time deposits |  | 396,028 | 219,322 |
Derivative instruments |  | 432,669 | 337,299 |
Borrowings from financial institutions |  | 292,172 | 228,269 |
Lease liabilities |  | 5,138 |  |
Other liabilities |  | 151,335 | 115,145 |
Total |  | 1,574,951 | 1,213,094 |
Type of income or expense recognized |  |  |  |
Interest and revenue income |  | 19,039 | 21,736 | $ 26,485
Interest and revenue expense |  | 2,619 | 7,196 | 9,332
Fees and commission income |  | 72,931 | 70,286 | 65,995
Fees and commission expense |  | 65,383 | 74,205 | 69,843
Derivative instruments income | [1] | 124,967 | 85,500 | 33,540
Derivative instruments expense | [1] | 73,252 | 42,365 | 97,416
Other financial operations income |  | 87 |  | 1
Other financial operations expenses |  | 119 |  |
Release or established of provision for credit risk expense |  | 106 | 34 | 252
Operating expenses |  | 120,559 | 105,734 | 100,389
Other income |  | 542 | 446 | 3,723
Other expense |  | $ 26 | $ 45 | $ 56
[1] | The outcome of derivative operations is presented net at each related counterparty level. Additionally, this line includes operations with local counterpart banks (unrelated) which have been novated by Comder Contraparte Central S.A. (Related entity) for centralized clearing purposes, which generated a net gain of Ch$123,461 million as of December 31, 2019 (net gain of Ch$71,297 million as of December 31, 2018 and net loss of Ch$96,075 as of December 31, 2017).

X
- Definition The amount of total assets, resulting from related party transactions. + References No definition available. + Details
Name: | bch_AssetsRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of borrowings from financial institutions, resulting from related party transactions. + References No definition available. + Details
Name: | bch_BorrowingsFromFinancialInstitutionsRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of cash and due from banks, resulting from related party transactions. + References No definition available. + Details
Name: | bch_CashAndDueFromBanksRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of cash collateral on securities lent and repurchase agreements, resulting from related party transactions. + References No definition available. + Details
Name: | bch_CashCollateralOnSecuritiesLentAndRepurchaseAgreementsRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of demand deposits, resulting from related party transactions. + References No definition available. + Details
Name: | bch_DemandDepositsRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of derivative instruments assets, resulting from related party transactions. + References No definition available. + Details
Name: | bch_DerivativeInstrumentsAssetsRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of derivative instruments expense, resulting from related party transactions. + References No definition available. + Details
Name: | bch_DerivativeInstrumentsExpenseRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of derivative instruments income, resulting from related party transactions. + References No definition available. + Details
Name: | bch_DerivativeInstrumentsIncomeRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of derivative instruments liability, resulting from related party transactions. + References No definition available. + Details
Name: | bch_DerivativeInstrumentsLiabilityRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of fees and commission expense, resulting from related party transactions. + References No definition available. + Details
Name: | bch_FeesAndCommissionExpenseRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of fees and commission income, resulting from related party transactions. + References No definition available. + Details
Name: | bch_FeesAndCommissionIncomeRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of financial assets held-for-trading, resulting from related party transactions. + References No definition available. + Details
Name: | bch_FinancialAssetsHeldForTradingRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Definition The amount of Interest and revenue expense, resulting from related party transactions. + References No definition available. + Details
Name: | bch_InterestAndRevenueExpenseRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of Interest and revenue income, resulting from related party transactions. + References No definition available. + Details
Name: | bch_InterestAndRevenueIncomeRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of investment instruments. + References No definition available. + Details
Name: | bch_InvestmentInsrumentsRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount represents lease liabilities. + References No definition available. + Details
Name: | bch_LeaseLiabilitiesRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of total liabilities, resulting from related party transactions. + References No definition available. + Details
Name: | bch_LiabilitiesRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of operating expenses, resulting from related party transactions. + References No definition available. + Details
Name: | bch_OperatingExpensesRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of other assets, resulting from related party transactions. + References No definition available. + Details
Name: | bch_OtherAssetsRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of other expenses, resulting from related party transactions. + References No definition available. + Details
Name: | bch_OtherExpensesRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Other financial operations expenses. + References No definition available. + Details
Name: | bch_OtherFinancialOperationsExpensesRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of other financial operations income, resulting from related party transactions. + References No definition available. + Details
Name: | bch_OtherFinancialOperationsIncomeRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of other income, resulting from related party transactions. + References No definition available. + Details
Name: | bch_OtherIncomeRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of other liabilities, resulting from related party transactions. + References No definition available. + Details
Name: | bch_OtherLiabilitiesRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of release or established provision for credit risk expense, resulting from related party transactions. + References No definition available. + Details
Name: | bch_ReleaseOrEstablishedOfProvisionForCreditRiskExpense
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of savings accounts and time deposits, resulting from related party transactions. + References No definition available. + Details
Name: | bch_SavingsAccountsAndTimeDepositsRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of transactions in the course of collection, resulting from related party transactions. + References No definition available. + Details
Name: | bch_TransactionsInCourseOfCollectionRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of transactions in the course of payment, resulting from related party transactions. + References No definition available. + Details
Name: | bch_TransactionsInCourseOfPaymentRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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