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v3.19.1

Related Party Transactions (Other assets and liabilities, Income and expenses with related parties) (Details) - CLP ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Assets |  |
Cash and due from banks | $ 23,086 | $ 57,563
Transactions in the course of collection | 35,469 | 13,249
Financial assets held-for-trading | 205 |
Derivative instruments | 415,683 | 323,186
Financial assets | 14,690 |
Other assets | 80,569 | 114,536
Total | 569,702 | 508,534
Liabilities |  |
Demand deposits | 169,607 | 173,715
Transactions in the course of payment | 58,987 | 16,116
Cash collateral on securities lent and repurchase agreements | 84,465 | 25,227
Savings accounts and time deposits | 124,362 | 169,322
Derivative instruments | 337,299 | 370,356
Borrowings from financial institutions | 228,269 | 251,555
Other liabilities | 115,145 | 51,814
Total | 1,118,134 | 1,058,105
Type of income or expense recognized |  |
Interest and revenue income | 21,736 | 26,485
Interest and revenue expense | 7,196 | 9,332
Fees and commission income | 70,286 | 65,995
Fees and commission expense | 74,205 | 69,843
Derivative instruments income | 85,500 | 33,540
Derivative instruments expense | 42,365 | 97,416
Other financial operations income |  | 1
Release or established of provision for credit risk expense | 28 | 252
Operating expenses | 105,734 | 100,389
Other income | 446 | 3,723
Other expense | 45 | 56
Comder Contraparte Central S.A |  |
Type of income or expense recognized |  |
Net loss | $ 71,297 | $ 96,075

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

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

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- 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
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Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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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 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

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- 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

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- 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 income loss, resulting from related party transactions. + References No definition available. + Details
Name: | bch_NetIncomeLossRelatedPartyTransactions
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- 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

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- 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

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- 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 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

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- 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

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- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=bch_ComderContraparteCentralS.aMember
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Data Type: | na
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