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Borrowings from Financial Institutions (Details) $ in Thousands, $ in Millions | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CLP ($) | Dec. 31, 2017 CLP ($)
--- | --- | --- | ---
Borrowings from Financial Institutions |  |  |
Domestic banks - inter-bank loans |  | $ 7,001 | $ 1,100
Domestic banks - current account overdrafts |  | 374 |
Total borrowings from domestic banks |  | 7,375 | 1,100
Foreign banks - trade financing - Chilean export financing |  | 1,354,943 | 1,064,435
Foreign banks - trade financing - Chilean import financing |  | 31,523 | 23,064
Foreign banks - borrowings and other obligations - current account overdrafts |  | 18,283 | 13,745
Foreign banks - borrowings and other obligations - long term borrowings |  | 104,635 | 92,683
Total borrowings from foreign banks |  | 1,509,384 | 1,193,927
Chilean Central Bank - borrowings and other obligations - debt reprogramming credit lines |  |  | 1
Total borrowings from Chilean Central Bank |  |  | 1
Total Borrowings from Financial Institutions | $ 2,186,792 | $ 1,516,759 | $ 1,195,028

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- Definition Represents the amount of debt reprogramming credit lines from the Central Bank. + References No definition available. + Details
Name: | bch_DebtReprogrammingCreditLinesFromCentralBank
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of borrowings from domestic banks. + References No definition available. + Details
Name: | bch_DomesticBankBorrowings
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of current account overdrafts from domestic banks. + References No definition available. + Details
Name: | bch_DomesticBankCurrentAccountOverdrafts
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of domestic inter-bank loans. + References No definition available. + Details
Name: | bch_DomesticInterBankLoans
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of borrowings from foreign banks. + References No definition available. + Details
Name: | bch_ForeignBankBorrowings
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of current account overdrafts from foreign banks. + References No definition available. + Details
Name: | bch_ForeignBankCurrentAccountOverdrafts
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of long term borrowings from banks. + References No definition available. + Details
Name: | bch_ForeignBankLongTermBorrowings
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the amount of borrowings from foreign banks for financing exports. + References No definition available. + Details
Name: | bch_ForeignBanksExportFinancing
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the amount of borrowings from foreign banks for financing imports. + References No definition available. + Details
Name: | bch_ForeignBanksImportFinancing
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Definition The amount of liabilities due to central banks. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_LiabilitiesDueToCentralBanks
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of loans received. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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