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Fair Value of Financial Assets and Liabilities (Details Textual)	12 Months Ended
	Dec. 31, 2019
Fair Value of Financial Assets and Liabilities [abstract]
Instruments of level 3 have denomination Investment Grade	98.00%
Financial instruments correspond to domestic issuers	100.00%

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- Definition

Represents percentage of financial instruments correspond to domestic issuers.

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No definition available.

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Name:	bch_PercentageOfFinancialInstrumentsCorrespondToDomesticIssuers
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- Definition

Represents Percentage of instruments of level 3 have denomination investment grade.

+ References

No definition available.

+ Details

Name:	bch_PercentageOfInstrumentsOfLevel3HaveDenominationInvestmentGrade
Namespace Prefix:	bch_
Data Type:	num:percentItemType
Balance Type:	na
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