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v3.21.1

Risk Management (Details) - Schedule of use of EaR $ in Millions | 12 Months Ended
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Dec. 31, 2020 CLP ($)
MCh$ |
Maximum Earnings-at-Risk | $ 100,191
Minimum Earnings-at-Risk | 57,038
Average Earnings-at-Risk | $ 80,271

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- References No definition available. + Details
Name: | bch_AverageEarningsatRiskinShares
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | bch_MaximumEarningsatRisk
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | bch_MchAbstract00
Namespace Prefix: | bch_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | bch_MinimumEarningsatRisk
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration