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Risk Management (Details) - Schedule of NRFF impact on accrual book for next 12-months $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Most Adverse Stress Scenario 12-Month Revenue Accrual Book |
Impact by Base Interest Rate shocks | $ (194,559)
Impact due to Spreads Shocks | (6,591)
Higher / (Lower) Net revenues | $ (201,150)

X
- Definition The amount of Impact by Base Interest Rate shocks. + References No definition available. + Details
Name: | bch_ImpactByBaseInterestRateShocks
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | bch_MostAdverseStressScenario12MonthRevenueAccrualBookAbstract
Namespace Prefix: | bch_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of Net revenue impact due to spreads shock for the next 12-months period. + References No definition available. + Details
Name: | bch_NetRevenuesFromFundsImpactDueToSpreadsShock
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total amount of higher/ (lower) net revenue impact for the next 12-months period. + References No definition available. + Details
Name: | bch_TotalNrffImpactOnAccrualBook
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration