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v3.21.1

Risk Management (Details) - Schedule of use of cross currency funding $ in Millions | Dec. 31, 2020 USD ($)
--- | ---
Maximum [member] |
MMUS$ |
Cross Currency Funding | $ 3,122
Minimum [member] |
MMUS$ |
Cross Currency Funding | 1,724
Average [member] |
MMUS$ |
Cross Currency Funding | $ 2,417

X
- Definition Cross currency funding. + References No definition available. + Details
Name: | bch_CrossCurrencyFunding
Namespace Prefix: | bch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |