Saving Accounts and Time Deposits (Details) - Schedule of saving accounts and time deposits $ in Thousands, $ in Millions	Dec. 31, 2020 CLP ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 CLP ($)
Schedule of saving accounts and time deposits [Abstract]
Time deposits	$ 8,442,536		$ 10,537,614
Term savings accounts	342,550		239,850
Other term balances payable	114,455		79,154
Total	$ 8,899,541	$ 12,501,111	$ 10,856,618

The amount of balances in customers' other term deposits held by the entity.

No definition available.

Name:	bch_BalancesOnOtherTermDepositsFromCustomers
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of balances in customers' time deposits held by the entity.

+ References

No definition available.

+ Details

Name:	bch_BalancesOnTimeDepositsFromCustomers
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Deposits from customer that are saving accounts and time deposits.

+ References

No definition available.

+ Details

Name:	bch_SavingAccountsAndTimeDeposits
Namespace Prefix:	bch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	bch_ScheduleOfSavingAccountsAndTimeDepositsAbstract
Namespace Prefix:	bch_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of balances in customers' term deposits held by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_BalancesOnTermDepositsFromCustomers
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant