LOANS, NET - Direct and indirect loans (Details) - PEN (S/) S/ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Loans, Net [Line Items]
Balances at the beginning of the period	S/ 5,314,531	S/ 4,943,008	S/ 4,416,692
Provision for loan losses	114,200		2,057,478
Loan portfolio written-off			(1,426,201)
Exchange difference and others			(104,961)
Balances at the end of the period	S/ 5,507,759	5,314,531	4,943,008
Commercial loans [Member]
Disclosure of Loans, Net [Line Items]
Balances at the beginning of the period		1,680,126	1,235,970
Provision for loan losses			737,929
Loan portfolio written-off			(217,160)
Exchange difference and others			(76,613)
Balances at the end of the period			1,680,126
Residential mortgage loans [Member]
Disclosure of Loans, Net [Line Items]
Balances at the beginning of the period		228,287	193,385
Provision for loan losses			50,663
Loan portfolio written-off			(10,662)
Exchange difference and others			(5,099)
Balances at the end of the period			228,287
Micro-business loans [Member]
Disclosure of Loans, Net [Line Items]
Balances at the beginning of the period		1,476,578	1,353,168
Provision for loan losses			576,931
Loan portfolio written-off			(437,594)
Exchange difference and others			(15,927)
Balances at the end of the period			1,476,578
Consumer loans [Member]
Disclosure of Loans, Net [Line Items]
Balances at the beginning of the period		S/ 1,558,017	1,634,169
Provision for loan losses			691,955
Loan portfolio written-off			(760,785)
Exchange difference and others			(7,322)
Balances at the end of the period			S/ 1,558,017

No definition available.

Name:	bap_DisclosureOfLoansNetLineItems
Namespace Prefix:	bap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of additional allowance for credit losses of financial assets recognised in profit or loss. [Refer: Allowance account for credit losses of financial assets]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b
-URIDate 2019-03-27

+ Details

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

- Definition

The increase (decrease) in an allowance account for credit losses of financial assets resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Allowance account for credit losses of financial assets]

+ References

+ Details

Name:	ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The decrease in an allowance account for credit losses of financial assets resulting from the reversal of impairment. [Refer: Allowance account for credit losses of financial assets]

+ References

+ Details

Name:	ifrs-full_ReversalAllowanceAccountForCreditLossesOfFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_CorporateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=bap_MortgageLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=bap_MicroBusinessLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_ConsumerLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: