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LOANS, NET (Details Textual) - PEN (S/) S/ in Millions | Dec. 31, 2018 | Jan. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Disclosure of Loans, Net [Line Items] |  |  |  |
Allowance For Direct Loans | S/ 4,952.4 |  | S/ 4,500.5 | S/ 4,207.1
Allowance For Indirect Loans | 362.1 |  | S/ 442.5 | S/ 209.6
Movement in Direct Loans | 109,960.6 | S/ 99,764.9 |  |
Movement in InDirect Loans | 20,774.3 | 19,369.6 |  |
Movement in Gross Loans Bankers Acceptance | S/ 968.0 | S/ 532.0 |  |

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- Definition The amount of allowance for direct loans. + References No definition available. + Details
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Namespace Prefix: | bap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of allowance for indirect loans. + References No definition available. + Details
Name: | bap_AllowanceForIndirectLoans
Namespace Prefix: | bap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Definition Movement in Direct Loans + References No definition available. + Details
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Namespace Prefix: | bap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Movement in Gross Loans Bankers Acceptance + References No definition available. + Details
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Namespace Prefix: | bap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Movement in InDirect Loans + References No definition available. + Details
Name: | bap_MovementInInDirectLoans
Namespace Prefix: | bap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant