Deposits and obligations - Summary of deposits and obligations (Parenthetical) (Detail) - PEN (S/)	Dec. 31, 2025	Dec. 31, 2024
Deposits and Obligations [Line Items]
Deposits and obligations covered by Peruvian Deposit Insurance Fund	S/ 22,138,836,000	S/ 19,978,058,000
Deposit insurance fund for each client coverage	S/ 116,700	S/ 121,600

The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Classes of contingent liabilities [domain]; Financial assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
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-IssueDate 2025-01-01
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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant