Result from insurance activities - Summary of result from insurance activities (Parenthetical) (Detail) - PEN (S/) S/ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disclosure of Effect of Insurance Contracts Recognised [Line Items]
Other expenses, by nature	S/ 409,252,000	S/ 368,885,000	S/ 334,602,000

Disclosure of effect of insurance contracts recognised.

No definition available.

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Period Type:	duration