v3.26.1
Assets and Liabilities for insurance and reinsurance contracts - Summary of new insurance contracts issued (Detail) - PEN (S/)
S/ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued S/ 13,058,772 S/ 12,522,352
Life Insurance Contracts Issued One [Member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Losses on onerous contracts at initial recognition 33,955 22,259
Life Insurance Contracts Issued One [Member] | Estimate of present value of future cash outflows, excluding insurance acquisition cash flows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 978,623 871,097
Life Insurance Contracts Issued One [Member] | Estimates of insurance acquisition cash flows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 98,636 92,502
Life Insurance Contracts Issued One [Member] | Estimate of present value of future cash outflows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 1,077,259 963,599
Life Insurance Contracts Issued One [Member] | Estimates of present value of future cash inflows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued (1,402,760) (1,224,494)
Life Insurance Contracts Issued One [Member] | Risk adjustment [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 18,385 13,417
Life Insurance Contracts Issued One [Member] | Contractual service margin [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 341,071 269,737
Life Insurance Contracts Issued One [Member] | Non-onerous Insurance Contracts [Member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Losses on onerous contracts at initial recognition 0 0
Life Insurance Contracts Issued One [Member] | Non-onerous Insurance Contracts [Member] | Estimate of present value of future cash outflows, excluding insurance acquisition cash flows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 747,034 652,557
Life Insurance Contracts Issued One [Member] | Non-onerous Insurance Contracts [Member] | Estimates of insurance acquisition cash flows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 81,917 75,164
Life Insurance Contracts Issued One [Member] | Non-onerous Insurance Contracts [Member] | Estimate of present value of future cash outflows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 828,951 727,721
Life Insurance Contracts Issued One [Member] | Non-onerous Insurance Contracts [Member] | Estimates of present value of future cash inflows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued (1,185,466) (1,008,629)
Life Insurance Contracts Issued One [Member] | Non-onerous Insurance Contracts [Member] | Risk adjustment [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 15,444 11,171
Life Insurance Contracts Issued One [Member] | Non-onerous Insurance Contracts [Member] | Contractual service margin [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 341,071 269,737
Life Insurance Contracts Issued One [Member] | Onerous Insurance Contracts [Member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Losses on onerous contracts at initial recognition 33,955 22,259
Life Insurance Contracts Issued One [Member] | Onerous Insurance Contracts [Member] | Estimate of present value of future cash outflows, excluding insurance acquisition cash flows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 231,589 218,540
Life Insurance Contracts Issued One [Member] | Onerous Insurance Contracts [Member] | Estimates of insurance acquisition cash flows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 16,719 17,338
Life Insurance Contracts Issued One [Member] | Onerous Insurance Contracts [Member] | Estimate of present value of future cash outflows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 248,308 235,878
Life Insurance Contracts Issued One [Member] | Onerous Insurance Contracts [Member] | Estimates of present value of future cash inflows [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued (217,294) (215,865)
Life Insurance Contracts Issued One [Member] | Onerous Insurance Contracts [Member] | Risk adjustment [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued 2,941 2,246
Life Insurance Contracts Issued One [Member] | Onerous Insurance Contracts [Member] | Contractual service margin [member]    
Disclosure In Tabular Form Of New Insurance Contracts Issued Life Insurance [Line Items]    
Life insurance issued S/ 0 S/ 0