v3.26.1
Assets and Liabilities for insurance and reinsurance contracts - Summary of CSM is expected to be in profit or loss (Detail) - PEN (S/)
S/ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin S/ 1,079,940 S/ 870,851
Pensions [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 350,002 302,447
Life [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 566,181 439,152
General Insurance [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 163,757 129,252
Less than 1 year [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 74,883 15,168
Less than 1 year [member] | Pensions [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin (2,750) (11,923)
Less than 1 year [member] | Life [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 32,149 (3,773)
Less than 1 year [member] | General Insurance [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 45,484 30,864
From 1 to 2 years [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 64,395 9,265
From 1 to 2 years [member] | Pensions [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 713 (10,803)
From 1 to 2 years [member] | Life [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 29,727 (3,615)
From 1 to 2 years [member] | General Insurance [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 33,955 23,683
From 2 to 3 years [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 56,700 4,281
From 2 to 3 years [member] | Pensions [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 3,822 (9,509)
From 2 to 3 years [member] | Life [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 28,627 (2,780)
From 2 to 3 years [member] | General Insurance [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 24,251 16,570
From 3 to 4 years [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 50,191 1,677
From 3 to 4 years [member] | Pensions [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 5,936 (8,481)
From 3 to 4 years [member] | Life [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 28,227 (877)
From 3 to 4 years [member] | General Insurance [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 16,028 11,035
From 4 to 5 years [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 45,314 972
From 4 to 5 years [member] | Pensions [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 7,322 (7,654)
From 4 to 5 years [member] | Life [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 28,437 1,665
From 4 to 5 years [member] | General Insurance [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 9,555 6,961
More than 5 years [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 788,457 839,488
More than 5 years [member] | Pensions [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 334,959 350,817
More than 5 years [member] | Life [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin 419,014 448,532
More than 5 years [member] | General Insurance [member]    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Contractual service margin S/ 34,484 S/ 40,139