v3.26.1
Deferred income tax asset and liability - Disclosure of temporary difference unused tax losses and unused tax credits explanatory (Detail) - PEN (S/)
S/ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Deferred tax assets and liabilities [abstract]    
Deferred Tax Liability S/ (136,126) S/ (140,653)
Tax loss [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Asset 32,403 22,400
Provision for loan portfolio and other provisions [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Asset 4,479 3,859
Net deferred tax assets and liabilities [abstract]    
Net deferred tax assets 212,594 200,241
Deferred service income [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Asset 2,621 5,386
Right-of-use assets [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Asset 227 436
Net deferred tax assets and liabilities [abstract]    
Net deferred tax assets 2,780 2,299
Others [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Asset 20,221 15,402
Net deferred tax assets and liabilities [abstract]    
Net deferred tax assets 24,752 16,793
Net unrealized gain from fluctuation in investments through other comprehensive income [Member]    
Net deferred tax assets and liabilities [abstract]    
Net deferred tax assets 360 4,542
Leveling of assets and liabilities [Member]    
Net deferred tax assets and liabilities [abstract]    
Net deferred tax Liability (20,331) (21,741)
Unrealized gain from derivatives [Member]    
Net deferred tax assets and liabilities [abstract]    
Net deferred tax assets 1,082 7,743
Deferred income from indirect credits (stand-by letters) [Member]    
Net deferred tax assets and liabilities [abstract]    
Net deferred tax assets 2,946 3,629
Modification of rescheduled loan cash flows [Member]    
Net deferred tax assets and liabilities [abstract]    
Net deferred tax assets 714 580
Deferred cost of POS affiliation and registration [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Liability (14,383) (22,708)
Deemed cost of fixed assets [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Liability (1,118) (2,950)
Net deferred tax assets and liabilities [abstract]    
Net deferred tax Liability (58,056) (56,481)
Interest of past-due and refinanced loans [Member]    
Net deferred tax assets and liabilities [abstract]    
Net deferred tax Liability (170,965) (149,111)
Amortization of intangible assets, net [Member]    
Net deferred tax assets and liabilities [abstract]    
Net deferred tax Liability (63,783) (76,149)
Higher value of intangibles generated by business combination    
Net deferred tax assets and liabilities [abstract]    
Net deferred tax Liability (62,527) (68,636)
Higher value of property, furniture and equipment and right-of-use generated by business combination    
Net deferred tax assets and liabilities [abstract]    
Net deferred tax Liability (810) (889)
Others [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Liability (2,578) (2,619)
Net deferred tax assets and liabilities [abstract]    
Net deferred tax Liability (4,882) (3,473)
Total Deferred Income Tax Asset Net [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Liability Asset 41,872 19,206
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred Tax Liability Asset 41,872 19,206
Total Deferred Income Tax Liability Net [Member]    
Deferred tax assets and liabilities [abstract]    
Deferred Tax Liability Asset (136,126) (140,653)
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred Tax Liability Asset S/ (136,126) S/ (140,653)