v3.26.1
Loans, net - Summary of Expected Credit Losses by Economic Sector for Direct Loans (Detail) - Direct Loans [Member] - PEN (S/)
S/ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 51,829,932 S/ 50,415,364
Expected credit loss S/ 1,591,042 S/ 1,730,167
Percentage expected credit loss 3.10% 3.40%
Consumer Loans [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 15,248,665 S/ 15,036,411
Expected credit loss S/ 1,269,584 S/ 1,372,856
Percentage expected credit loss 8.30% 9.10%
Mortgage Loans [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 11,400,784 S/ 10,571,300
Expected credit loss S/ 75,836 S/ 93,800
Percentage expected credit loss 0.70% 0.90%
Commerce [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 405,605 S/ 410,367
Expected credit loss S/ 2,226 S/ 2,438
Percentage expected credit loss 0.50% 0.60%
Manufacturing [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 3,577,083 S/ 4,139,016
Expected credit loss S/ 13,615 S/ 14,836
Percentage expected credit loss 0.40% 0.40%
Professional Scientific and Technical Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 938,565 S/ 714,870
Expected credit loss S/ 5,109 S/ 4,598
Percentage expected credit loss 0.50% 0.60%
Communications Storage And Transportation [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 2,258,425 S/ 1,946,274
Expected credit loss S/ 11,395 S/ 9,859
Percentage expected credit loss 0.50% 0.50%
Agriculture [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 2,472,695 S/ 2,393,311
Expected credit loss S/ 3,802 S/ 6,264
Percentage expected credit loss 0.20% 0.30%
Electricity Gas Water And Oil [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 196,292 S/ 157,841
Expected credit loss S/ 30,223 S/ 29,041
Percentage expected credit loss 15.40% 18.40%
Leaseholds and Real Estate Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 541,735 S/ 448,839
Expected credit loss S/ 3,814 S/ 5,617
Percentage expected credit loss 0.70% 1.30%
Construction And Infrastructure [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 654,119 S/ 772,165
Expected credit loss S/ 12,189 S/ 13,884
Percentage expected credit loss 1.90% 1.80%
Others [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 14,135,964 S/ 13,824,970
Expected credit loss S/ 163,249 S/ 176,974
Percentage expected credit loss 1.20% 1.30%
Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 46,596,199 S/ 44,558,064
Expected credit loss S/ 444,934 S/ 439,324
Percentage expected credit loss 1.00% 1.00%
Stage 1 [member] | Consumer Loans [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 13,390,939 S/ 12,899,027
Expected credit loss S/ 401,302 S/ 403,740
Percentage expected credit loss 3.00% 3.10%
Stage 1 [member] | Mortgage Loans [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 10,411,232 S/ 9,577,118
Expected credit loss S/ 7,447 S/ 5,523
Percentage expected credit loss 0.10% 0.10%
Stage 1 [member] | Commerce [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 388,192 S/ 392,929
Expected credit loss S/ 299 S/ 242
Percentage expected credit loss 0.10% 0.10%
Stage 1 [member] | Manufacturing [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 3,293,617 S/ 3,888,532
Expected credit loss S/ 3,584 S/ 3,383
Percentage expected credit loss 0.10% 0.10%
Stage 1 [member] | Professional Scientific and Technical Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 817,365 S/ 583,931
Expected credit loss S/ 1,139 S/ 636
Percentage expected credit loss 0.10% 0.10%
Stage 1 [member] | Communications Storage And Transportation [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 2,201,491 S/ 1,819,460
Expected credit loss S/ 1,937 S/ 1,253
Percentage expected credit loss 0.10% 0.10%
Stage 1 [member] | Agriculture [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 2,267,553 S/ 2,239,264
Expected credit loss S/ 785 S/ 1,260
Percentage expected credit loss 0.00% 0.10%
Stage 1 [member] | Electricity Gas Water And Oil [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 139,275 S/ 101,903
Expected credit loss S/ 315 S/ 364
Percentage expected credit loss 0.20% 0.40%
Stage 1 [member] | Leaseholds and Real Estate Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 500,125 S/ 398,882
Expected credit loss S/ 1,430 S/ 1,137
Percentage expected credit loss 0.30% 0.30%
Stage 1 [member] | Construction And Infrastructure [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 513,303 S/ 632,424
Expected credit loss S/ 2,153 S/ 1,763
Percentage expected credit loss 0.40% 0.30%
Stage 1 [member] | Others [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 12,673,107 S/ 12,024,594
Expected credit loss S/ 24,543 S/ 20,023
Percentage expected credit loss 0.20% 0.20%
Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 4,078,376 S/ 4,609,607
Expected credit loss S/ 468,668 S/ 566,636
Percentage expected credit loss 11.50% 12.30%
Stage 2 [member] | Consumer Loans [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 1,385,665 S/ 1,622,693
Expected credit loss S/ 415,350 S/ 474,416
Percentage expected credit loss 30.00% 29.20%
Stage 2 [member] | Mortgage Loans [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 642,517 S/ 669,087
Expected credit loss S/ 22,383 S/ 43,956
Percentage expected credit loss 3.50% 6.60%
Stage 2 [member] | Commerce [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 13,889 S/ 12,365
Expected credit loss S/ 209 S/ 389
Percentage expected credit loss 1.50% 3.10%
Stage 2 [member] | Manufacturing [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 266,258 S/ 228,696
Expected credit loss S/ 1,846 S/ 2,963
Percentage expected credit loss 0.70% 1.30%
Stage 2 [member] | Professional Scientific and Technical Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 113,332 S/ 122,359
Expected credit loss S/ 500 S/ 715
Percentage expected credit loss 0.40% 0.60%
Stage 2 [member] | Communications Storage And Transportation [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 40,763 S/ 105,875
Expected credit loss S/ 756 S/ 2,278
Percentage expected credit loss 1.90% 2.20%
Stage 2 [member] | Agriculture [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 194,684 S/ 141,792
Expected credit loss S/ 1,200 S/ 2,480
Percentage expected credit loss 0.60% 1.70%
Stage 2 [member] | Electricity Gas Water And Oil [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 24,452 S/ 20,289
Expected credit loss S/ 193 S/ 396
Percentage expected credit loss 0.80% 2.00%
Stage 2 [member] | Leaseholds and Real Estate Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 40,003 S/ 46,199
Expected credit loss S/ 911 S/ 1,523
Percentage expected credit loss 2.30% 3.30%
Stage 2 [member] | Construction And Infrastructure [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 124,820 S/ 118,719
Expected credit loss S/ 1,160 S/ 1,675
Percentage expected credit loss 0.90% 1.40%
Stage 2 [member] | Others [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 1,231,993 S/ 1,521,533
Expected credit loss S/ 24,160 S/ 35,845
Percentage expected credit loss 2.00% 2.40%
Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 1,155,357 S/ 1,247,693
Expected credit loss S/ 677,440 S/ 724,207
Percentage expected credit loss 58.60% 58.00%
Stage 3 [member] | Consumer Loans [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 472,061 S/ 514,691
Expected credit loss S/ 452,932 S/ 494,700
Percentage expected credit loss 95.90% 96.10%
Stage 3 [member] | Mortgage Loans [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 347,035 S/ 325,095
Expected credit loss S/ 46,006 S/ 44,321
Percentage expected credit loss 13.30% 13.60%
Stage 3 [member] | Commerce [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 3,524 S/ 5,073
Expected credit loss S/ 1,718 S/ 1,807
Percentage expected credit loss 48.80% 35.60%
Stage 3 [member] | Manufacturing [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 17,208 S/ 21,788
Expected credit loss S/ 8,185 S/ 8,490
Percentage expected credit loss 47.60% 39.00%
Stage 3 [member] | Professional Scientific and Technical Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 7,868 S/ 8,580
Expected credit loss S/ 3,470 S/ 3,247
Percentage expected credit loss 44.10% 37.80%
Stage 3 [member] | Communications Storage And Transportation [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 16,171 S/ 20,939
Expected credit loss S/ 8,702 S/ 6,328
Percentage expected credit loss 53.80% 30.20%
Stage 3 [member] | Agriculture [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 10,458 S/ 12,255
Expected credit loss S/ 1,817 S/ 2,524
Percentage expected credit loss 17.40% 20.60%
Stage 3 [member] | Electricity Gas Water And Oil [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 32,565 S/ 35,649
Expected credit loss S/ 29,715 S/ 28,281
Percentage expected credit loss 91.20% 79.30%
Stage 3 [member] | Leaseholds and Real Estate Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 1,607 S/ 3,758
Expected credit loss S/ 1,473 S/ 2,957
Percentage expected credit loss 91.70% 78.70%
Stage 3 [member] | Construction And Infrastructure [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 15,996 S/ 21,022
Expected credit loss S/ 8,876 S/ 10,446
Percentage expected credit loss 55.50% 49.70%
Stage 3 [member] | Others [Member]    
Disclosure of Expected Credit Losses by Economic Sector for Direct Loans [Line Items]    
Carrying amount S/ 230,864 S/ 278,843
Expected credit loss S/ 114,546 S/ 121,106
Percentage expected credit loss 49.60% 43.40%