v3.26.1
Loans, net - Summary of Expected Credit Losses by Economic Sector for Indirect Loans (Detail) - Indirect Loans [Member] - PEN (S/)
S/ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 5,567,722 S/ 5,068,694
Expected credit loss S/ 12,355 S/ 14,248
Percentage expected credit loss 0.20% 0.30%
Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 5,012,586 S/ 4,762,187
Expected credit loss S/ 1,998 S/ 2,663
Percentage expected credit loss 0.00% 0.10%
Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 538,213 S/ 282,559
Expected credit loss S/ 2,268 S/ 2,250
Percentage expected credit loss 0.40% 0.80%
Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 16,923 S/ 23,948
Expected credit loss S/ 8,089 S/ 9,335
Percentage expected credit loss 47.80% 39.00%
Commerce [Member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 581,219 S/ 429,517
Expected credit loss S/ 674 S/ 81
Percentage expected credit loss 0.10% 0.00%
Commerce [Member] | Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 558,588 S/ 406,317
Expected credit loss S/ 557 S/ 70
Percentage expected credit loss 0.10% 0.00%
Commerce [Member] | Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 22,631 S/ 23,200
Expected credit loss S/ 117 S/ 11
Percentage expected credit loss 0.50% 0.00%
Commerce [Member] | Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Percentage expected credit loss 0.00% 0.00%
Manufacturing [Member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 843,699 S/ 832,587
Expected credit loss S/ 332 S/ 246
Percentage expected credit loss 0.00% 0.00%
Manufacturing [Member] | Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 808,284 S/ 825,853
Expected credit loss S/ 263 S/ 185
Percentage expected credit loss 0.00% 0.00%
Manufacturing [Member] | Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 35,415 S/ 6,734
Expected credit loss S/ 69 S/ 61
Percentage expected credit loss 0.20% 0.90%
Manufacturing [Member] | Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Percentage expected credit loss 0.00% 0.00%
Professional Scientific and Technical Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 29,635 S/ 43,886
Expected credit loss S/ 44 S/ 92
Percentage expected credit loss 0.10% 0.20%
Professional Scientific and Technical Activities [Member] | Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 25,746 S/ 42,476
Expected credit loss S/ 12 S/ 50
Percentage expected credit loss 0.00% 0.10%
Professional Scientific and Technical Activities [Member] | Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 3,889 S/ 1,410
Expected credit loss S/ 32 S/ 42
Percentage expected credit loss 0.80% 3.00%
Professional Scientific and Technical Activities [Member] | Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Percentage expected credit loss 0.00% 0.00%
Communications Storage And Transportation [Member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 398,541 S/ 549,591
Expected credit loss S/ 190 S/ 383
Percentage expected credit loss 0.00% 0.10%
Communications Storage And Transportation [Member] | Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 346,362 S/ 547,328
Expected credit loss S/ 136 S/ 323
Percentage expected credit loss 0.00% 0.10%
Communications Storage And Transportation [Member] | Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 52,179 S/ 2,209
Expected credit loss S/ 54 S/ 15
Percentage expected credit loss 0.10% 0.70%
Communications Storage And Transportation [Member] | Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount   S/ 54
Expected credit loss   S/ 45
Percentage expected credit loss 0.00% 83.30%
Agriculture [Member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 42,195 S/ 13,927
Expected credit loss S/ 10 S/ 17
Percentage expected credit loss 0.00% 0.10%
Agriculture [Member] | Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 42,158 S/ 13,890
Expected credit loss S/ 10 S/ 16
Percentage expected credit loss 0.00% 0.10%
Agriculture [Member] | Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 37 S/ 37
Expected credit loss   S/ 1
Percentage expected credit loss 0.00% 2.70%
Agriculture [Member] | Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Percentage expected credit loss 0.00% 0.00%
Electricity Gas Water And Oil [Member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 174,779 S/ 194,779
Expected credit loss S/ 6,487 S/ 7,436
Percentage expected credit loss 3.70% 3.80%
Electricity Gas Water And Oil [Member] | Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 118,498 S/ 169,810
Expected credit loss S/ 44 S/ 409
Percentage expected credit loss 0.00% 0.20%
Electricity Gas Water And Oil [Member] | Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 47,678 S/ 16,495
Expected credit loss S/ 259 S/ 208
Percentage expected credit loss 0.50% 1.30%
Electricity Gas Water And Oil [Member] | Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 8,603 S/ 8,474
Expected credit loss S/ 6,184 S/ 6,819
Percentage expected credit loss 71.90% 80.50%
Leaseholds and Real Estate Activities [Member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 126,560 S/ 135,660
Expected credit loss S/ 273 S/ 206
Percentage expected credit loss 0.20% 0.20%
Leaseholds and Real Estate Activities [Member] | Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 60,064 S/ 90,609
Expected credit loss S/ 28 S/ 88
Percentage expected credit loss 0.00% 0.10%
Leaseholds and Real Estate Activities [Member] | Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 66,496 S/ 45,051
Expected credit loss S/ 245 S/ 118
Percentage expected credit loss 0.40% 0.30%
Leaseholds and Real Estate Activities [Member] | Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Percentage expected credit loss 0.00% 0.00%
Construction And Infrastructure [Member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 116,610 S/ 124,651
Expected credit loss S/ 285 S/ 145
Percentage expected credit loss 0.20% 0.10%
Construction And Infrastructure [Member] | Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 102,925 S/ 114,457
Expected credit loss S/ 33 S/ 45
Percentage expected credit loss 0.00% 0.00%
Construction And Infrastructure [Member] | Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 13,685 S/ 10,194
Expected credit loss S/ 252 S/ 100
Percentage expected credit loss 1.80% 1.00%
Construction And Infrastructure [Member] | Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Percentage expected credit loss 0.00% 0.00%
Others [Member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 3,254,484 S/ 2,744,096
Expected credit loss S/ 4,060 S/ 5,642
Percentage expected credit loss 0.10% 0.20%
Others [Member] | Stage 1 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 2,949,961 S/ 2,551,447
Expected credit loss S/ 915 S/ 1,477
Percentage expected credit loss 0.00% 0.10%
Others [Member] | Stage 2 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 296,203 S/ 177,229
Expected credit loss S/ 1,240 S/ 1,694
Percentage expected credit loss 0.40% 1.00%
Others [Member] | Stage 3 [member]    
Disclosure of Expected Credit Losses by Economic Sector For Indirect Loans [Line Items]    
Carrying amount S/ 8,320 S/ 15,420
Expected credit loss S/ 1,905 S/ 2,471
Percentage expected credit loss 22.90% 16.00%