v3.26.1
Business segments - Disclosure of operating segments explanatory (Detail) - PEN (S/)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of operating segments [line items]      
Third party S/ 11,326,379,000 S/ 10,615,191,000 S/ 10,430,128,000
Total income 11,326,379,000 10,615,191,000 10,430,128,000
Consolidated statement of income      
Interest and similar income 6,888,377,000 7,029,391,000 7,120,411,000
Interest and similar expenses (2,258,971,000) (2,480,270,000) (2,592,366,000)
Net interest and similar income 4,629,406,000 4,549,121,000 4,528,045,000
(Loss) recovery due to impairment on loans, net of recoveries (1,136,707,000) (1,720,179,000) (1,981,818,000)
(Loss) recovery due to impairment of financial investments (263,761,000) (47,521,000) (7,500,000)
Net interest and similar income after impairment loss 3,228,938,000 2,781,421,000 2,538,727,000
Fee income from financial services, net 1,219,631,000 1,142,943,000 1,178,462,000
Net gain (loss) on sale of financial investments 102,055,000 26,544,000 6,431,000
Other income (expenses) 1,095,821,000 765,067,000 551,384,000
Result from insurance activities (47,797,000) (169,789,000) (178,392,000)
Depreciation and amortization (450,267,000) (413,057,000) (379,038,000)
Other expenses (2,712,938,000) (2,487,159,000) (2,371,129,000)
Income before exchange difference and Income Tax 2,435,443,000 1,645,970,000 1,346,445,000
Exchange difference 38,004,000 (24,144,000) 8,427,000
Income Tax (530,252,000) (314,365,000) (275,596,000)
Profit (loss) from continuing operations 1,943,195,000 1,307,461,000 1,079,276,000
Profit (loss), attributable to [abstract]      
IFS's shareholders 1,932,470,000 1,300,078,000 1,072,728,000
Non-controlling interest 10,725,000 7,383,000 6,548,000
Profit (loss) from continuing operations 1,943,195,000 1,307,461,000 1,079,276,000
Banking [Member]      
Disclosure of operating segments [line items]      
Third party 7,778,285,000 7,732,766,000 7,812,858,000
Inter-segment (173,018,000) (154,329,000) (126,620,000)
Total income 7,605,267,000 7,578,437,000 7,686,238,000
Consolidated statement of income      
Interest and similar income 5,815,687,000 5,969,629,000 6,076,020,000
Interest and similar expenses (1,980,679,000) (2,217,197,000) (2,363,800,000)
Net interest and similar income 3,835,008,000 3,752,432,000 3,712,220,000
(Loss) recovery due to impairment on loans, net of recoveries (1,136,728,000) (1,719,913,000) (1,981,988,000)
(Loss) recovery due to impairment of financial investments (30,000) (982,000) 15,000
Net interest and similar income after impairment loss 2,698,250,000 2,031,537,000 1,730,247,000
Fee income from financial services, net 884,628,000 791,815,000 813,279,000
Net gain (loss) on sale of financial investments 67,504,000 12,995,000 (660,000)
Other income (expenses) 552,739,000 500,512,000 495,500,000
Depreciation and amortization (307,101,000) (294,514,000) (271,526,000)
Other expenses (1,942,038,000) (1,762,494,000) (1,678,356,000)
Income before exchange difference and Income Tax 1,953,982,000 1,279,851,000 1,088,484,000
Exchange difference 2,438,000 (7,402,000) (15,969,000)
Income Tax (481,423,000) (265,096,000) (216,366,000)
Profit (loss) from continuing operations 1,474,997,000 1,007,353,000 856,149,000
Profit (loss), attributable to [abstract]      
IFS's shareholders 1,474,997,000 1,007,353,000 856,149,000
Profit (loss) from continuing operations 1,474,997,000 1,007,353,000 856,149,000
Insurance [Member]      
Disclosure of operating segments [line items]      
Third party 2,318,167,000 1,760,985,000 1,695,222,000
Inter-segment (5,614,000) (4,517,000) (4,975,000)
Total income 2,312,553,000 1,756,468,000 1,690,247,000
Consolidated statement of income      
Interest and similar income 921,779,000 870,993,000 851,648,000
Interest and similar expenses (184,452,000) (153,464,000) (126,704,000)
Net interest and similar income 737,327,000 717,529,000 724,944,000
(Loss) recovery due to impairment of financial investments (264,123,000) (45,910,000) (7,858,000)
Net interest and similar income after impairment loss 473,204,000 671,619,000 717,086,000
Fee income from financial services, net (12,622,000) (10,628,000) (13,431,000)
Net gain (loss) on sale of financial investments 34,942,000 17,664,000 9,948,000
Other income (expenses) 237,079,000 103,571,000 112,990,000
Result from insurance activities (47,777,000) (169,750,000) (178,379,000)
Depreciation and amortization (20,427,000) (22,091,000) (21,658,000)
Other expenses (425,609,000) (379,087,000) (352,933,000)
Income before exchange difference and Income Tax 238,790,000 211,298,000 273,623,000
Exchange difference 35,747,000 (9,390,000) 18,430,000
Profit (loss) from continuing operations 274,537,000 201,908,000 292,053,000
Profit (loss), attributable to [abstract]      
IFS's shareholders 274,537,000 201,908,000 292,053,000
Profit (loss) from continuing operations 274,537,000 201,908,000 292,053,000
Wealth Management [Member]      
Disclosure of operating segments [line items]      
Third party 521,218,000 435,882,000 291,408,000
Inter-segment (4,450,000) (2,355,000) (1,386,000)
Total income 516,768,000 433,527,000 290,022,000
Consolidated statement of income      
Interest and similar income 160,076,000 178,160,000 183,926,000
Interest and similar expenses (98,572,000) (108,466,000) (98,370,000)
Net interest and similar income 61,504,000 69,694,000 85,556,000
(Loss) recovery due to impairment on loans, net of recoveries 20,000 (266,000) 170,000
(Loss) recovery due to impairment of financial investments 376,000 (585,000) 347,000
Net interest and similar income after impairment loss 61,900,000 68,843,000 86,073,000
Fee income from financial services, net 195,956,000 170,955,000 146,223,000
Net gain (loss) on sale of financial investments (391,000) (4,115,000) (2,857,000)
Other income (expenses) 162,869,000 89,331,000 (37,332,000)
Depreciation and amortization (8,285,000) (8,734,000) (15,018,000)
Other expenses (166,997,000) (166,789,000) (138,589,000)
Income before exchange difference and Income Tax 245,052,000 149,491,000 38,500,000
Exchange difference (1,137,000) (2,066,000) 761,000
Income Tax (12,779,000) (10,089,000) (3,081,000)
Profit (loss) from continuing operations 231,136,000 137,336,000 36,180,000
Profit (loss), attributable to [abstract]      
IFS's shareholders 231,136,000 137,336,000 36,180,000
Profit (loss) from continuing operations 231,136,000 137,336,000 36,180,000
Holding, other subsidiaries and eliminations [Member]      
Disclosure of operating segments [line items]      
Third party 708,709,000 685,558,000 630,640,000
Inter-segment 183,082,000 161,201,000 132,981,000
Total income 891,791,000 846,759,000 763,621,000
Consolidated statement of income      
Interest and similar income (9,165,000) 10,609,000 8,817,000
Interest and similar expenses 4,732,000 (1,143,000) (3,492,000)
Net interest and similar income (4,433,000) 9,466,000 5,325,000
(Loss) recovery due to impairment on loans, net of recoveries 1,000    
(Loss) recovery due to impairment of financial investments 16,000 (44,000) (4,000)
Net interest and similar income after impairment loss (4,416,000) 9,422,000 5,321,000
Fee income from financial services, net 151,669,000 190,801,000 232,391,000
Other income (expenses) 143,134,000 71,653,000 (19,774,000)
Result from insurance activities (20,000) (39,000) (13,000)
Depreciation and amortization (114,454,000) (87,718,000) (70,836,000)
Other expenses (178,294,000) (178,789,000) (201,251,000)
Income before exchange difference and Income Tax (2,381,000) 5,330,000 (54,162,000)
Exchange difference 956,000 (5,286,000) 5,205,000
Income Tax (36,050,000) (39,180,000) (56,149,000)
Profit (loss) from continuing operations (37,475,000) (39,136,000) (105,106,000)
Profit (loss), attributable to [abstract]      
IFS's shareholders (48,200,000) (46,519,000) (111,654,000)
Non-controlling interest 10,725,000 7,383,000 6,548,000
Profit (loss) from continuing operations S/ (37,475,000) S/ (39,136,000) S/ (105,106,000)