v3.26.1
Segment Information - Schedule of Operating Segments (Details) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Operating revenues R$ 167,780 R$ 168,050 R$ 154,971
Interest margin 112,724 103,848 97,712
Commissions and Banking Fees 46,997 47,071 45,731
Income from insurance and private pension operations before claim and selling expenses 8,731 6,982 6,613
Other income / (expenses) (672)    
Other revenues   10,149 4,915
Cost of Credit (28,833) (32,311) (30,445)
Operating margin 138,947 135,739 124,526
Other operating income / (expenses) (88,697) (88,183) (84,826)
Non-interest expenses (79,176) (79,416) (75,759)
Tax expenses for ISS, PIS and COFINS and Other (10,938) (9,814) (9,987)
Share of profit or (loss) in associates and joint ventures 1,417 1,047 920
Income before income tax and social contribution 50,250 47,556 39,700
Income tax and social contribution (4,401) (5,428) (5,823)
Non-controlling interests (992) (1,043) (772)
Net income 44,857 41,085 33,105
Total assets 3,066,169 2,854,475 2,543,100
Total liabilities 2,851,093 2,633,191 2,344,050
Investments in associates and joint ventures 10,840 10,074 9,293
Fixed assets, net 12,635 13,263 9,135
Goodwill and Intangible assets, net 24,099 23,997 23,364
Retail Business      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Operating revenues 112,204 101,057 96,595
Interest margin 70,383 61,956 59,099
Commissions and Banking Fees 29,798 28,559 28,016
Income from insurance and private pension operations before claim and selling expenses 12,023 10,542 9,480
Cost of Credit (31,616) (29,819) (32,139)
Claims (1,624) 1,589 (1,487)
Operating margin 78,964 69,649 62,969
Other operating income / (expenses) (51,604) (48,552) (45,560)
Non-interest expenses (44,462) (41,946) (39,085)
Tax expenses for ISS, PIS and COFINS and Other (7,142) (6,606) (6,475)
Income before income tax and social contribution 27,360 21,097 17,409
Income tax and social contribution (7,701) (5,482) (4,232)
Non-controlling interests (529) (491) (78)
Net income 19,130 15,124 13,099
Total assets 1,896,887 1,842,885 1,677,189
Total liabilities 1,820,419 1,774,738 1,610,852
Investments in associates and joint ventures 2,669 2,343 2,156
Fixed assets, net 7,724 7,490 7,333
Goodwill and Intangible assets, net 8,322 8,808 9,419
Wholesale Business      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Operating revenues 62,620 58,014 54,631
Interest margin 45,248 41,259 39,980
Commissions and Banking Fees 16,639 16,176 14,274
Income from insurance and private pension operations before claim and selling expenses 733 579 377
Cost of Credit (4,994) (4,675) (4,803)
Claims (34) 26 (22)
Operating margin 57,592 53,313 49,806
Other operating income / (expenses) (23,175) (21,248) (20,373)
Non-interest expenses (20,278) (18,438) (17,722)
Tax expenses for ISS, PIS and COFINS and Other (2,897) (2,810) (2,651)
Income before income tax and social contribution 34,417 32,065 29,433
Income tax and social contribution (10,652) (10,502) (9,022)
Non-controlling interests (759) (650) (655)
Net income 23,006 20,913 19,756
Total assets 1,464,874 1,418,456 1,228,153
Total liabilities 1,374,833 1,333,954 1,150,141
Fixed assets, net 1,871 1,590 1,690
Goodwill and Intangible assets, net 10,037 9,383 8,338
Activities with the Market + Corporation      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Operating revenues 9,569 9,887 5,572
Interest margin 8,778 9,232 5,019
Commissions and Banking Fees 454 375 309
Income from insurance and private pension operations before claim and selling expenses 337 280 244
Operating margin 9,569 9,887 5,572
Other operating income / (expenses) (2,777) (2,541) (1,864)
Non-interest expenses (2,045) (1,755) (1,360)
Tax expenses for ISS, PIS and COFINS and Other (732) (786) (504)
Income before income tax and social contribution 6,792 7,346 3,708
Income tax and social contribution (2,043) (1,879) (935)
Non-controlling interests (55) (101) (10)
Net income 4,694 5,366 2,763
Total assets 101,085 243,230 195,290
Total liabilities 61,964 185,422 150,705
Investments in associates and joint ventures 6,280 6,214 5,946
ITAÚ UNIBANCO      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Operating revenues 184,393 168,958 156,798
Interest margin 124,409 112,447 104,098
Commissions and Banking Fees 46,891 45,110 42,599
Income from insurance and private pension operations before claim and selling expenses 13,093 11,401 10,101
Cost of Credit (36,610) (34,494) (36,942)
Claims (1,658) 1,615 (1,509)
Operating margin 146,125 132,849 118,347
Other operating income / (expenses) (77,556) (72,341) (67,797)
Non-interest expenses (66,785) (62,139) (58,167)
Tax expenses for ISS, PIS and COFINS and Other (10,771) (10,202) (9,630)
Income before income tax and social contribution 68,569 60,508 50,550
Income tax and social contribution (20,396) (17,863) (14,189)
Non-controlling interests (1,343) (1,242) (743)
Net income 46,830 41,403 35,618
Total assets 3,096,277 3,048,537 2,696,522
Total liabilities 2,890,647 2,838,080 2,507,587
Investments in associates and joint ventures 8,949 8,557 8,102
Fixed assets, net 9,595 9,080 9,023
Goodwill and Intangible assets, net 18,359 18,191 17,757
Adjustments      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Operating revenues (16,613) (908) (1,827)
Interest margin (11,685) (8,599) (6,386)
Commissions and Banking Fees 106 1,961 3,132
Income from insurance and private pension operations before claim and selling expenses (4,362) (4,419) (3,488)
Other income / (expenses) (672)    
Other revenues   10,149 4,915
Cost of Credit 7,777 2,183 6,497
Claims 1,658 1,615 1,509
Operating margin (7,178) 2,890 6,179
Other operating income / (expenses) (11,141) (15,842) (17,029)
Non-interest expenses (12,391) (17,277) (17,592)
Tax expenses for ISS, PIS and COFINS and Other (167) 388 (357)
Share of profit or (loss) in associates and joint ventures 1,417 1,047 920
Income before income tax and social contribution (18,319) (12,952) (10,850)
Income tax and social contribution 15,995 12,435 8,366
Non-controlling interests 351 199 (29)
Net income (1,973) (318) (2,513)
Total assets (30,108) (194,062) (153,422)
Total liabilities (39,554) (204,889) (163,537)
Investments in associates and joint ventures 1,891 1,517 1,191
Fixed assets, net 3,040 4,183 112
Goodwill and Intangible assets, net R$ 5,740 R$ 5,806 R$ 5,607