v3.26.1
Risk and Capital Management - Schedule of Position of Accounts Subject to Interest Rate Risk (Details) - BRL (R$)
R$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Financial assets R$ 2,880,511 R$ 2,673,301
Total 2,042,788 1,912,804
Interbank deposits 66,195 66,931
Securities purchased under agreements to resell 280,595 243,220
Loan and lease operations 1,083,798 1,025,493
Financial assets at fair value through other comprehensive income 132,473 106,303
At fair value through profit or loss 705,250 654,194
Derivatives 73,384 92,439
Other financial assets 164,029 136,713
Financial liabilities 2,424,121 2,239,979
Deposits 1,114,482 1,054,741
Securities sold under repurchase agreements 434,607 388,787
Interbank market funds 406,170 372,294
Derivatives 69,760 85,413
Structured notes 57 318
Other financial liabilities 241,448 192,407
Interest rates    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Financial assets 2,742,067 2,558,504
Financial assets at fair value through other comprehensive income 132,473 106,303
Financial liabilities 2,185,738 2,046,643
Interest rates | At amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 2,114,292 1,960,368
Deposits 1,114,482 1,054,741
Securities sold under repurchase agreements 434,607 388,787
Interbank market funds 406,170 372,294
Institutional market funds 154,194 140,547
Other financial liabilities 4,839 3,999
Interest rates | At fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
At fair value through profit or loss 71,446 86,275
Interest rates | Financial liabilities at fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Derivatives 69,760 85,413
Structured notes 57 318
Other financial liabilities 1,629 544
Difference assets / liabilities 556,329 511,861
Interest rates | Financial assets at amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 1,904,344 1,798,007
Central Bank of Brazil deposits 146,283 138,518
Interbank deposits 66,195 66,925
Securities purchased under agreements to resell 280,595 243,219
Securities 327,473 323,852
Loan and lease operations 1,083,798 1,025,493
Interest rates | Financial assets at fair value through other comprehensive income    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Securities 628,774 560,143
At fair value through profit or loss 705,250 654,194
Derivatives 73,384 92,439
Other financial assets 3,092 1,612
0-30    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Deposits 1,011,751 894,482
0-30 | Interest rates    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Financial assets 559,569 617,119
Financial assets at fair value through other comprehensive income 7,532 17,377
Financial liabilities 746,216 777,435
Cumulative difference R$ (186,647) R$ (160,316)
Ratio of cumulative difference to total interest-bearing assets (6.80%) (6.30%)
0-30 | Interest rates | At amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total R$ 734,808 R$ 766,631
Deposits 378,615 382,252
Securities sold under repurchase agreements 329,271 322,797
Interbank market funds 25,455 56,173
Institutional market funds 908 5,005
Other financial liabilities 559 404
0-30 | Interest rates | At fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
At fair value through profit or loss 11,408 10,804
0-30 | Interest rates | Financial liabilities at fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Derivatives 11,408 10,775
Other financial liabilities 0 29
Difference assets / liabilities (186,647) (160,316)
0-30 | Interest rates | Financial assets at amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 534,045 533,678
Central Bank of Brazil deposits 146,283 138,518
Interbank deposits 42,901 33,082
Securities purchased under agreements to resell 179,964 201,082
Securities 9,610 12,910
Loan and lease operations 155,287 148,086
0-30 | Interest rates | Financial assets at fair value through other comprehensive income    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Securities 6,661 50,816
At fair value through profit or loss 17,992 66,064
Derivatives 11,301 15,232
Other financial assets 30 16
31-180 days | Interest rates    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Financial assets 474,979 433,855
Financial assets at fair value through other comprehensive income 11,521 16,118
Financial liabilities 232,628 217,860
Cumulative difference R$ 55,704 R$ 55,679
Ratio of cumulative difference to total interest-bearing assets 2.00% 2.20%
31-180 days | Interest rates | At amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total R$ 222,355 R$ 203,641
Deposits 90,880 90,133
Securities sold under repurchase agreements 31,537 21,378
Interbank market funds 96,811 87,015
Institutional market funds 2,747 5,057
Other financial liabilities 380 58
31-180 days | Interest rates | At fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
At fair value through profit or loss 10,273 14,219
31-180 days | Interest rates | Financial liabilities at fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Derivatives 10,199 14,179
Other financial liabilities 74 40
Difference assets / liabilities 242,351 215,995
31-180 days | Interest rates | Financial assets at amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 422,780 347,519
Interbank deposits 8,817 10,559
Securities purchased under agreements to resell 85,646 41,460
Securities 31,094 38,878
Loan and lease operations 297,223 256,622
31-180 days | Interest rates | Financial assets at fair value through other comprehensive income    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Securities 30,904 57,814
At fair value through profit or loss 40,678 70,218
Derivatives 9,750 12,321
Other financial assets 24 83
366-720 | Interest rates    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Financial assets 324,977 245,916
Financial assets at fair value through other comprehensive income 23,676 6,382
Financial liabilities 153,323 153,291
Cumulative difference R$ 227,358 R$ 148,304
Ratio of cumulative difference to total interest-bearing assets 8.30% 5.80%
366-720 | Interest rates | At amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total R$ 146,134 R$ 137,520
Deposits 57,871 53,767
Securities sold under repurchase agreements 2,500 1,458
Interbank market funds 77,530 74,950
Institutional market funds 7,768 6,971
Other financial liabilities 465 374
366-720 | Interest rates | At fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
At fair value through profit or loss 7,189 15,771
366-720 | Interest rates | Financial liabilities at fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Derivatives 6,988 15,626
Structured notes   0
Other financial liabilities 201 145
Difference assets / liabilities 171,654 92,625
366-720 | Interest rates | Financial assets at amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 230,622 200,787
Interbank deposits 7,927 9,888
Securities purchased under agreements to resell 7,927  
Securities 32,879 36,794
Loan and lease operations 181,889 154,105
366-720 | Interest rates | Financial assets at fair value through other comprehensive income    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Securities 60,564 24,538
At fair value through profit or loss 70,679 38,747
Derivatives 8,311 13,888
Other financial assets 1,804 321
1 to 5 years | Interest rates    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Financial assets 995,761 923,202
Financial assets at fair value through other comprehensive income 65,425 47,809
Financial liabilities 902,936 745,329
Cumulative difference R$ 320,183 R$ 326,177
Ratio of cumulative difference to total interest-bearing assets 11.70% 12.70%
1 to 5 years | Interest rates | At amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total R$ 870,770 R$ 710,423
Deposits 567,747 503,422
Securities sold under repurchase agreements 35,140 5,279
Interbank market funds 199,063 148,059
Institutional market funds 65,385 50,500
Other financial liabilities 3,435 3,163
1 to 5 years | Interest rates | At fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
At fair value through profit or loss 32,166 34,906
1 to 5 years | Interest rates | Financial liabilities at fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Derivatives 32,049 34,756
Structured notes 0 12
Other financial liabilities 117 138
Difference assets / liabilities 92,825 177,873
1 to 5 years | Interest rates | Financial assets at amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 540,365 507,268
Interbank deposits 6,543 13,382
Securities purchased under agreements to resell 6,602  
Securities 187,985 164,332
Loan and lease operations 339,235 329,554
1 to 5 years | Interest rates | Financial assets at fair value through other comprehensive income    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Securities 356,538 332,313
At fair value through profit or loss 389,971 368,125
Derivatives 32,421 35,285
Other financial assets 1,012 527
Over 5 years | Interest rates    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Financial assets 386,781 338,412
Financial assets at fair value through other comprehensive income 24,319 18,617
Financial liabilities 150,635 152,728
Cumulative difference R$ 556,329 R$ 511,861
Ratio of cumulative difference to total interest-bearing assets 20.30% 20.00%
Over 5 years | Interest rates | At amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total R$ 140,225 R$ 142,153
Deposits 19,369 25,167
Securities sold under repurchase agreements 36,159 37,875
Interbank market funds 7,311 6,097
Institutional market funds 77,386 73,014
Over 5 years | Interest rates | At fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
At fair value through profit or loss 10,410 10,575
Over 5 years | Interest rates | Financial liabilities at fair value through profit or loss    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Derivatives 9,116 10,077
Structured notes 57 306
Other financial liabilities 1,237 192
Difference assets / liabilities 236,146 185,684
Over 5 years | Interest rates | Financial assets at amortized cost    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Total 176,532 208,755
Interbank deposits 7 14
Securities purchased under agreements to resell 456 677
Securities 65,905 70,938
Loan and lease operations 110,164 137,126
Over 5 years | Interest rates | Financial assets at fair value through other comprehensive income    
Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items]    
Securities 174,107 94,662
At fair value through profit or loss 185,930 111,040
Derivatives 11,601 15,713
Other financial assets R$ 222 R$ 665