v3.26.1
Provisions, contingent assets and contingent liabilities - Schedule of Civil, Labor and Other Risks Provisions (Details) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of other provisions [line items]    
Opening balance - 01/01 R$ 19,209  
Closing balance 17,791 R$ 19,209
Civil    
Disclosure of other provisions [line items]    
Opening balance - 01/01 3,207 3,203
(-) Provisions guaranteed by indemnity clause (169) (205)
Subtotal 3,038 2,998
Adjustment / Interest 115 122
Changes in the period reflected in income 1,228 1,487
Increase 1,835 2,062
Reversal (607) (575)
Payment / Transfer (1,426) (1,569)
Subtotal 2,955 3,038
(+) Provisions guaranteed by indemnity clause 197 169
Closing balance 3,152 3,207
Current 1,434 1,535
Non-current 1,718 1,672
Labor    
Disclosure of other provisions [line items]    
Opening balance - 01/01 8,213 7,821
(-) Provisions guaranteed by indemnity clause (671) (962)
Subtotal 7,542 6,859
Adjustment / Interest 578 515
Changes in the period reflected in income 3,334 3,539
Increase 3,793 3,958
Reversal (459) (419)
Payment / Transfer (3,173) (3,371)
Subtotal 8,281 7,542
(+) Provisions guaranteed by indemnity clause 565 671
Closing balance 8,846 8,213
Current 3,176 3,443
Non-current 5,670 4,770
Other Risks    
Disclosure of other provisions [line items]    
Opening balance - 01/01 1,066 2,141
Subtotal 1,066 2,141
Changes in the period reflected in income 364 325
Increase 650 325
Reversal (286) 0
Payment / Transfer (37) (1,400)
Subtotal 1,393 1,066
Closing balance 1,393 1,066
Current 687 115
Non-current 706 951
Total    
Disclosure of other provisions [line items]    
Opening balance - 01/01 12,486 13,165
(-) Provisions guaranteed by indemnity clause (840) (1,167)
Subtotal 11,646 11,998
Adjustment / Interest 693 637
Changes in the period reflected in income 4,926 5,351
Increase 6,278 6,345
Reversal (1,352) (994)
Payment / Transfer (4,636) (6,340)
Subtotal 12,629 11,646
(+) Provisions guaranteed by indemnity clause 762 840
Closing balance 13,391 12,486
Current 5,297 5,093
Non-current R$ 8,094 R$ 7,393