v3.26.1
DERIVATIVE FINANCIAL INSTRUMENTS (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Derivative Financial Instruments Total [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value R$ 3,905,342,929 R$ 3,857,952,518
Fair value 2,581,766 3,733,277
Purchase Commitments [Member] | Futures contract [member]    
IfrsStatementLineItems [Line Items]    
Nominal value 232,864,244 211,703,083
Fair value (450,905) 313,498
Derivative Financial Instruments Purchase Commitments [Member] | Futures contract [member] | Derivative Instruments Interbank Market [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 150,634,305 178,029,255
Fair value 17,542 133,681
Derivative Financial Instruments Purchase Commitments [Member] | Futures contract [member] | Derivative Instruments Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 54,344,313 22,985,640
Fair value (471,042) 140,203
Derivative Financial Instruments Purchase Commitments [Member] | Futures contract [member] | Derivative Instruments Other [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 27,885,626 10,688,188
Fair value 2,595 39,614
Derivative Financial Instruments Purchase Commitments [Member] | Option contract [member]    
IfrsStatementLineItems [Line Items]    
Nominal value 783,864,910 685,622,189
Fair value 1,828,145 1,178,745
Derivative Financial Instruments Purchase Commitments [Member] | Option contract [member] | Derivative Instruments Interbank Market [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 718,584,779 528,190,365
Fair value 106,261 504,563
Derivative Financial Instruments Purchase Commitments [Member] | Option contract [member] | Derivative Instruments Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 9,616,237 3,949,723
Fair value 1,121,228 113,072
Derivative Financial Instruments Purchase Commitments [Member] | Option contract [member] | Derivative Instruments Other [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 55,663,894 153,482,101
Fair value 600,656 561,110
Derivative Financial Instruments Purchase Commitments [Member] | Forward contract [member]    
IfrsStatementLineItems [Line Items]    
Nominal value 76,859,205 64,273,935
Fair value (200,542) 2,528,685
Derivative Financial Instruments Purchase Commitments [Member] | Forward contract [member] | Derivative Instruments Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 64,714,131 62,442,929
Fair value (1,459,502) 2,569,853
Derivative Financial Instruments Purchase Commitments [Member] | Forward contract [member] | Derivative Instruments Other [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 12,145,074 1,831,006
Fair value 1,258,960 (41,168)
Derivative Financial Instruments Sale Commitments [Member] | Futures contract [member]    
IfrsStatementLineItems [Line Items]    
Nominal value 165,612,193 161,641,895
Fair value 523,762 (174,595)
Derivative Financial Instruments Sale Commitments [Member] | Futures contract [member] | Derivative Instruments Interbank Market [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 111,724,128 95,605,090
Fair value (21,535) (107,908)
Derivative Financial Instruments Sale Commitments [Member] | Futures contract [member] | Derivative Instruments Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 30,741,161 48,246,297
Fair value 530,151 (29,358)
Derivative Financial Instruments Sale Commitments [Member] | Futures contract [member] | Derivative Instruments Other [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 23,146,904 17,790,508
Fair value 15,146 (37,329)
Derivative Financial Instruments Sale Commitments [Member] | Option contract [member]    
IfrsStatementLineItems [Line Items]    
Nominal value 790,685,040 672,980,325
Fair value (2,645,067) (1,656,652)
Derivative Financial Instruments Sale Commitments [Member] | Option contract [member] | Derivative Instruments Interbank Market [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 721,019,609 513,818,125
Fair value (113,341) (440,226)
Derivative Financial Instruments Sale Commitments [Member] | Option contract [member] | Derivative Instruments Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 15,908,308 6,870,683
Fair value (947,331) (400,855)
Derivative Financial Instruments Sale Commitments [Member] | Option contract [member] | Derivative Instruments Other [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 53,757,123 152,291,517
Fair value (1,584,395) (815,571)
Derivative Financial Instruments Sale Commitments [Member] | Forward contract [member]    
IfrsStatementLineItems [Line Items]    
Nominal value 53,889,171 47,310,325
Fair value 456,033 (1,117,059)
Derivative Financial Instruments Sale Commitments [Member] | Forward contract [member] | Derivative Instruments Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 45,530,533 46,463,548
Fair value 520,221 (1,522,017)
Derivative Financial Instruments Sale Commitments [Member] | Forward contract [member] | Derivative Instruments Other [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 8,358,638 846,777
Fair value (64,188) 404,958
Derivative Financial Instruments Assets Long Position [Member] | Swap contract [member]    
IfrsStatementLineItems [Line Items]    
Nominal value 928,071,044 1,080,360,424
Fair value 9,550,875 13,634,425
Derivative Financial Instruments Assets Long Position [Member] | Swap contract [member] | Derivative Instruments Interbank Market [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 75,975,089 57,567,711
Fair value 4,695,032 4,561,085
Derivative Financial Instruments Assets Long Position [Member] | Swap contract [member] | Derivative Instruments Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 521,032,423 319,020,245
Fair value 2,485,099 7,472,073
Derivative Financial Instruments Assets Long Position [Member] | Swap contract [member] | Derivative Instruments Other [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 15,950,733 10,857,508
Fair value 1,885,923 1,179,832
Derivative Financial Instruments Assets Long Position [Member] | Swap contract [member] | Derivative Instruments Fixed Rate [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 315,081,578 692,873,598
Fair value 454,827 379,570
Derivative Financial Instruments Assets Long Position [Member] | Swap contract [member] | Derivative Instruments I G P M [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 31,221 41,362
Fair value 29,994 41,865
Derivative Financial Instruments Liabilities Unrestricted Position [Member] | Swap contract [member]    
IfrsStatementLineItems [Line Items]    
Nominal value 873,497,122 934,060,342
Fair value (6,480,535) (10,973,770)
Derivative Financial Instruments Liabilities Unrestricted Position [Member] | Swap contract [member] | Derivative Instruments Interbank Market [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 32,343,513 246,185,275
Fair value (1,378,695) (2,408,270)
Derivative Financial Instruments Liabilities Unrestricted Position [Member] | Swap contract [member] | Derivative Instruments Foreign Currency [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 355,159,513 202,546,445
Fair value (2,649,262) (7,527,737)
Derivative Financial Instruments Liabilities Unrestricted Position [Member] | Swap contract [member] | Derivative Instruments Other [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 15,042,788 7,770,763
Fair value (1,610,770) (564,200)
Derivative Financial Instruments Liabilities Unrestricted Position [Member] | Swap contract [member] | Derivative Instruments Fixed Rate [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 470,848,308 477,454,859
Fair value (725,508) (314,670)
Derivative Financial Instruments Liabilities Unrestricted Position [Member] | Swap contract [member] | Derivative Instruments I G P M [Member]    
IfrsStatementLineItems [Line Items]    
Nominal value 103,000 103,000
Fair value R$ (116,300) R$ (158,893)