v3.26.1
FVM - Fair value hierarchy - Liabilities (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading $ 61,882 $ 53,700
Derivative financial instruments 199,336 156,243
Brokerage payables designated at fair value 78,536 62,202
Debt issued designated at fair value 121,175 113,794
Other financial liabilities designated at fair value 29,826 28,184
Total financial liabilities measured at fair value through profit or loss 490,755 414,123
of which: Equity instruments    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 40,581 32,734
of which: Corporate and municipal bonds    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 10,237 11,867
of which: Government bills / bonds    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 8,815 6,901
of which: Investment fund units    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 2,117 2,054
of which: Foreign exchange    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 57,268 49,895
of which: Interest rate    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 28,169 30,856
of which: Equity / index    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 101,802 62,620
of which: Credit    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 5,393 4,366
of which: Commodities    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 5,605 8,043
Loan commitments measured at FVTPL    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 37 33
of which: Financial liabilities related to unit-linked investment contracts    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 22,838 21,052
of which: Securities financing transactions    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 4,259 3,848
of which: Over-the-counter debt instruments and others    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 2,730 3,284
Level 1    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 48,709 39,315
Derivative financial instruments 1,422 688
Brokerage payables designated at fair value 0 0
Debt issued designated at fair value 0 0
Other financial liabilities designated at fair value 0 0
Total financial liabilities measured at fair value through profit or loss 50,131 40,003
Level 1 | of which: Equity instruments    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 40,106 32,533
Level 1 | of which: Corporate and municipal bonds    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 8 12
Level 1 | of which: Government bills / bonds    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 6,725 4,894
Level 1 | of which: Investment fund units    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 1,864 1,874
Level 1 | of which: Foreign exchange    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 427 346
Level 1 | of which: Interest rate    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 0 0
Level 1 | of which: Equity / index    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 0 0
Level 1 | of which: Credit    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 0 0
Level 1 | of which: Commodities    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 0 2
Level 1 | Loan commitments measured at FVTPL    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 0 0
Level 1 | of which: Financial liabilities related to unit-linked investment contracts    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 0 0
Level 1 | of which: Securities financing transactions    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 0 0
Level 1 | of which: Over-the-counter debt instruments and others    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 0 0
Level 2    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 13,120 14,278
Derivative financial instruments 192,561 150,575
Brokerage payables designated at fair value 78,536 62,202
Debt issued designated at fair value 108,708 101,103
Other financial liabilities designated at fair value 28,502 26,548
Total financial liabilities measured at fair value through profit or loss 421,427 354,706
Level 2 | of which: Equity instruments    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 427 135
Level 2 | of which: Corporate and municipal bonds    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 10,226 11,818
Level 2 | of which: Government bills / bonds    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 2,091 2,007
Level 2 | of which: Investment fund units    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 252 177
Level 2 | of which: Foreign exchange    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 56,740 49,473
Level 2 | of which: Interest rate    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 27,883 30,539
Level 2 | of which: Equity / index    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 97,427 58,396
Level 2 | of which: Credit    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 4,849 4,052
Level 2 | of which: Commodities    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 5,589 8,024
Level 2 | Loan commitments measured at FVTPL    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 8 6
Level 2 | of which: Financial liabilities related to unit-linked investment contracts    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 22,838 21,052
Level 2 | of which: Securities financing transactions    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 3,816 3,389
Level 2 | of which: Over-the-counter debt instruments and others    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 1,849 2,107
Level 3    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 53 107
Derivative financial instruments 5,353 4,981
Brokerage payables designated at fair value 0 0
Debt issued designated at fair value 12,467 12,691
Other financial liabilities designated at fair value 1,324 1,636
Total financial liabilities measured at fair value through profit or loss 19,197 19,415
Level 3 | of which: Equity instruments    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 48 65
Level 3 | of which: Corporate and municipal bonds    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 3 37
Level 3 | of which: Government bills / bonds    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 0 0
Level 3 | of which: Investment fund units    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Financial liabilities at fair value held for trading 1 3
Level 3 | of which: Foreign exchange    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 101 77
Level 3 | of which: Interest rate    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 287 317
Level 3 | of which: Equity / index    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 4,375 4,224
Level 3 | of which: Credit    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 544 314
Level 3 | of which: Commodities    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 16 16
Level 3 | Loan commitments measured at FVTPL    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Derivative financial instruments 30 26
Level 3 | of which: Financial liabilities related to unit-linked investment contracts    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 0 0
Level 3 | of which: Securities financing transactions    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value 443 459
Level 3 | of which: Over-the-counter debt instruments and others    
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]    
Other financial liabilities designated at fair value $ 881 $ 1,177