v3.26.1
Net fee and commission income (Detail) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Net fee And Commission Income [Line Items]    
Underwriting Fees $ 679 $ 471
M&A and corporate finance fees 497 470
Brokerage fees 3,453 2,637
Portfolio management, investment fund and related services fees 10,522 9,408
Other 1,592 1,474
Total fee and commission income 16,743 14,459
Fee and commission expense 1,516 1,303
Net fee and commission income 15,227 13,156
Brokerage expense 208 168
of which: Global Wealth Management    
Net fee And Commission Income [Line Items]    
Total fee and commission income 9,940 8,752
of which: Personal & Corporate Banking    
Net fee And Commission Income [Line Items]    
Total fee and commission income 1,694 1,503
of which: Asset Management    
Net fee And Commission Income [Line Items]    
Total fee and commission income 2,064 1,923
of which: Investment Bank    
Net fee And Commission Income [Line Items]    
Total fee and commission income 3,011 2,234
of which: Non-core and Legacy    
Net fee And Commission Income [Line Items]    
Total fee and commission income 4 30
of which: Group Items    
Net fee And Commission Income [Line Items]    
Total fee and commission income 30 18
of which: recurring    
Net fee And Commission Income [Line Items]    
Total fee and commission income 10,526 9,368
Net fee and commission income 9,780 8,737
of which: recurring | of which: Global Wealth Management    
Net fee And Commission Income [Line Items]    
Net fee and commission income 7,328 6,626
of which: recurring | of which: Personal & Corporate Banking    
Net fee And Commission Income [Line Items]    
Net fee and commission income 900 702
of which: recurring | of which: Asset Management    
Net fee And Commission Income [Line Items]    
Net fee and commission income 1,420 1,350
of which: transaction-based    
Net fee And Commission Income [Line Items]    
Total fee and commission income 6,176 5,019
Net fee and commission income 5,406 4,350
of which: transaction-based | of which: Global Wealth Management    
Net fee And Commission Income [Line Items]    
Net fee and commission income 2,114 1,706
of which: transaction-based | of which: Personal & Corporate Banking    
Net fee And Commission Income [Line Items]    
Net fee and commission income 696 663
of which: transaction-based | of which: Asset Management    
Net fee And Commission Income [Line Items]    
Net fee and commission income 17 27
of which: performance-based    
Net fee And Commission Income [Line Items]    
Total fee and commission income 42 73
Net fee and commission income 42 69
of which: performance-based | of which: Asset Management    
Net fee And Commission Income [Line Items]    
Net fee and commission income $ 42 $ 69