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 $ 617 $ 433
M&A and corporate finance fees 497 470
Brokerage fees 3,452 2,636
Portfolio management, investment fund and related services fees 10,525 9,412
Other 1,733 1,836
Total fee and commission income 16,824 14,787
Fee and commission expense 1,514 1,302
Net fee and commission income 15,310 13,485
Accretion of purchase price allocation (PPA) adjustments included in Other 141 361
Brokerage expense 208 168
of which: Global Wealth Management    
Net fee And Commission Income [Line Items]    
Total fee and commission income 9,944 8,759
of which: Personal & Corporate Banking    
Net fee And Commission Income [Line Items]    
Total fee and commission income 1,734 1,519
of which: Asset Management    
Net fee And Commission Income [Line Items]    
Total fee and commission income 2,064 1,922
of which: Investment Bank    
Net fee And Commission Income [Line Items]    
Total fee and commission income 3,044 2,493
of which: Non-core and Legacy    
Net fee And Commission Income [Line Items]    
Total fee and commission income 7 76
of which: Group Items    
Net fee And Commission Income [Line Items]    
Total fee and commission income 30 17
of which: recurring    
Net fee And Commission Income [Line Items]    
Total fee and commission income 10,477 9,372
Net fee and commission income 9,731 8,831
of which: recurring | of which: Global Wealth Management    
Net fee And Commission Income [Line Items]    
Net fee and commission income 7,328 6,630
of which: recurring | of which: Personal & Corporate Banking    
Net fee And Commission Income [Line Items]    
Net fee and commission income 900 788
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 6,305 5,342
Net fee and commission income 5,537 4,585
of which: transaction-based | of which: Global Wealth Management    
Net fee And Commission Income [Line Items]    
Net fee and commission income 2,118 1,713
of which: transaction-based | of which: Personal & Corporate Banking    
Net fee And Commission Income [Line Items]    
Net fee and commission income 738 627
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