v3.26.1
Business Segments - Assets by Segment (Detail) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Segment Reporting Information [Line Items]    
Total $ 2,060,180 $ 1,809,320
Global Banking & Markets    
Segment Reporting Information [Line Items]    
Total 1,820,273 1,582,670
Asset & Wealth Management    
Segment Reporting Information [Line Items]    
Total 211,271 198,570
Platform Solutions    
Segment Reporting Information [Line Items]    
Total $ 28,636 $ 28,080