v3.26.1
Business Segments - Assets by Segment (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Segment Reporting [Line Items]      
Total $ 2,127,711 $ 2,060,180 $ 1,809,320
Global Banking & Markets      
Segment Reporting [Line Items]      
Total 1,882,176   1,582,670
Asset & Wealth Management      
Segment Reporting [Line Items]      
Total 215,730   198,570
Platform Solutions      
Segment Reporting [Line Items]      
Total $ 29,805   $ 28,080