v3.22.0.1
Business Segments - Assets by Segment (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]    
Total $ 1,463,988 $ 1,163,028
Investment Banking [Member]    
Segment Reporting Information [Line Items]    
Total 144,157 116,242
Global Markets [Member]    
Segment Reporting Information [Line Items]    
Total 1,082,378 844,606
Asset Management [Member]    
Segment Reporting Information [Line Items]    
Total 91,115 95,751
Consumer & Wealth Management [Member]    
Segment Reporting Information [Line Items]    
Total $ 146,338 $ 106,429