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Segment, Geographic and Revenue Information - Institutional Securities - Investment Banking Revenues (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Revenue from External Customer [Line Items]      
Investment banking $ 5,599 $ 10,994 $ 7,674
Firm Investment banking revenues from contracts with customers 90.00% 91.00% 92.00%
IS | Operating Segments      
Revenue from External Customer [Line Items]      
Investment banking $ 5,235 $ 10,272 $ 7,204
IS | Operating Segments | Advisory      
Revenue from External Customer [Line Items]      
Investment banking 2,946 3,487 2,008
IS | Operating Segments | Underwriting      
Revenue from External Customer [Line Items]      
Investment banking $ 2,289 $ 6,785 $ 5,196