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Segment, Geographic and Revenue Information - Assets by Business Segment (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Segment Reporting Information    
Assets $ 1,173,776 $ 1,188,140
Institutional Securities    
Segment Reporting Information    
Assets 790,857 792,135
Wealth Management    
Segment Reporting Information    
Assets 364,952 378,438
Investment Management    
Segment Reporting Information    
Assets $ 17,967 $ 17,567