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GOODWILL AND INTANGIBLE ASSETS - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2022
Sep. 30, 2022
Sep. 30, 2021
Jul. 01, 2022
Jun. 30, 2022
Dec. 31, 2021
Goodwill [Line Items]            
Goodwill impairment $ 535 $ 535 $ 0      
Goodwill 19,865 19,326     $ 19,597 $ 21,299
Legacy Franchises            
Goodwill [Line Items]            
Goodwill impairment 535          
Goodwill 959 935     934 2,367
Institutional Clients Group            
Goodwill [Line Items]            
Goodwill impairment 0          
Goodwill $ 9,171 $ 8,676     $ 8,948 $ 9,215
Institutional Clients Group | Operating Segments            
Goodwill [Line Items]            
Percentage fair value exceeds carrying value   106.00%     102.00%  
Goodwill   $ 1,500     $ 1,500  
Minimum            
Goodwill [Line Items]            
Percentage fair value exceeds carrying value       106.00%    
Maximum            
Goodwill [Line Items]            
Percentage fair value exceeds carrying value       267.00%