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Acquisitions - Virtus Acquisition Narrative (Details) - USD ($)
$ in Millions
Jan. 02, 2020
Jan. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Business Acquisition          
Goodwill     $ 34,276 $ 53,330 $ 53,268
Virtus Acquisition          
Business Acquisition          
Percentage of equity interests acquired 70.00%        
Cash purchase price $ 404        
Fair value of redeemable noncontrolling interest 173        
Goodwill $ 253        
Call option exercise period 2 years        
Put option exercise period 3 years        
Virtus Acquisition | Customer relationships          
Business Acquisition          
Identifiable finite lived intangibles assets acquired $ 254        
Virtus Acquisition | Software          
Business Acquisition          
Identifiable finite lived intangibles assets acquired $ 51        
Virtus Acquisition | Virtus Partners          
Business Acquisition          
Noncontrolling interest, ownership percentage by noncontrolling owners 30.00%        
Virtus Acquisition | Virtus Partners | Subsequent Event          
Business Acquisition          
Percentage of equity interests acquired   100.00%      
Noncontrolling interest, ownership percentage by noncontrolling owners   30.00%