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Investments - Summary of Carrying Value of Total Investments (Detail) (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Schedule of Investments [Line Items]    
Trading securities $ 1,951 $ 1,871
Equity securities at FVTNI 2,310 1,585
Total equity method investments 2,669 2,756
Investments [1] 10,216 9,740
Deferred Cash Compensation Plan Equity Method Investments [Member]    
Schedule of Investments [Line Items]    
Total equity method investments 171 241
Deferred Cash Compensation Plan Mutual Fund Investments [Member]    
Schedule of Investments [Line Items]    
Investments 12 14
Deferred Cash Compensation Plans [Member]    
Schedule of Investments [Line Items]    
Total equity method investments 171 241
Other Investments [Member]    
Schedule of Investments [Line Items]    
Investments 457 639
Other Investments [Member] | Deferred Cash Compensation Plans [Member]    
Schedule of Investments [Line Items]    
Investments   9
Consolidated Sponsored Investment Products [Member]    
Schedule of Investments [Line Items]    
Trading securities 1,868 1,829
Equity securities at FVTNI 2,120 1,429
Investments $ 6,470 $ 5,977
[1] At June 30, 2024, cash and cash equivalents, investments, other assets and other liabilities include $185 million, $5.5 billion, $117 million, and $2.3 billion, respectively, related to consolidated variable interest entities (“VIEs”). At December 31, 2023, cash and cash equivalents, investments, other assets and other liabilities include $234 million, $5.0 billion, $83 million, and $2.2 billion, respectively, related to consolidated VIEs.