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Investments - Summary of Carrying Value of Total Investments (Detail) (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Schedule of Investments [Line Items]    
Trading securities [1] $ 3,378 $ 2,789
Equity securities at FVTNI [1] 2,896 2,282
Investments [2] 15,144 13,271
Deferred Cash Compensation Plan Mutual Fund Investments [Member]    
Schedule of Investments [Line Items]    
Debt securities 27  
Investments 34 37
Consolidated Sponsored Investment Products [Member]    
Schedule of Investments [Line Items]    
Trading securities 3,355 2,782
Equity securities at FVTNI 2,102 1,681
Investments $ 10,525 $ 9,131
[1] Amounts include investments held to economically hedge the impact of market valuation changes on certain deferred cash compensation plans. Amounts related to deferred cash compensation plans included within debt securities comprised $27 million as of June 30, 2026, and amounts included within equity securities held at fair value recorded through net income ("FVTNI") comprised $34 million and $37 million at June 30, 2026 and December 31, 2025, respectively.
[2] At June 30, 2026, cash and cash equivalents, investments, other assets and other liabilities include $180 million, $9.5 billion, $42 million and $3.7 billion, respectively, related to consolidated variable interest entities (“VIEs”). At December 31, 2025, cash and cash equivalents, investments, other assets and other liabilities include $428 million, $8.5 billion, $76 million and $4.1 billion, respectively, related to consolidated VIEs.