v3.25.2
Investments - Summary of Cost and Carrying Value of Equity and Trading Debt Securities (Detail) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Schedule of Investments [Line Items]    
Total trading debt securities, Cost $ 2,179 $ 1,847
Total trading debt, Carrying Value 2,172 1,823
Equity securities at FVTNI, Carrying Value [1] 2,278 1,950
Corporate Debt [Member]    
Schedule of Investments [Line Items]    
Total trading debt securities, Cost 1,422 1,047
Total trading debt, Carrying Value 1,450 1,061
Government Debt [Member]    
Schedule of Investments [Line Items]    
Total trading debt securities, Cost 453 578
Total trading debt, Carrying Value 444 557
Asset/Mortgage-Backed Debt [Member]    
Schedule of Investments [Line Items]    
Total trading debt securities, Cost 304 222
Total trading debt, Carrying Value 278 205
Equity Securities [Member]    
Schedule of Investments [Line Items]    
Equity securities at FVTNI, Cost 2,105 1,843
Equity securities at FVTNI, Carrying Value $ 2,278 $ 1,950
[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 equity securities held at fair value recorded through net income ("FVTNI") comprised $13 million and $12 million at June 30, 2025 and December 31, 2024, respectively.