v3.26.3
Financial Instruments - Equity Investments without Readily Determinable Fair Values (Details) - Equity Investments In Private Companies - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]    
Total initial value $ 1,287 $ 1,068
Cumulative gross unrealized gains 838 310
Cumulative gross unrealized losses and impairment (419) (415)
Total carrying value of equity and other investments without readily determinable fair values $ 1,706 $ 963