Financial Instruments - Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) - Not designated as hedging instrument - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Net gain (loss) from investment activities
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	$ (158)	$ 163
Equity contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	(152)	236
Credit contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	1	(43)
Commodity contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	$ (7)	$ (30)