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, 2024	Mar. 31, 2023
Net gain (loss) from investment activities
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	$ 163	$ (247)
Equity Contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	236	(284)
Credit Contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	(43)	36
Commodity Contracts
Derivative
Gain (loss) on derivatives not designated as hedging instruments recognized in income	$ (30)	$ 1