Financial Instruments - Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) - Not designated as hedging instrument - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net gain (loss) from investment activities
Derivative [Line Items]
Gain (loss) on derivatives not designated as hedging instruments recognized in income	[1]	$ 357	$ (351)	$ 163	$ (636)
Equity Contract [Member]
Derivative [Line Items]
Gain (loss) on derivatives not designated as hedging instruments recognized in income	[1]	392	(310)	483	(634)
Credit Risk Contract [Member]
Derivative [Line Items]
Gain (loss) on derivatives not designated as hedging instruments recognized in income	[1]	$ (35)	$ (41)	$ (320)	$ (2)

[1] Gains (losses) recognized on derivatives are classified in net (loss) gain from investment activities in our condensed consolidated statements of operations for our Investment segment.