Investments (Investment Related Gains (Losses) Net) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Investments [Abstract]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	$ 4	$ (13)	$ (38)	$ (24)
Gain on investment activity	11	34	42	45
Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments	(37)	(94)	(112)	(130)
Gain (Loss) on Sale of Equity Investments	(4)	(15)	(2)	(23)
Other impairment losses and change in mortgage loan provision	(9)	(1)	(6)	(3)
Derivatives and other, net	15	11	17	19
Total investment related gains (losses), net	(123)	(240)	(200)	(379)
Change In Fair Value Of Certain Limited Partnership Investments And Other, Net	10	10	7	29
Impairment Losses On Debt Securities Available for Sale	0	(2)	(1)	(3)
Gain (Loss) on Sale of Derivatives	(93)	(114)	(124)	(200)
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net	$ (20)	$ (56)	$ 17	$ (89)