Investments (Net Unrealized Investment Gains (Losses)) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Fixed maturity securities	$ (4,919)	$ 8,251
Derivatives	595	320
Other	(10)	(27)
Subtotal	(4,334)	8,544
Amounts allocated from: Future policy benefits	359	(3,210)
Amounts allocated from: DAC, VOBA and DSI	208	(387)
Subtotal	567	(3,597)
Deferred income tax benefit (expense)	791	(1,039)
Net unrealized investment gains (losses)	$ (2,976)	$ 3,908