Investments (Changes in Net Unrealized Investment Gains (Losses)) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($)
Investments, Debt and Equity Securities [Abstract]
Unrealized investment gains (losses), beginning of period	$ 3,908
Unrealized investment gains (losses) during the period	(12,878)
Unrealized investment gains (losses) relating to: Future policy benefits	3,569
Unrealized investment gains (losses) relating to: DAC, VOBA and DSI	595
Unrealized investment gains (losses) relating to: Deferred income tax benefit (expense)	1,830
Unrealized investment gains (losses), end of period	(2,976)
Change in net unrealized investment gains (losses)	$ (6,884)