Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pre-tax
Other comprehensive (loss) income	$ (3,866)	$ (3,360)	$ 1,720
Tax
Other comprehensive (loss) income	822	711	(366)
After-tax
Other comprehensive (loss) income, after-tax	(3,044)	(2,649)	1,354
Discontinued Operations, Held-for-sale
After-tax
Total investments		32,055
Unrealized net capital gains and losses
Pre-tax
Unrealized net holding gains and losses arising during the period, net of related offsets	(4,470)	(2,839)	2,512
Less: reclassification adjustment of net gains and losses on investments and derivatives	(848)	436	870
Other comprehensive (loss) income	(3,622)	(3,275)	1,642
Tax
Unrealized net holding gains and losses arising during the period, net of related offsets	949	601	(532)
Less: reclassification adjustment of net gains and losses on investments and derivatives	178	(92)	(183)
Other comprehensive (loss) income	771	693	(349)
After-tax
Unrealized net holding gains and losses arising during the period, net of related offsets	(3,521)	(2,238)	1,980
Less: reclassification adjustment of net gains and losses on investments and derivatives	(670)	344	687
Other comprehensive (loss) income, after-tax	(2,851)	(2,582)	1,293
Unrealized net capital gains and losses | Discontinued Operations, Held-for-sale
After-tax
Total investments		2,400
Unrealized foreign currency translation adjustments
Pre-tax
Other comprehensive (loss) income	(190)	(10)	66
Tax
Other comprehensive (loss) income	40	2	(14)
After-tax
Other comprehensive (loss) income, after-tax	(150)	(8)	52
Unamortized pension and other postretirement prior service credit
Pre-tax
Other comprehensive (loss) income	(54)	(75)	12
Tax
Other comprehensive (loss) income	11	16	(3)
After-tax
Other comprehensive (loss) income, after-tax	$ (43)	$ (59)	$ 9