Equity (Components of Net Unrealized Appreciation Depreciation of Balances Carried at Fair Value) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020	Dec. 31, 2019
Comprehensive Income Net Of Tax [Line Items]
Fixed maturity securities available-for-sale		$ (52,901)	[1]	$ (60,749)	[2]
Other invested assets		(1,140)		(1,074)
Deferred policy acquisition costs		3,974		3,690		$ 3,616	$ 3,512
Accumulated Other Comprehensive Income Loss Change In Component During Period		(11,603)		(2,319)		2,812
Change In Net Unrealized Appreciation Depreciation [Member]
Comprehensive Income Net Of Tax [Line Items]
Fixed maturity securities available-for-sale		(11,632)		(2,299)		(2,837)
Other invested assets	[3]	(186)		(64)		(29)
Effect On Unrealized Appreciation Depreciation [Member]
Comprehensive Income Net Of Tax [Line Items]
Deferred policy acquisition costs		$ 215		$ 44		$ 54

[1] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of December 31, 2022, the fair value of such investments was $683 million

[2] Excludes limited partnerships that are measured at estimated fair value using the NAV per share (or its equivalent) as a practical expedient. As of December 31, 2021, the fair value of such investments was $581 million.

[3] Includes cash flow hedges. See Note 5 for additional information on cash flow hedges.