Equity (Components of Net Unrealized Appreciation Depreciation of Balances Carried at Fair Value) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Comprehensive Income Net Of Tax [Line Items]
Fixed maturity securities available-for-sale		$ (60,749)	$ (56,735)
Other invested assets		(3,070)	(2,829)
Deferred policy acquisition costs		(3,690)	(3,616)	$ (3,512)	$ (3,398)
Accumulated Other Comprehensive Income Loss Change In Component During Period		(2,319)	2,812	3,123
Change In Net Unrealized Appreciation Depreciation [Member]
Comprehensive Income Net Of Tax [Line Items]
Fixed maturity securities available-for-sale		(2,299)	(2,837)	(3,258)
Other invested assets	[1]	(64)	(29)	(37)
Effect On Unrealized Appreciation Depreciation [Member]
Comprehensive Income Net Of Tax [Line Items]
Deferred policy acquisition costs		$ (44)	$ (54)	$ (98)

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