Reinsurance (Schedule Of Assets In Support Of Reserves) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Ceded Credit Risk [Line Items]
Fixed maturity AFS securities	$ 118,746	$ 123,044
Trading securities	4,482	4,501
Equity securities	318	129
Mortgage loans on real estate	17,991	16,763
Derivative investments	5,437	3,109
Other investments	4,292	3,984
Cash and invested cash	2,612	1,708	$ 2,563	$ 2,345
Accrued investment income	1,189	1,257
Other assets	18,036	15,960
Athene Holding Ltd. [Member]
Ceded Credit Risk [Line Items]
Fixed maturity AFS securities	744	1,531
Trading securities	3,399	3,357
Equity securities	54	17
Mortgage loans on real estate	739	832
Derivative investments	93	103
Other investments	227	167
Cash and invested cash	110	92
Accrued investment income	33	42
Other assets	5	3
Total	5,404	6,144
Commercial [Member]
Ceded Credit Risk [Line Items]
Mortgage loans on real estate	$ 17,089	$ 16,043