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	$ 117,511	$ 121,111
Trading securities	4,427	4,442
Equity securities	314	127
Mortgage loans on real estate	17,893	16,681
Derivative investments	5,437	3,109
Other investments	3,449	3,025
Cash and invested cash	2,331	1,462	$ 1,879	$ 1,848
Accrued investment income	1,157	1,217
Other assets	22,949	19,401
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