Reinsurance (Balance Sheet Reinsurance Results) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effects of Reinsurance [Line Items]
Reinsurance recoverables	$ 34,561,825	$ 38,598,767
Policy loans	(505,367)	(1,327,485)
Deferred policy acquisition costs	(6,616,097)	(6,830,972)	$ (2,433,936)	$ (1,855,698)
Deferred sales inducements	(275,574)	(374,649)	$ 0
Other assets	1,327,393	1,140,948
Other Liabilities	3,407,156	2,264,477
Impacts of Reinsurance
Effects of Reinsurance [Line Items]
Reinsurance recoverables	34,561,825	38,598,767
Policy loans	(1,011,112)	(156,749)
Deferred policy acquisition costs	(3,155,419)	(2,575,232)
Deferred sales inducements	(33,346)	(37,905)
Other assets	1,142,083	850,681
Policyholders’ account balances	7,137,766	14,386,443
Future policy benefits	5,173,784	5,286,252
Other Liabilities	2,701,216	1,642,413
Unaffiliated activity
Effects of Reinsurance [Line Items]
Deferred policy acquisition costs	(484,730)	0
Other assets	1,034,000	497,050
Policyholders’ account balances	2,782,114	0
Future policy benefits	0	9
Other Liabilities	$ 820,185	$ 467,203