Deferred Policy Acquisition Costs, Deferred Reinsurance Losses, Deferred Reinsurance Gains And Deferred Sales Inducements (Balance of and Changes in Deferred Reinsurance Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 255,113	$ 292,892
Amortization expense	(9,011)	(9,990)
Other	1
Balance, end of period	246,103	282,902
Variable Annuities
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	194,110	223,515
Amortization expense	(7,040)	(7,828)
Other	1
Balance, end of period	187,071	215,687
Term Life
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	61,003	69,377
Amortization expense	(1,971)	(2,162)
Other	0
Balance, end of period	$ 59,032	$ 67,215