Deferred Policy Acquisition Costs, Deferred Reinsurance, and Deferred Sales Inducements (DRL) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 1,530,394	$ 255,113
Amortization expense	(78,581)	(27,958)
Other	4	10
Balance, end of period	1,451,817	227,165
Variable Annuities
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	164,238	194,110
Amortization expense	(22,404)	(22,230)
Other	4	10
Balance, end of period	141,838	171,890
Term Life
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	396,684	61,003
Amortization expense	(27,805)	(5,728)
Other	0	0
Balance, end of period	368,879	55,275
Variable/Universal Life
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	969,472	0
Amortization expense	(28,372)	0
Other	0	0
Balance, end of period	$ 941,100	$ 0