Deferred Policy Acquisition Costs, Deferred Reinsurance, and Deferred Sales Inducements (DRL) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 1,530,394	$ 255,113
Amortization expense	(26,622)	(9,011)
Other	(2)	1
Balance, end of period	1,503,770	246,103
Variable Annuities
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	164,238	194,110
Amortization expense	(7,668)	(7,040)
Other	(2)	1
Balance, end of period	156,568	187,071
Term Life
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	396,684	61,003
Amortization expense	(9,458)	(1,971)
Other	0	0
Balance, end of period	387,226	59,032
Variable/Universal Life
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	969,472	0
Amortization expense	(9,496)	0
Other	0	0
Balance, end of period	$ 959,976	$ 0