Deferred Policy Acquisition Costs, Deferred Reinsurance, and Deferred Sales Inducements (DRG) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Reinsurance Recoverable, Allowance for Credit Gain [Roll Forward]
Balance, beginning of period	$ 3,318,785	$ 1,673,290
Amortization expense	(123,938)	(110,041)
Other	13,933	1,092,415
Foreign currency adjustment	283
Balance, end of period	3,209,063	2,655,664
Fixed Annuities
Reinsurance Recoverable, Allowance for Credit Gain [Roll Forward]
Balance, beginning of period	37,548	48,073
Amortization expense	(7,260)	(8,109)
Other	159	118
Foreign currency adjustment	0
Balance, end of period	30,447	40,082
Variable Annuities
Reinsurance Recoverable, Allowance for Credit Gain [Roll Forward]
Balance, beginning of period	241,628	261,721
Amortization expense	(14,595)	(15,237)
Other	76	98
Foreign currency adjustment	0
Balance, end of period	227,109	246,582
Variable/Universal Life
Reinsurance Recoverable, Allowance for Credit Gain [Roll Forward]
Balance, beginning of period	3,039,609	1,363,496
Amortization expense	(101,539)	(86,695)
Other	0	1,092,199
Foreign currency adjustment	0
Balance, end of period	2,938,070	2,369,000
Variable/Universal Life | Somerset Re
Reinsurance Recoverable, Allowance for Credit Gain [Roll Forward]
Other	1,207,000
Variable/Universal Life | PURC
Reinsurance Recoverable, Allowance for Credit Gain [Roll Forward]
Other	116,000
International
Reinsurance Recoverable, Allowance for Credit Gain [Roll Forward]
Balance, beginning of period	0	0
Amortization expense	(544)	0
Other	13,698	0
Foreign currency adjustment	283
Balance, end of period	13,437	$ 0
International | Prudential of Japan
Reinsurance Recoverable, Allowance for Credit Gain [Roll Forward]
Balance, end of period	$ 14,000