Investments - Schedule of Fixed Maturities, Allowance for Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses beginning balance			$ 0
Allowance for credit losses ending balance	$ 72,508		72,508
Fixed maturities available for sale
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses beginning balance			0
Allowance for credit losses ending balance	72,508		72,508
Corporates | Fixed maturities available for sale
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses beginning balance	32,767	$ 0	0	$ 387
Additions to allowance for which credit losses were not previously recorded	38,228	0	72,508	0
Additions (reductions) to allowance for fixed maturities that previously had an allowance	1,513	0	0	0
Reduction of allowance for which the Company intends to sell or more likely than not will be required to sell or sold during the period	0	0	0	(387)
Allowance for credit losses ending balance	$ 72,508	$ 0	$ 72,508	$ 0