Investments - Schedule of Commercial Loan Participations, Allowance for Credit Loss (Details) - Commercial mortgage loan participations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses beginning balance	$ 3,069	$ 827	$ 1,789	$ 827
Provision (reversal) for credit losses	(141)	282	1,139	282
Allowance for credit losses ending balance	$ 2,928	$ 1,109	$ 2,928	$ 1,109