Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) - Available-for-sale - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Balance, beginning of period	$ 2,008	$ 4,769
Additions to allowance for credit losses not previously recorded	57	2,923
Reductions for securities sold during the period	(41)	(3,734)
Additions (reductions) on securities with previous allowance	(853)	(231)
Assets transferred to parent and affiliates	479
Balance, end of period	1,650	3,727
U.S. Treasury securities and obligations of U.S. government authorities and agencies
Debt Securities, Available-for-sale [Line Items]
Balance, beginning of period	0	0
Additions to allowance for credit losses not previously recorded	0	0
Reductions for securities sold during the period	0	0
Additions (reductions) on securities with previous allowance	0	0
Assets transferred to parent and affiliates	0
Balance, end of period	0	0
Foreign Government Bonds
Debt Securities, Available-for-sale [Line Items]
Balance, beginning of period	0	5
Additions to allowance for credit losses not previously recorded	0	0
Reductions for securities sold during the period	0	(1)
Additions (reductions) on securities with previous allowance	0	(4)
Assets transferred to parent and affiliates	0
Balance, end of period	0	0
U.S. and Foreign Corporate Securities
Debt Securities, Available-for-sale [Line Items]
Balance, beginning of period	2,000	4,755
Additions to allowance for credit losses not previously recorded	57	2,923
Reductions for securities sold during the period	(41)	(3,733)
Additions (reductions) on securities with previous allowance	(845)	(225)
Assets transferred to parent and affiliates	479
Balance, end of period	1,650	3,720
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Balance, beginning of period	1	0
Additions to allowance for credit losses not previously recorded	0	0
Reductions for securities sold during the period	0	0
Additions (reductions) on securities with previous allowance	(1)	0
Assets transferred to parent and affiliates	0
Balance, end of period	0	0
Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Balance, beginning of period	0	0
Additions to allowance for credit losses not previously recorded	0	0
Reductions for securities sold during the period	0	0
Additions (reductions) on securities with previous allowance	0	0
Assets transferred to parent and affiliates	0
Balance, end of period	0	0
Residential Mortgage-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Balance, beginning of period	7	9
Additions to allowance for credit losses not previously recorded	0	0
Reductions for securities sold during the period	0	0
Additions (reductions) on securities with previous allowance	(7)	(2)
Assets transferred to parent and affiliates	0
Balance, end of period	$ 0	$ 7