Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 1,650	$ 3,727	$ 2,008	$ 4,769
Additions to allowance for credit losses not previously recorded	344	242	401	3,165
Reductions for securities sold during the period	(1)	(41)	(42)	(3,775)
Additions (reductions) on securities with previous allowance	1,355	995	502	764
Assets transferred to parent and affiliates	0		479
Balance, end of period	3,348	4,923	3,348	4,923
U.S. Treasury securities and obligations of U.S. government authorities and agencies
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	0	0	0	0
Additions to allowance for credit losses not previously recorded	0	0	0	0
Reductions for securities sold during the period	0	0	0	0
Additions (reductions) on securities with previous allowance	0	0	0	0
Assets transferred to parent and affiliates	0		0
Balance, end of period	0	0	0	0
Foreign Government Bonds
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	0	0	0	5
Additions to allowance for credit losses not previously recorded	0	0	0	0
Reductions for securities sold during the period	0	0	0	(1)
Additions (reductions) on securities with previous allowance	0	0	0	(4)
Assets transferred to parent and affiliates	0		0
Balance, end of period	0	0	0	0
U.S. and Foreign Corporate Securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	1,650	3,720	2,000	4,755
Additions to allowance for credit losses not previously recorded	339	242	396	3,165
Reductions for securities sold during the period	(1)	(41)	(42)	(3,774)
Additions (reductions) on securities with previous allowance	1,355	996	510	771
Assets transferred to parent and affiliates	0		479
Balance, end of period	3,343	4,917	3,343	4,917
Asset-backed securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	0	0	1	0
Additions to allowance for credit losses not previously recorded	0	0	0	0
Reductions for securities sold during the period	0	0	0	0
Additions (reductions) on securities with previous allowance	0	0	(1)	0
Assets transferred to parent and affiliates	0		0
Balance, end of period	0	0	0	0
Commercial mortgage-backed securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	0	0	0	0
Additions to allowance for credit losses not previously recorded	0	0	0	0
Reductions for securities sold during the period	0	0	0	0
Additions (reductions) on securities with previous allowance	0	0	0	0
Assets transferred to parent and affiliates	0		0
Balance, end of period	0	0	0	0
Residential Mortgage-Backed Securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	0	7	7	9
Additions to allowance for credit losses not previously recorded	5	0	5	0
Reductions for securities sold during the period	0	0	0	0
Additions (reductions) on securities with previous allowance	0	(1)	(7)	(3)
Assets transferred to parent and affiliates	0		0
Balance, end of period	$ 5	$ 6	$ 5	$ 6