Investments (Credit Losses Recognized In Earnings on Fixed Maturity Securities Held by the Company) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 2,008	$ 4,769
Additions to allowance for credit losses not previously recorded	39,605	4,268
Reductions for securities sold during the period	(2,002)	(5,120)
Addition (reductions) on securities with previous allowance	324	431
Write-downs charged against the allowance		(2,340)
Assets transferred to parent and affiliates	479
Balance, end of period	40,414	2,008
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
Additions to allowance for credit losses not previously recorded	0	0
Reductions for securities sold during the period	0	0
Addition (reductions) on securities with previous allowance	0	0
Write-downs charged against the allowance		0
Assets transferred to parent and affiliates	0
Balance, end of period	0	0
Foreign government securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
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)
Addition (reductions) on securities with previous allowance	0	(4)
Write-downs charged against the allowance		0
Assets transferred to parent and affiliates	0
Balance, end of period	0	0
U.S. and Foreign Corporate Securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	2,000	4,755
Additions to allowance for credit losses not previously recorded	39,600	4,267
Reductions for securities sold during the period	(2,002)	(5,118)
Addition (reductions) on securities with previous allowance	337	436
Write-downs charged against the allowance		(2,340)
Assets transferred to parent and affiliates	479
Balance, end of period	40,414	2,000
Asset-backed securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	1	0
Additions to allowance for credit losses not previously recorded	0	1
Reductions for securities sold during the period	0	0
Addition (reductions) on securities with previous allowance	(1)	0
Write-downs charged against the allowance		0
Assets transferred to parent and affiliates	0
Balance, end of period	0	1
Commercial mortgage-backed securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
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
Addition (reductions) on securities with previous allowance	0	0
Write-downs charged against the allowance		0
Assets transferred to parent and affiliates	0
Balance, end of period	0	0
Residential mortgage-backed securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	7	9
Additions to allowance for credit losses not previously recorded	5	0
Reductions for securities sold during the period	0	(1)
Addition (reductions) on securities with previous allowance	(12)	(1)
Write-downs charged against the allowance		0
Assets transferred to parent and affiliates	0
Balance, end of period	$ 0	$ 7