Income Taxes (Reconciliation To Effective Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023		Dec. 31, 2022
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%		21.00%
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Expected federal income tax expense (benefit)	$ 204,342	$ 100,305		$ (208,444)
Non-taxable investment income	(42,621)	(42,730)		(46,426)
Tax credits	(29,001)	(42,578)		(47,544)
State and Local Income Tax Expense (Benefit)	4,911	11,495		3,538
Other	(2,482)	(24)		2,189
Total income tax expense (benefit) on income (loss) before equity in earnings of operating joint ventures	$ 135,149	$ 26,468	[1]	$ (296,687)	[1]
Effective tax rate	13.90%	5.50%		29.90%

[1] Amounts reflect revision to prior period Financial Statements. See Note 17 for additional information.