Income Taxes (Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023		Dec. 31, 2022
Current tax expense (benefit):
U.S. federal	$ 151,544	$ 698,170		$ (345,263)
State and local	5,763	14,550		4,479
Total	157,307	712,720		(340,784)
Deferred tax expense (benefit):
U.S. federal	(22,612)	(686,252)		44,097
State and local	454	0		0
Total	(22,158)	(686,252)		44,097
Income tax expense (benefit)	135,149	26,468	[1]	(296,687)	[1]
Income tax expense (benefit) on equity in earnings of operating joint ventures	24	(109)		(193)
Income tax expense (benefit) reported in equity related to:
Other comprehensive income (loss)	(151,234)	(5,638)		(106,197)
Total income tax expense (benefit)	$ (16,061)	$ 20,721		$ (403,077)

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