Investments (Equity Method Investments, Statement of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments [Abstract]
Total Revenue	$ 1,678,772	$ 3,465,807	$ 11,062,060
Total Expenses	(473,445)	(979,287)	(1,655,673)
Net earnings (losses)	1,205,327	2,486,520	9,406,387
Earnings in net earnings (losses) included above	57,119	17,795	(36,513)
Equity in net earnings (losses) of LP/LLC interests not included above	18,193	11,792	7,320
Total equity in net earnings (losses)	$ 75,312	$ 29,587	$ (29,193)