Investments (Equity Method Investments, Statement of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments [Abstract]
Total Revenue	$ 11,031,051	$ 565,409	$ 819,904
Total Expenses	(2,044,942)	(201,644)	(200,666)
Net earnings (losses)	8,986,109	363,765	619,238
Earnings in net earnings (losses) included above	62,173	8,644	24,971
Equity in net earnings (losses) of LP/LLC interests not included above	28,765	25,859	5,077
Net income (loss)	$ 90,938	$ 34,503	$ 30,048