Income Taxes and Distributions (Schedule of Reconciliation Income Tax Expense (Benefit) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax at statutory rate on earnings from continuing operations before unconsolidated entities, noncontrolling interests and income taxes	$ 280,005,000	$ 176,069,000	$ 199,588,000
Increase (decrease) in valuation allowance	3,465,000	28,309,000	30,445,000
Tax at statutory rate on earnings not subject to federal income taxes	(311,224,000)	(206,937,000)	(234,468,000)
Foreign permanent depreciation	9,260,000	8,110,000	10,065,000
Other differences	21,451,000	3,123,000	14,498,000
Totals	$ 2,957,000	$ 8,674,000	$ 20,128,000