Income Taxes (Schedule of Effective Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Tax provision based on the federal statutory rate	21.00%	21.00%	21.00%
Increase in valuation allowances	(8.50%)	(21.30%)	(34.80%)
Dividends Not Taxable	9.50%	0.00%	0.00%
Net Operating Loss Carryback Claim	6.20%	0.00%	0.00%
Change in Carryforward Attributes	(3.20%)	0.00%	0.00%
Global intangible low-taxed income inclusion	(0.30%)	(7.00%)	(6.60%)
One-Time transition tax	0	0	(0.028)
Nondeductible expenses	(13.50%)	(1.80%)	(2.30%)
Taxes related to distributions	0.00%	(0.80%)	(2.30%)
Foreign income tax rate differential	(3.30%)	1.00%	(1.50%)
Deemed income related to foreign operations	(1.60%)	(0.50%)	(1.50%)
Tax rate change	(0.30%)	(1.10%)	(1.40%)
Employee share-based payments	(1.40%)	0.00%	0.10%
Other	(0.40%)	(0.90%)	0.60%
Deferred and payable adjustments	(2.60%)	3.30%	0.90%
ASU 842 Adoption	0.00%	(0.10%)	0.00%
State taxes, net of federal benefit, before valuation allowance	0.50%	2.80%	2.40%
Return to provision adjustments	0.90%	(2.50%)	2.70%
Other tax credits	0.20%	(1.90%)	5.10%
U.S. Tax Cuts and Jobs Act - rate change adjustment	0	0	0.064
Uncertain tax positions and audit settlements	(7.50%)	2.80%	9.40%
Effective tax rate	(4.30%)	(7.00%)	(4.60%)