Income Taxes (Schedule of Effective Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Tax provision based on the federal statutory rate	21.00%	35.00%	35.00%
Increase in valuation allowances	(34.80%)	48.80%	(58.50%)
Global intangible low-taxed income inclusion	(6.60%)	0.00%	0.00%
One-Time transition tax	(2.80%)	(16.50%)	0.00%
Nondeductible expenses	(2.30%)	(3.30%)	(1.10%)
Taxes related to distributions	(2.30%)	0.00%	0.00%
Foreign income tax rate differential	(1.50%)	0.00%	3.10%
Deemed income related to foreign operations	(1.50%)	(4.10%)	(8.40%)
Foreign tax rate change	(1.40%)	2.20%	0.00%
Employee share-based payments	(0.10%)	13.20%	(0.00%)
Other	0.60%	2.90%	1.70%
Deferred tax adjustments	0.90%	(1.10%)	13.00%
State taxes, net of federal benefit, before valuation allowance	2.40%	1.00%	3.90%
Return to provision adjustments	2.70%	2.00%	18.80%
Foreign tax credits related to above	(0.00%)	(0.00%)	6.50%
Other tax credits	5.10%	(0.00%)	(0.00%)
U.S. Tax Cuts and Jobs Act - rate change adjustment	6.40%	(65.90%)	0.00%
Uncertain tax positions and audit settlements	9.40%	(1.40%)	(25.10%)
Foreign exchange loss	0.00%	0.00%	9.40%
Impairment of definite lived intangibles	0.00%	0.00%	3.10%
Effective tax rate	(4.60%)	(13.60%)	1.40%