Income Taxes (Effective Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Statutory federal rate	21.00%	35.00%	35.00%
State and local taxes, net of federal tax benefit	2.20%	0.20%	0.60%
U.S. Tax Reform	0.00%	(24.70%)	0.00%
Tax on foreign income	(16.20%)	6.00%	(24.40%)
Tax on uncertain tax positions - Brazil	67.40%	0.00%	0.00%
Tax on uncertain tax positions - Rest of World	8.50%	(3.60%)	34.10%
Reorganizations	(91.30%)	0.00%	(93.60%)
Net change in valuation allowances	128.30%	62.40%	375.10%
Venezuela deconsolidation, devaluation and highly inflationary accounting	0.00%	0.00%	23.90%
Imputed royalties and associated non-deductible expenses	0.60%	9.50%	50.30%
Research credits	(1.30%)	(1.30%)	(5.40%)
Other	1.00%	(0.10%)	3.80%
Effective tax rate	120.20%	83.40%	399.40%