Income Taxes (Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Tax provision at statutory rate based on income before income taxes (percent)	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit (percent)	1.70%	3.20%	1.70%
Impact of repatriation of foreign earnings (percent)	0.00%	2.50%	0.00%
New York State corporate tax reform (percent)	0.00%	0.00%	5.50%
Stock-based compensation (percent)	(0.00%)	(0.00%)	(0.20%)
Foreign income taxes (percent)	(6.80%)	(3.60%)	(4.80%)
Federal research credit (percent)	(5.60%)	(2.00%)	(2.10%)
Settlement of taxing authority examinations (percent)	(3.50%)	(0.60%)	(3.70%)
European permanent deduction (percent)	(3.40%)	(2.10%)	(3.80%)
Non deductible/non-taxable items (percent)	7.20%	1.80%	1.80%
Other, net (percent)	(0.30%)	(1.80%)	1.60%
Effective income tax rate, continuing operations (percent)	24.30%	32.40%	31.00%