Income Taxes (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reconciliation between the U.S. federal statutory tax rate and effective tax rate
Statutory rate	35.00%	35.00%	35.00%	35.00%
State taxes	1.10%	1.20%	1.00%	0.50%
Taxes on foreign earnings	(10.10%)	(10.70%)	(9.40%)	(10.10%)
Credits and net operating loss utilization	(1.40%)	(1.10%)	(1.30%)	(0.90%)
Purchased intangible assets	1.20%	1.50%	1.10%	1.20%
Manufacturing deduction	(1.80%)	(2.10%)	(1.70%)	(2.00%)
Permanent items	0.20%	0.50%	0.50%	0.60%
Other	0.50%	0.00%	0.40%	0.30%
Effective tax rate	24.70%	24.30%	25.60%	24.60%