Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
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%	1.90%	1.10%	4.40%
Taxes on foreign earnings	(8.70%)	(7.20%)	(8.50%)	(8.40%)
Credits and net operating loss utilization	(0.70%)	(3.50%)	(0.90%)	(3.40%)
Purchased intangible assets	1.20%	1.80%	1.30%	1.50%
Manufacturing deduction	(1.70%)	(2.40%)	(1.80%)	(11.10%)
Permanent items	0.40%	(1.00%)	0.40%	1.80%
Other	0.40%	(0.20%)	0.30%	(0.20%)
Effective tax rate	27.00%	24.40%	26.90%	19.60%