Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 item	Dec. 31, 2012	Dec. 31, 2011
Summary of Significant Accounting Policies
Number of reportable business segments	2
Revenue Recognition
Percentage of consolidated sales attributable to broadband communication market (as a percent)	8.00%
Stock Options
Expense incurred for stock-based compensation plans (in dollars)	$ 36,070	$ 31,412	$ 28,679
Expense incurred for stock-based compensation plans, net of tax (in dollars)	26,406	22,709	20,720
Weighted-average assumptions:
Risk free interest rate (as a percent)	0.90%	0.80%	1.70%
Expected life	4 years 7 months 6 days	4 years 7 months 6 days	4 years 7 months 6 days
Expected volatility (as a percent)	28.00%	30.00%	28.00%
Expected dividend yield (as a percent)	1.00%	0.80%	0.10%
Income tax
Undistributed earnings of foreign affiliated companies	2,600,000
Research and Development
Research and development expenses for the creation of new and improved products and processes	$ 103,421	$ 92,480	$ 88,877