Summary of Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) segment	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Summary of Significant Accounting Policies
Number of reportable business segments \| segment	2
Goodwill impairment	$ 0
Impairment of intangible assets	$ 0	$ 0	$ 0
Revenue Recognition
Percentage of net sales attributable to broadband communication market (as a percent)	6.00%
Stock-Based Compensation
Expense incurred for stock-based compensation plans	$ 44,200	41,400	36,100
Expense incurred for stock-based compensation plans, net of tax	$ 32,900	$ 30,300	$ 26,400
Weighted-average assumptions:
Risk free interest rate (as a percent)	1.40%	1.60%	0.90%
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)	17.00%	21.00%	28.00%
Expected dividend yield (as a percent)	1.00%	1.00%	1.00%
Income tax
Undistributed earnings of foreign affiliated companies	$ 3,699,000
Research and Development
Research and development expenses for the creation of new and improved products and processes	$ 124,700	$ 114,800	$ 103,400

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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