Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	12 Months Ended
Oct. 02, 2014	Dec. 31, 2014 item	Dec. 31, 2013	Dec. 31, 2012
Summary of Significant Accounting Policies
Number of reportable business segments		2us-gaap_NumberOfReportableSegments
Revenue Recognition
Percentage of net sales attributable to broadband communication market (as a percent)		7.00%
Stock Options
Expense incurred for stock-based compensation plans (in dollars)		$ 41.4	$ 36.1	$ 31.4
Expense incurred for stock-based compensation plans, net of tax (in dollars)		30.3	26.4	22.7
Weighted-average assumptions:
Risk free interest rate (as a percent)		1.60%	0.90%	0.80%
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)		21.00%	28.00%	30.00%
Expected dividend yield (as a percent)		1.00%	1.00%	0.80%
Income tax
Undistributed earnings of foreign affiliated companies		3,337.0
Research and Development
Research and development expenses for the creation of new and improved products and processes		$ 114.8us-gaap_ResearchAndDevelopmentExpense	$ 103.4us-gaap_ResearchAndDevelopmentExpense	$ 92.5us-gaap_ResearchAndDevelopmentExpense
Net Income per Common Share
Stock split, conversion ratio	2

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This element represents the percentage of consolidated sales that are attributable to the broadband communication market.

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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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The amount of expense, net of income tax, 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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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

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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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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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