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Stock-Based Compensation (Stock Options Activity) (Details) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 29, 2018 USD ($) $ / shares shares
Stock Option Activity (in shares)
Options Outstanding, Beginning | shares	931,353
Granted | shares	28,447
Exercised | shares	(108,305)
Forfeited or expired | shares	(17,542)
Options Outstanding, Ending | shares	833,953
Options Exercisable | shares	701,729
Weighted Average Exercise Price (in dollars per share)
Options Outstanding, Beginning | $ / shares	$ 30.89
Granted | $ / shares	45.13
Exercised | $ / shares	33.47
Forfeited or expired | $ / shares	38.77
Options Outstanding, Ending | $ / shares	30.87
Options Exercisable | $ / shares	$ 29.88
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options Outstanding, Weighted Average Remaining Contractual Term	5 years 5 months
Options Exercisable, Weighted Average Remaining Contractual Term	4 years 10 months
Options Outstanding, Intrinsic Value | $	$ 28.2
Options Exercisable, Intrinsic Value | $	$ 24.4

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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