Stock-Based Compensation (Schedule Of Stock Option Plans Activity) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
Sep. 29, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding at beginning of year, Shares	1,156
Granted, Shares	754
Exercised, Shares	(354)
Canceled, Shares
Outstanding at end of period, 2012, Shares	1,556
Options exercisable at end of period, Shares
Outstanding at beginning of year, Weighted - Average Exercise Price	$ 38.26
Granted, Weighted - Average Exercise Price	$ 35.76
Exercised, Weighted - Average Exercise Price	$ 29.67
Canceled, Weighted - Average Exercise Price
Outstanding at end of period, Weighted - Average Exercise Price	$ 39.01
Outstanding at end of period, Weighted - Average Remaining Contractual Life, years	9 years
Exercised, Aggregate Intrinsic Value	$ 4,272
Outstanding at end of period, Aggregate Intrinsic Value	$ 1,886

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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-Name Accounting Standards Codification

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the 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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Net number of share options (or share units) granted during the period.

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

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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Number of share options (or share units) exercised during the current period.

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