Equity-Based Compensation (Summary Of Stock Option Activity) (Details) (Stock Option [Member], USD $)	9 Months Ended
Oct. 01, 2011
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding at beginning of year	2,340,959
Shares, Granted	0
Shares, Exercised	(370,612)
Shares, Forfeited	(61,813)
Shares, Expired	(57,683)
Shares, Outstanding at end of period	1,850,851
Shares, Exercisable at end of period	1,730,494
Weighted-Average Exercise Price, Outstanding at beginning of year	$ 37.36
Weighted-Average Exercise Price, Granted	$ 0.00
Weighted-Average Exercise Price, Exercised	$ 25.88
Weighted-Average Exercise Price, Forfeited	$ 32.62
Weighted-Average Exercise Price, Expired	$ 40.07
Weighted-Average Exercise Price, Outstanding at end of period	$ 39.69
Weighted-Average Exercise Price, Exercisable at end of period	$ 40.08
Intrinsic value of exercised options	$ 5,079,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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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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The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

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The decrease in the number of shares that could be issued attributable to the lapse of rights to exercise previously issued stock options under the terms of the option agreements under the plan during the reporting period.

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The weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that lapsed during the reporting period.

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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.

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The weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated during the reporting period due to noncompliance with plan terms during the reporting period.

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

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