Stock-Based Compensation (Details 2) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
Jun. 29, 2012 Y
Stock Options Time Based [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock Options Outstanding, Beginning	1,558,771
Option Grants in Period, Gross	377,826
Option Exercises in Period	(13,316)
Option Forfeitures and Expirations in Period	(56,953)
Stock Options Outstanding, Ending	1,866,328
Options Exercisable, Number	1,289,902
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options Outstanding, Weighted Average Exercise Price, Beginning	$ 23.42
Option Grants in Period, Weighted Average Exercise Price	$ 22.18
Option Exercises in Period, Weighted Average Exercise Price	$ 21.44
Option Forfeitures and Expirations in Period, Weighted Average Exercise Price	$ 24.05
Options Outstanding, Weighted Average Exercise Price, Ending	$ 23.17
Options Exercisable, Weighted Average Exercise Price	$ 23.36
Options Outstanding, Weighted Average Remaining Contractual Term	6.4
Options Exercisable, Weighted Average Remaining Contractual Term	5.3
Options Outstanding, Intrinsic Value	$ 2.1
Options Exercisable, Intrinsic Value	1.8
Stock Options Performance Based [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock Options Outstanding, Beginning	478,364
Option Grants in Period, Gross	0
Option Exercises in Period	(5,353)
Option Forfeitures and Expirations in Period	(177,733)
Stock Options Outstanding, Ending	295,278
Options Exercisable, Number	295,278
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options Outstanding, Weighted Average Exercise Price, Beginning	$ 24.44
Option Grants in Period, Weighted Average Exercise Price	$ 0
Option Exercises in Period, Weighted Average Exercise Price	$ 22.11
Option Forfeitures and Expirations in Period, Weighted Average Exercise Price	$ 26.49
Options Outstanding, Weighted Average Exercise Price, Ending	$ 23.25
Options Exercisable, Weighted Average Exercise Price	$ 23.25
Options Outstanding, Weighted Average Remaining Contractual Term	4.8
Options Exercisable, Weighted Average Remaining Contractual Term	4.8
Options Outstanding, Intrinsic Value	0.1
Options Exercisable, Intrinsic Value	$ 0.1

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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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 weighted average period between the balance sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.

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- Definition

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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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.

+ References

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The combined weighted average exercise price associated with stock options during the period that have either lapsed or been forfeited.

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

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No definition available.

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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 stock options awarded under the plan during the reporting period.

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to options outstanding under the plan as of the balance sheet date.

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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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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

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

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