Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Apr. 02, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of anniversaries of grant date upon which restricted stock units vest	3
Stock options exercise prices as percentage of the market value on the date of the grant	100.00%
Compensation expense for stock options	$ 0.3	$ 0.3
Exercise of stock options total	5.9
Stock Options Granted Prior To 2006 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vesting period	six months
Stock options term, years	7
Stock Options Granted In 2010 And 2011 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vesting period	three years
Stock options term, years	10
RSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments in which restricted stock units vest and are converted to common stock	3
Compensation expense	4.8	7.5
Unrecognized compensation expense related to unvested restricted stock	19.2
Weighted-average recognition period for unrecognized compensation expense related to unvested restricted stock (years)	1.4
AIP And LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	1.7	2.4
Unrecognized compensation expense related to unvested restricted stock	1.1
Weighted-average recognition period for unrecognized compensation expense related to unvested restricted stock (years)	1.9
AIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of annual incentive award payment participant can elect to defer.	50.00%
Additional common stock units for election of deferred annual incentive award, percentage	25.00%
LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Portion of restricted stock award vesting on anniversary	0.333
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to unvested restricted stock	$ 1.5
Weighted-average recognition period for unrecognized compensation expense related to unvested restricted stock (years)	1.2

Additional common stock units for election of deferred annual incentive award, percentage

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Amount of annual incentive award payment participant can elect to defer.

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Fraction Of Restricted Stock Award Vesting On Anniversary

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Installments in which restricted stock units vest and are converted to common stock.

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Number Of Anniversaries Of Grant Date Upon Which Restricted Stock Units Vest

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- Definition

Stock Option Exercise Price As Percentage Of Market Value

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The period in which a stock option can be exercised.

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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- Definition

The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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- Definition

Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

+ References

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- Definition

Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

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- Definition

The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

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