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Stock Based Compensation Plans (Narrative) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011	Jul. 02, 2010
Stock compensation expense	$ 5.9	$ 6.1	$ 7.5	$ 7.7
Restricted Stock [Member]
Stock compensation expense	$ 0	$ 0.1	$ 0.2	$ 0.2

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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