Restructuring And Asset Impairments (Restructuring, Asset Impairment And Intangible Asset Impairment Charges) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2011	Apr. 03, 2010	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Restructuring And Asset Impairments [Abstract]
Restructuring		$ (0.5)		$ (0.5)	$ 1.5
Asset impairments	0.6		0.6		3.6
Intangible asset impairments			1.4
Restructuring, goodwill impairment and asset impairment charges (gains)			$ 2.0	$ (0.5)	$ 5.1

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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