Taxes On Income From Continuing Operations (Schedule Of Effective Income Tax Rate) (Details) (USD $)	3 Months Ended
Apr. 01, 2012	Mar. 27, 2011
Taxes On Income From Continuing Operations [Abstract]
Effective income tax rate	1.40%	25.80%
Goodwill impairment	$ 332,128,000
Goodwill, tax deductible amount	$ 45,000,000

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

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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