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Employee Benefit Plans (Schedule Of Assumptions Used In Calculating Funded Status) (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Employee Benefit Plans [Abstract]
Long-term rate of return on plan assets	6.00%	6.77%	6.89%
Discount rate	4.70%	5.40%	5.70%
Salary increases
Inflation	3.00%	3.40%	3.80%

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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