Employee Benefit Plans (Weighted Average Assumptions Used To Determine Benefit Obligations) (Details)	12 Months Ended
Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Discount rate in benefit obligations	3.53%	4.77%
Expected rate of increase in future compensation levels	2.52%	2.52%
Discount rate	4.77%	5.27%	5.77%
Expected rate of return on plan assets	5.25%	5.75%	4.00%
Expected rate of increase in future compensation levels	2.52%	2.52%	2.52%
Measurement Date	December 31, 2012	December 31, 2011	December 31, 2010

The measurement date for determining rate assumptions used in calculating the net periodic benefit cost (such as the weighted-average expected long-term rate of return on plan assets and the discount rate) is normally the beginning of the year measurement date. If an assumed rate(s) changes due to a subsequent interim measurement of both plan assets and obligations, disclosure of the beginning and more recently assumed rate(s), or a properly weighted combination of the two. Disclosure may include the more recent measurement date.

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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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