Employee Benefit Plans (Weighted-Average Assumptions) (Details)	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012
Pension Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Cost for Plan Year	7.75%	8.00%
Benefit Obligation at End of Plan Year	7.50%	7.75%
Benefit Cost for Plan Year	3.75%	4.75%
Benefit Obligation at End of Plan Year	4.75%	3.75%
Salary Scale Inflation	3.75%	3.75%
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Cost for Plan Year	3.20%	4.25%
Benefit Obligation at End of Plan Year	4.25%	3.20%