Employee Benefit Plans (Weighted-Average Assumptions) (Details)	12 Months Ended
	Dec. 25, 2015	Dec. 26, 2014
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Cost for Plan Year	7.25%	7.50%
Benefit Obligation at End of Plan Year	7.00%	7.25%
Benefit Cost for Plan Year	4.00%	4.75%
Benefit Obligation at End of Plan Year	4.30%	4.00%
Salary Scale Inflation	4.60%	4.10%
Post-retirement Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Cost for Plan Year	3.60%	4.25%
Benefit Obligation at End of Plan Year	3.85%	3.60%