Employee Benefit Plans (Target Allocation And Actual Allocation Percentage By Asset Category) (Details)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	100.00%
Allocation Percentage	100.00%	100.00%
Domestic Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	30.00%
Allocation Percentage	29.70%	32.30%
International Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	10.00%
Allocation Percentage	10.50%	7.90%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	40.00%
Allocation Percentage	40.20%	40.40%
All Asset Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	20.00%
Allocation Percentage	19.70%	19.40%
Cash/Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	0.00%
Allocation Percentage	0.00%	0.00%