Retirement Plans (Schedule Of Future Cash Flows) (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 29, 2013	Jul. 07, 2013
Defined Benefit Plan Disclosure [Line Items]
Minimum required contribution for retirement plans		$ 0
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net year-to-date contributions		12,850,000
Remaining estimated net contributions during fiscal 2012	10,600,000
Postretirement Healthcare Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net year-to-date contributions		889,000
Remaining estimated net contributions during fiscal 2012	$ 551,000