Retirement Plans (Schedule Of Future Cash Flows) (Details) (USD $)	4 Months Ended	9 Months Ended
	Jan. 18, 2015	Sep. 27, 2015
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	6,453,000
Remaining estimated net contributions during fiscal 2012		18,000,000
Postretirement Healthcare Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net year-to-date contributions	427,000
Remaining estimated net contributions during fiscal 2012		$ 800,000