Employee Benefit Costs (Schedule of Income and Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jul. 01, 2012
Net Curtailment Loss		$ 1,914	$ (700)
Pension Benefits [Member]
Service Cost-Benefits Earned During the Year	7,645	13,222	13,764
Interest Cost on Projected Benefit Obligation	53,743	50,154	56,762
Expected Return on Plan Assets	(74,152)	(75,832)	(76,445)
Amortization of Transition Obligation	0	7	8
Amortization of Prior Service Cost (Credit)	180	366	2,856
Amortization of Actuarial Loss	25,105	34,821	20,230
Net Curtailment Loss	0
Net Periodic Expense	12,521	24,652	17,550
Other Postretirement Benefits [Member]
Service Cost-Benefits Earned During the Year	333	358	407
Interest Cost on Projected Benefit Obligation	4,565	4,754	6,468
Expected Return on Plan Assets	0	0	0
Amortization of Transition Obligation	0	0	0
Amortization of Prior Service Cost (Credit)	(2,895)	(3,589)	(3,800)
Amortization of Actuarial Loss	5,527	7,624	8,942
Net Curtailment Loss	0	0	359
Net Periodic Expense	$ 7,530	$ 9,147	$ 12,376