Pension and Postretirement Benefits (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 01, 2012	Mar. 27, 2011	Apr. 01, 2012	Mar. 27, 2011
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	$ 3,443	$ 3,367	$ 10,328	$ 10,143
Interest Cost on Projected Benefits	14,317	14,172	42,952	42,517
Expected Return on Plan Assets	(19,174)	(19,244)	(57,522)	(57,731)
Amortization of Transition Obligation	2	2	6	6
Amortization of Prior Service Cost (Credit)	725	765	2,174	2,294
Amortization of Actuarial Loss	4,623	4,443	13,870	13,328
Net Periodic Expense	3,936	3,505	11,808	10,557
Other Postretirement Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	102	121	307	364
Interest Cost on Projected Benefits	1,687	1,787	5,062	5,333
Expected Return on Plan Assets	0	0	0	0
Amortization of Transition Obligation	0	0	0	0
Amortization of Prior Service Cost (Credit)	(959)	(872)	(2,877)	(2,611)
Amortization of Actuarial Loss	2,295	2,566	6,884	7,707
Net Periodic Expense	$ 3,125	$ 3,602	$ 9,376	$ 10,793