Company-Sponsored Employee Benefit Plans (Details) (USD $)	3 Months Ended
	Sep. 28, 2013	Sep. 29, 2012
Pension Benefits [Member]
Service cost	$ 2,414,000	$ 17,780,000
Interest cost	40,109,000	37,700,000
Expected return on plan assets	(48,199,000)	(42,801,000)
Amortization of prior service cost	2,786,000	1,461,000
Amortization of actuarial loss (gain)	4,082,000	19,022,000
Amortization of transition obligation	0	0
Net pension costs/ Net other postretirement benefit costs	1,192,000	33,162,000
Employer contributions	5,800,000	5,600,000
Other Postretirement Plans [Member]
Service cost	136,000	135,000
Interest cost	187,000	154,000
Expected return on plan assets	0	0
Amortization of prior service cost	42,000	42,000
Amortization of actuarial loss (gain)	(36,000)	(51,000)
Amortization of transition obligation	0	35,000
Net pension costs/ Net other postretirement benefit costs	$ 329,000	$ 315,000