Company-Sponsored Employee Benefit Plans (Details) (USD $)	3 Months Ended
	Sep. 29, 2012	Oct. 01, 2011
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 17,780,000	$ 27,055,000
Interest cost	37,700,000	36,879,000
Expected return on plan assets	(42,801,000)	(40,401,000)
Amortization of prior service cost	1,461,000	1,201,000
Amortization of actuarial loss (gain)	19,022,000	15,041,000
Amortization of transition obligation	0	0
Net pension costs / Net other postretirement benefit costs	33,162,000	39,775,000
Employer contributions	5,600,000	5,700,000
Other Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	135,000	114,000
Interest cost	154,000	158,000
Expected return on plan assets	0	0
Amortization of prior service cost	42,000	54,000
Amortization of actuarial loss (gain)	(51,000)	(83,000)
Amortization of transition obligation	35,000	38,000
Net pension costs / Net other postretirement benefit costs	$ 315,000	$ 281,000