Company-Sponsored Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 26, 2015	Sep. 27, 2014
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2,902	$ 2,815
Interest cost	42,833	42,779
Expected return on plan assets	(53,203)	(57,156)
Amortization of prior service cost	2,743	2,777
Amortization of actuarial loss (gain)	5,435	4,968
Net periodic costs (benefits)	710	(3,817)
Employer contributions	37,000	56,100
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	134	134
Interest cost	153	148
Expected return on plan assets	0	0
Amortization of prior service cost	41	42
Amortization of actuarial loss (gain)	(118)	(109)
Net periodic costs (benefits)	$ 210	$ 215