Company-Sponsored Employee Benefit Plans (Assumptions) (Details)	12 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 29, 2013
Retirement Plan
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.84%	4.74%
Rate of compensation increase	3.89%	3.89%
Weighted-average assumptions used in calculating net periodic benefit cost
Discount rate	4.74%	5.32%	4.81%
Expected rate of return	7.75%	7.75%	7.75%
Rate of compensation increase	3.89%	3.89%	5.30%
Discount rate used to calculate next year benefit costs	4.84%
Expected rate of return on plan assets used in calculating net periodic benefit cost for next fiscal year	7.25%
Supplemental executive retirement plan
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.63%	4.59%
Weighted-average assumptions used in calculating net periodic benefit cost
Discount rate	4.59%	4.94%	3.96%
Description of annual salary growth assumption used in calculating benefit obligation	As benefit accruals under the SERP were frozen as of June 29, 2013, due to the plan freeze discussed above, future pay is not projected in the determination of the benefit obligation as of June 27, 2015 or June 28, 2014.
Description of annual salary growth assumption used in calculating net periodic benefit cost	As benefit accruals under the SERP were frozen as of June 29, 2013, due to the plan freeze discussed above, future pay is not projected in the determination of net pension costs related to the SERP for fiscal 2015 and fiscal 2014.  For determining the net pension costs related to the SERP for fiscal 2013, the SERP calculations utilized an age-graded salary growth assumption.
Discount rate used to calculate next year benefit costs	4.63%
Other Postretirement Plans
Weighted-average assumptions used to determine benefit obligations
Discount rate	4.84%	4.74%
Weighted-average assumptions used in calculating net periodic benefit cost
Discount rate	4.74%	5.32%	4.81%
Discount rate used to calculate next year benefit costs	4.84%