PENSION AND OTHER POSTRETIREMENT BENEFITS - Assumptions to Determine Projected Benefit Obligations and Net Periodic Cost (Details)	12 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jul. 03, 2015
Pension
Obligation assumptions as of:
Discount rate	3.76%	3.62%
Rate of future compensation increase	2.76%	2.75%
Cost assumptions for fiscal years:
Discount rate to determine service cost	3.80%	4.06%	3.77%
Discount rate to determine interest cost	2.94%	4.06%	3.77%
Expected return on plan assets	7.65%	7.91%	7.93%
Rate of future compensation increase	2.75%	2.76%	2.76%
Other Benefits
Obligation assumptions as of:
Discount rate	3.63%	3.41%
Cost assumptions for fiscal years:
Discount rate to determine service cost	3.52%	3.86%	3.57%
Discount rate to determine interest cost	2.60%	3.86%	3.57%
Rate of future compensation increase		2.75%	2.75%