PENSION PLANS - Assumptions Used (Details)	12 Months Ended
	Jul. 28, 2018	Jul. 29, 2017
Compensation Related Costs [Abstract]
Assumed discount rate — net periodic pension cost	3.60%	3.08%
Assumed discount rate — benefit obligation	3.99%	3.60%
Assumed rate of increase in compensation levels	4.50%	4.50%
Expected rate of return on plan assets	7.50%	7.50%