PENSION PLANS - Net Periodic Pension Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 25, 2015	Jul. 26, 2014	Jul. 27, 2013
Compensation Related Costs [Abstract]
Service cost	$ 3,642	$ 2,926	$ 3,279
Interest cost on projected benefit obligation	3,055	2,775	2,479
Expected return on plan assets	(3,719)	(3,194)	(2,706)
Gain on settlement	(239)	0	0
Amortization of gains and losses	1,295	804	2,173
Amortization of prior service costs	0	0	8
Net periodic pension cost	$ 4,034	$ 3,311	$ 5,233