REVENUE RECOGNITION - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Aug. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract assets	$ 21,500	$ 24,000
Deferred revenue current	2,900	3,700
Deferred revenue long-term	100	200
Accumulated deficit	(7,426,287)	(7,363,569)	$ (7,357,431)
Total net revenue	819,830	$ 645,258
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accumulated deficit	6,888		$ 6,138
Total net revenue	$ 1,696