Stock-Based Compensation Expense and Shareholders' Equity (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	$ 91,570	$ 89,176	$ 72,695
Net impact of deferred stock-based compensation	(54)	438	(901)
Total stock-based compensation expense	91,516	89,614	71,794
Stock-based compensation expense
Total stock-based compensation expense	91,516	89,614	71,794
Tax benefit from stock-based compensation	29,159	24,481	23,014
Total stock-based compensation expense, net of tax effect	62,357	65,133	48,780
Cost of license and subscription revenue
Stock-based compensation expense
Total stock-based compensation expense	3,011	1,002	373
Cost of maintenance revenue
Stock-based compensation expense
Total stock-based compensation expense	1,820	1,886	1,694
Cost of services revenue
Stock-based compensation expense
Total stock-based compensation expense	22,781	21,856	18,622
Research and development
Stock-based compensation expense
Total stock-based compensation expense	23,421	25,440	18,123
Sales and marketing
Stock-based compensation expense
Total stock-based compensation expense	19,246	18,387	16,663
General and administrative
Stock-based compensation expense
Total stock-based compensation expense	$ 21,237	$ 21,043	$ 16,319