Stock-Based Compensation Expense and Shareholders' Equity (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 102,191	$ 91,570	$ 89,176
Net impact of deferred stock-based compensation	(374)	(54)	438
Total stock-based compensation expense	101,817	91,516	89,614
Stock-based compensation expense
Total stock-based compensation expense	101,817	91,516	89,614
Tax benefit from stock-based compensation	28,360	29,159	24,481
Total stock-based compensation expense, net of tax effect	73,457	62,357	65,133
Cost of subscription and support revenue
Stock-based compensation expense
Total stock-based compensation expense	7,575	4,659	2,842
Cost of license revenue
Stock-based compensation expense
Total stock-based compensation expense	769	173	46
Cost of services revenue
Stock-based compensation expense
Total stock-based compensation expense	20,816	22,781	21,856
Research and development
Stock-based compensation expense
Total stock-based compensation expense	26,324	23,421	25,440
Sales and marketing
Stock-based compensation expense
Total stock-based compensation expense	21,260	19,245	18,387
General and administrative
Stock-based compensation expense
Total stock-based compensation expense	$ 25,073	$ 21,237	$ 21,043