Income Taxes (Components Of Provision (Benefit) For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017
Income Tax Disclosure [Abstract]
Current federal	$ 24,309	$ (43,366)	$ 55,887
Current state	8,539	9,562	8,096
Current Foreign Tax Expense (Benefit)	20,205	18,436	16,311
Total current	53,053	(15,368)	80,294
Deferred federal	16,983	(45,922)	29,065
Deferred state	5,282	2,941	3,601
Deferred Foreign Income Tax Expense (Benefit)	154	(2,789)	3,771
Deferred Income Tax Expense (Benefit)	22,419	(45,770)	36,437
Provision for income taxes	$ 75,472	$ (61,138)	$ 116,731