Stockholders' Equity (Treasury Stock) (Details) - shares	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Schedule of Treasury Shares Activity
Balance as of beginning of year	29,089,612
Stock repurchases	2,500,000	2,900,000
Net issuance upon exercise of stock options	(1,006,602)	(365,267)	(1,030,938)
Balance as of end of year	30,528,696	29,089,612
Treasury Stock
Schedule of Treasury Shares Activity
Balance as of beginning of year	29,089,612	26,620,560
Stock repurchases	2,485,000	2,900,000
Net issuance upon exercise of stock options	(941,837)	(360,448)
Issuance under compensation plans	(84,942)	(52,678)
Other activity	(19,137)	(17,822)
Balance as of end of year	30,528,696	29,089,612	26,620,560