Shareholders' Equity (Tables)

12 Months Ended

Jul. 31, 2012

Shareholders' Equity [Abstract]

Schedule Of Treasury Stock

	2012			2011
Balance at beginning of year		13,245,864			12,222,381
Stock repurchases		4,503,587			1,956,648
Net issuance upon exercise of stock options		(1,270,526	)		(862,981	)
Issuance under compensation plans		(89,528	)		(62,304	)
Stock split and other activity		(12,408,565	)		(7,880	)
Balance at end of year		3,980,832			13,245,864