Accounting For Stock-Based Compensation (Tables)

3 Months Ended

Oct. 31, 2011

Accounting For Stock-Based Compensation [Abstract]

Summary Of Stock Option Activity

	Options Outstanding			Weighted Average Exercise Price
Outstanding at July 31, 2011		4,193,997		$	35.44
Granted		2,249			59.47
Exercised		(179,866	)		21.69
Canceled		(4,748	)		48.69
Outstanding at October 31, 2011		4,011,632			36.06

Summary Of Information Concerning Outstanding And Exercisable Options

Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$17 to $25		523,716		1.05	$	17.85		523,716	$	17.85
$25 to $33		1,327,462		2.98		30.66		1,312,048		30.65
$33 to $41		851,438		5.84		35.56		837,641		35.58
$41 to $49		808,026		7.37		43.53		633,418		43.88
$49 and above		500,990		8.97		58.20		23,740		56.79
		4,011,632		4.97		36.06		3,330,563		32.58