Description of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jul. 31, 2012

Accounting Policies [Abstract]

Composition of shares used in the computation of basic and diluted net income per share

The following table presents the composition of shares used in the computation of basic and diluted net income per share for the periods indicated.

	Twelve Months Ended July 31,
(In millions, except per share amounts)	2012		2011			2010
Numerator:
Net income from continuing operations	$	767	$	652		$	564
Net income (loss) from discontinued operations	25		(18		)	10
Net income	$	792	$	634		$	574
Denominator:
Shares used in basic per share amounts:
Weighted average common shares outstanding	296		307			316
Shares used in diluted per share amounts:
Weighted average common shares outstanding	296		307			316
Dilutive common equivalent shares from stock options and restricted stock awards	9		10			9
Dilutive weighted average common shares outstanding	305		317			325
Basic and diluted net income per share:
Basic net income per share from continuing operations	$	2.59	$	2.12		$	1.79
Basic net income (loss) per share from discontinued operations	0.08		(0.06		)	0.03
Basic net income per share	$	2.67	$	2.06		$	1.82
Diluted net income per share from continuing operations	$	2.52	$	2.06		$	1.74
Diluted net income (loss) per share from discontinued operations	0.08		(0.06		)	0.03
Diluted net income per share	$	2.60	$	2.00		$	1.77
Weighted average stock options and restricted stock units excluded from     calculation due to anti-dilutive effect	3		—			8