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

6 Months Ended

Jan. 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.

	Three Months Ended				Six Months Ended
(In millions, except per share amounts)	January 31, 2012		January 31, 2011		January 31, 2012		January 31, 2011
Numerator:
Net income	$	118	$	73	$	54	$	3
Denominator:
Shares used in basic per share amounts:
Weighted average common shares outstanding	297		308		298		312
Shares used in diluted per share amounts:
Weighted average common shares outstanding	297		308		298		312
Dilutive common equivalent shares from stock options
and restricted stock awards	9		10		9		10
Dilutive weighted average common shares outstanding	306		318		307		322
Basic and diluted net income per share:
Basic net income per share	$	0.40	$	0.24	$	0.18	$	0.01
Diluted net income per share	$	0.39	$	0.23	$	0.18	$	0.01
Weighted average stock options and restricted stock units excluded from calculation due to anti-dilutive effect	3		—		3		1