Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Net revenue:
Product	$ 297	$ 271
Service and other	481	442
Total net revenue	778	713
Cost of revenue:
Cost of product revenue	29	29
Cost of service and other revenue	151	131
Amortization of acquired technology	3	6
Selling and marketing	283	244
Research and development	246	213
General and administrative	126	117
Amortization of other acquired intangible assets	1	2
Total costs and expenses	839	742
Operating loss from continuing operations	(61)	(29)
Interest expense	(9)	(7)
Interest and other income (expense), net	(2)	(4)
Loss before income taxes	(72)	(40)
Income tax provision (benefit)	(42)	(9)
Net loss from continuing operations	(30)	(31)
Net income from discontinued operations	0	0
Net loss	$ (30)	$ (31)
Earnings Per Share, Basic [Abstract]
Basic net loss per share from continuing operations (in USD per share)	$ (0.12)	$ (0.11)
Basic net income per share from discontinued operations (in USD per share)	0.00	0.00
Basic net loss per share (in USD per share)	$ (0.12)	$ (0.11)
Shares used in basic per share calculations	258	272
Earnings Per Share, Diluted [Abstract]
Diluted net loss per share from continuing operations (in USD per share)	$ (0.12)	$ (0.11)
Diluted net income per share from discontinued operations (in USD per share)	0.00	0.00
Diluted net loss per share (in USD per share)	$ (0.12)	$ (0.11)
Shares used in diluted per share calculations (in shares)	258	272
Dividends [Abstract]
Cash dividends declared per common share (in USD per share)	$ 0.34	$ 0.30