Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Net revenue:
Product	$ 316	$ 299	$ 635	$ 596
Service and other	849	717	1,416	1,198
Total net revenue	1,165	1,016	2,051	1,794
Cost of revenue:
Cost of product revenue	36	37	60	66
Cost of service and other revenue	207	166	377	317
Amortization of acquired technology	3	3	5	6
Selling and marketing	469	405	777	688
Research and development	286	243	579	489
General and administrative	143	140	288	266
Amortization of other acquired intangible assets	1	0	2	1
Total costs and expenses	1,145	994	2,088	1,833
Operating income (loss)	20	22	(37)	(39)
Interest expense	(6)	(11)	(11)	(20)
Interest and other income (expense), net	5	(1)	8	(3)
Income (loss) before income taxes	19	10	(40)	(62)
Income tax provision (benefit)	40	(3)	(2)	(45)
Net income (loss)	$ (21)	$ 13	$ (38)	$ (17)
Earnings Per Share, Basic
Basic net income (loss) per share (in dollars per share)	$ (0.08)	$ 0.05	$ (0.15)	$ (0.07)
Shares used in basic per share calculations (in shares)	256	257	256	257
Earnings Per Share, Diluted
Diluted net income (loss) per share (in dollars per share)	$ (0.08)	$ 0.05	$ (0.15)	$ (0.07)
Shares used in diluted per share calculations (in shares)	256	260	256	257
Dividends
Cash dividends declared per common share (in dollars per share)	$ 0.39	$ 0.34	$ 0.78	$ 0.68