Balance Sheet Details (Detail) (USD $) In Millions, unless otherwise specified	Oct. 27, 2012		Jul. 28, 2012
Inventories:
Raw materials	$ 101		$ 127
Work in process	36		35
Distributor inventory and deferred cost of sales	671		630
Manufactured finished goods	615		597
Total finished goods	1,286		1,227
Service-related spares	237		213
Demonstration systems	49		61
Total	1,709		1,663
Property and Equipment, net:
Land, buildings, and building & leasehold improvements	4,458		4,363
Computer equipment and related software	1,491		1,469
Production, engineering, and other equipment	5,495		5,364
Operating lease assets	312	[1]	300	[1]
Furniture and fixtures	494		487
Property, plant and equipment, gross	12,250		11,983
Less accumulated depreciation and amortization	(8,841)		(8,581)
Total	3,409		3,402
Other Assets:
Deferred tax assets	2,061		2,270
Investments in privately held companies	830		858
Other	849		754
Total	3,740		3,882
Deferred Revenue:
Deferred Revenue Services	8,753		9,173
Unrecognized revenue on product shipments and other deferred revenue	3,074		2,975
Cash receipts related to unrecognized revenue from two-tier distributors	796		732
Total product deferred revenue	3,870		3,707
Deferred Revenue	12,623		12,880
Current	8,721		8,852
Noncurrent	3,902		4,028
Total	$ 12,623		$ 12,880

[1] Accumulated depreciation related to operating lease assets was $192 and $181 as of October 27, 2012 and July 28, 2012, respectively.