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Property and Equipment Information for Geographic Areas (Detail) (USD $) In Millions, unless otherwise specified	Jul. 28, 2012	Jul. 30, 2011	Jul. 31, 2010
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 3,402	$ 3,916	$ 3,941
UNITED STATES
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	2,842	3,284	3,283
International
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 560	$ 632	$ 658

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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