Property And Equipment, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012	Jul. 30, 2011	Jan. 28, 2012
Property, Plant and Equipment [Line Items]
Property and Equipment, at Cost	$ 4,612	$ 4,227	$ 4,612	$ 4,227	$ 4,387
Accumulated Depreciation and Amortization	(2,837)	(2,644)	(2,837)	(2,644)	(2,743)
Property and Equipment, Net	1,775	1,583	1,775	1,583	1,644
Depreciation	$ 96	$ 97	$ 190	$ 194

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References+ Details

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References+ Details

- Definition

Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References+ Details

- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References+ Details