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Property And Equipment, Net (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
May 02, 2015
May 03, 2014
Jan. 31, 2015
Property, Plant and Equipment [Line Items]      
Property and Equipment, at Cost $ 5,587us-gaap_PropertyPlantAndEquipmentGross $ 5,184us-gaap_PropertyPlantAndEquipmentGross $ 5,480us-gaap_PropertyPlantAndEquipmentGross
Accumulated Depreciation and Amortization (3,281)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (3,109)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (3,203)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property and Equipment, Net 2,306us-gaap_PropertyPlantAndEquipmentNet 2,075us-gaap_PropertyPlantAndEquipmentNet 2,277us-gaap_PropertyPlantAndEquipmentNet
Depreciation $ 111us-gaap_Depreciation $ 110us-gaap_Depreciation