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Property And Equipment, Net (Tables)
 9 Months Ended
Oct. 31, 2015
Property, Plant and Equipment [Abstract]  
Summary Of Property And Equipment, Net
The following table provides details of property and equipment, net as of October 31, 2015, January 31, 2015 and November 1, 2014:
 
October 31,
2015
 
January 31,
2015
 
November 1,
2014
 
(in millions)
Property and Equipment, at Cost
$
5,652

 
$
5,480

 
$
5,462

Accumulated Depreciation and Amortization
(3,302
)
 
(3,203
)
 
(3,181
)
Property and Equipment, Net
$
2,350

 
$
2,277

 
$
2,281