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Intangible Assets (Tables)
 3 Months Ended
Apr. 29, 2018
Notes to financial statements [Abstract]  
Amortizable Intangible Assets Components
 
April 29, 2018
 
January 28, 2018
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying
Amount
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying
Amount
 
(In millions)
 
(In millions)
Acquisition-related intangible assets
$
195

 
$
(183
)
 
$
12

 
$
195

 
$
(180
)
 
$
15

Patents and licensed technology
483

 
(440
)
 
43

 
469

 
(432
)
 
37

Total intangible assets
$
678

 
$
(623
)
 
$
55

 
$
664

 
$
(612
)
 
$
52