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Guarantees (Tables)
3 Months Ended
Apr. 26, 2015
Notes to financial statements [Abstract]  
Guarantees
 
Three Months Ended
 
April 26,
 
April 27,
 
2015
 
2014
 
(In millions)
Balance at beginning of period
$
8

 
$
7

Additions
6

 
2

Deductions
(1
)
 
(1
)
Balance at end of period 
$
13

 
$
8