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Commitments And Contingencies (Tables)
 6 Months Ended
Jul. 02, 2016
Commitments and Contingencies Disclosure [Abstract]  
Schedule Of Product Warranty Liability
Changes in the Company’s product warranty liability during the three and six months ended July 2, 2016 and July 4, 2015 were as follows (in millions):
 
Three Months Ended
 
Six Months Ended

July 2, 2016
 
July 4, 2015
 
July 2, 2016
 
July 4, 2015
Balance at beginning of period
$
26

 
$
32

 
$
31

 
$
35

Warranty expense (benefit) recognized
2

 
(2
)
 
1

 
(4
)
Warranty credits issued
(3
)
 
(1
)
 
(7
)
 
(2
)
Balance at end of period
$
25

 
$
29

 
$
25

 
$
29