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Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 28, 2013
Commitments and Contingencies Disclosure [Abstract]  
Changes in Estimated Liability for Product Warranty
 
 
Quarter Ended
 
Nine Months Ended
 
 
September 28,
2013
 
September 29,
2012
 
September 28,
2013
 
September 29,
2012
 
 
(In millions)
Beginning balance
 
$
14

 
$
18

 
$
16

 
$
20

New warranties issued
 
7

 
6

 
19

 
22

Settlements
 
(6
)
 
(7
)
 
(17
)
 
(23
)
Changes in liability for pre-existing warranties, including expirations
 
—

 
—

 
(3
)
 
(2
)
Ending balance
 
$
15

 
$
17

 
$
15

 
$
17