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Commitments and Contigencies (Tables)
 6 Months Ended
Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]  
Summary of Accrued Warranty Obligation
The following table is a summary of the Company’s accrued warranty obligation (in millions):
 
 
Six Months Ended
 
June 30,
2018
 
July 1,
2017
Balance at the beginning of the period
$
18

 
$
21

Warranty expense
16

 
13

Warranty payments
(16
)
 
(15
)
Balance at the end of the period
$
18

 
$
19