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Warranty Obligations
 6 Months Ended
Jun. 30, 2015
Product Warranties Disclosures [Abstract]  
Warranty Obligations
Warranty Obligations
 
We record a liability for estimated warranty obligations at the dates our products are sold. We record the liability based on our estimate of costs to settle future claims. Adjustments are made as new information becomes available.

Changes in warranty liabilities — 
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
2015
 
2014
 
2015
 
2014
Balance, beginning of period
$
46

 
$
56

 
$
47

 
$
54

Amounts accrued for current period sales
7

 
5

 
14

 
9

Adjustments of prior estimates
2

 
7

 
4

 
11

Settlements of warranty claims
(8
)
 
(9
)
 
(16
)
 
(15
)
Currency impact
1

 


 
(1
)
 


Balance, end of period
$
48

 
$
59

 
$
48

 
$
59