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Warranty Obligations (Tables)
 12 Months Ended
Dec. 31, 2014
Product Warranties Disclosures [Abstract]  
Changes in Warranty Liabilities
Changes in warranty liabilities —
 
2014
 
2013
 
2012
Balance, beginning of period
$
54

 
$
66

 
$
72

Amounts accrued for current period sales
19

 
17

 
20

Adjustments of prior estimates
18

 
6

 
4

Settlements of warranty claims
(41
)
 
(34
)
 
(31
)
Currency impact
(3
)
 
(1
)
 
1

Balance, end of period
$
47

 
$
54

 
$
66