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Guarantees and Product Warranties (Tables)
 12 Months Ended
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Changes in warranty liability balance
Changes in the Company’s warranty liability balance are illustrated in the following table:
 
2014
 
2013
Balance at January 1
$
83,199

 
$
81,751

Current period accruals (1)
81,316

 
58,736

Current period settlements
(51,167
)
 
(57,288
)
Balance at December 31
$
113,348

 
$
83,199

(1)
Includes the impact of foreign exchange rate fluctuations.