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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Changes in Company's Warranty Liabilities
The following table summarizes the changes in the Company’s warranty liabilities:
(in millions)
2015
 
2014
Balance at January 1
$
7.7

 
$
6.6

Provisions to expense
5.9

 
7.1

Actual costs incurred
(6.2
)
 
(6.0
)
Balance at December 31
$
7.4

 
$
7.7