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Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2016
Accounting Policies [Abstract]  
Schedule of Inventory, Current
Inventories are stated at the lower of cost or market, determined by the first-in, first-out method, and consist of the following:
 
September 30,
 
December 31,
(in millions)
2016
 
2015
Finished goods
$
137.3

 
$
126.7

Work-in-process
12.4

 
14.0

Raw materials and supplies
64.6

 
58.5

 
$
214.3

 
$
199.2

Changes in accrued sales returns
The Company had the following activity for sales returns from December 31, 2015 to September 30, 2016:
(in millions)
 
Balance as of December 31, 2015
$
28.5

Amounts accrued
100.6

Returns charged to accrual
(96.2
)
Balance as of September 30, 2016
$
32.9

Warranty activity
The Company had the following activity for its accrued warranty expense from December 31, 2015 to September 30, 2016:
(in millions)
 
Balance as of December 31, 2015
$
29.6

Amounts accrued
29.2

Warranties charged to accrual
(25.5
)
Balance as of September 30, 2016
$
33.3