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Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 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:
 
March 31,
 
December 31,
(in millions)
2016
 
2015
Finished goods
$
137.5

 
$
126.7

Work-in-process
13.6

 
14.0

Raw materials and supplies
63.3

 
58.5

 
$
214.4

 
$
199.2
Changes in accrued sales returns
The Company had the following activity for sales returns from December 31, 2015 to March 31, 2016:
(in millions)
 
Balance as of December 31, 2015
$
28.5

Amounts accrued
34.2

Returns charged to accrual
(32.8
)
Balance as of March 31, 2016
$
29.9
Warranty activity
The Company had the following activity for its accrued warranty expense from December 31, 2015 to March 31, 2016:
(in millions)
 
Balance as of December 31, 2015
$
29.6

Amounts accrued
7.9

Warranties charged to accrual
(8.3
)
Balance as of March 31, 2016
$
29.2