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Schedule II - Valuation And Qualifying Accounts
 12 Months Ended
Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation And Qualifying Accounts
SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS
Years ended December 31, 2017, 2016 and 2015
 
 
 
 
 
 
 
 
 
(in millions)
 
Balance at
Beginning
of Period
 
Charged to
Costs and
Expenses
 
Deductions
 
Balance at
End of
Period
Allowance for doubtful accounts:
 
 
 
 
 
 
 
 
Year Ended December 31, 2017
 
$
5.9

 
$
2.1

 
$
(1.8
)
 
$
6.2

Year Ended December 31, 2016
 
6.0

 
2.0

 
(2.1
)
 
5.9

Year Ended December 31, 2015
 
5.7

 
4.2

 
(3.9
)
 
6.0

 
 
 
 
 
 
 
 
 
Reserve for sales returns:
 
 
 
 
 
 
 
 
Year Ended December 31, 2017
 
$
6.8

 
$
40.6

 
$
(41.0
)
 
$
6.4

Year Ended December 31, 2016
 
4.9

 
38.1

 
(36.2
)
 
6.8

Year Ended December 31, 2015
 
5.1

 
34.4

 
(34.6
)
 
4.9