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Schedule II - Valuation And Qualifying Accounts
 12 Months Ended
Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation And Qualifying Accounts SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS
Years ended December 31, 2018, 2017 and 2016

 
 
 
 
 
 
 
 
 
(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, 2018
 
$
6.2

 
$
2.0

 
$
(1.2
)
 
$
7.0

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