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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
VALUATION AND QUALIFYING ACCOUNTS
SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended December 31, 2018, 2017 and 2016
(in millions)
 
 
 
Allowance for doubtful accounts
 
Balance December 31, 2015
$
7.8

Provision for doubtful accounts
9.5

Write-offs and adjustments
(5.6
)
Recoveries
0.7

Balance December 31, 2016
$
12.4

 
 
Allowance for doubtful accounts
 
Balance December 31, 2016
$
12.4

Provision for doubtful accounts
5.3

Write-offs and adjustments
(7.0
)
Recoveries
0.7

Balance December 31, 2017
$
11.4

 
 
Allowance for doubtful accounts
 
Balance December 31, 2017
$
11.4

Provision for doubtful accounts
3.6

Write-offs and adjustments
(8.3
)
Recoveries
0.5

Balance December 31, 2018
$
7.2