v3.10.0.1
Supplementary Data Valuation and Qualifying Accounts - Allowance for Uncollectible Accounts (Tables)
 12 Months Ended
Dec. 31, 2018
Valuation and Qualifying Accounts - Allowance for Uncollectible Accounts [Abstract]  
Valuation and Qualifying Accounts - Allowance for Uncollectible Accounts Receivable
Valuation and Qualifying Accounts – Allowance for Uncollectible Accounts Receivable
 
Years ended December 31,
 
2018
 
2017
 
2016
Balance at beginning of period
$
42.7

 
$
55.7

 
$
54.2

Charges to costs and expenses
6.5

 
9.5

 
16.7

Adjustments:
 
 
 
 
 
Acquisitions/(dispositions)
2.2

 
(1.0
)
 
(2.5
)
Uncollectible accounts written off
(7.1
)
 
(25.5
)
 
(9.4
)
Foreign currency translation adjustments
(1.8
)
 
4.0

 
(3.3
)
Balance at end of period
$
42.5

 
$
42.7

 
$
55.7