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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
Valuation and Qualifying Accounts
(dollars in millions)
 
Description
 
Balance at beginning of period
 
Charged to Expenses
 
Charged (credited) to other accounts (1)
 
Deductions
 
Balance at end of period
Allowance for doubtful accounts deducted from accounts receivable
 
 
 
 
 
 
 
 
 
 
Year ended December 31, 2017
 
$
7.1

 
1.1

 
0.4

 
(4.4
)
 
$
4.2

Year ended December 31, 2016
 
$
4.1

 
4.0

 
(0.4
)
 
(0.6
)
 
$
7.1

Year ended December 31, 2015
 
$
4.3

 
0.5

 
(0.3
)
 
(0.4
)
 
$
4.1

(1) Primarily foreign currency translation.
 
Description
 
Balance at beginning of period
 
Additions
 
 
 
Balance at end of period
Charged to Income
 
Charged to Equity (2)
 
Deductions
 
Tax valuation allowance
 
 
 
 
 
 
 
 
 
 
Year ended December 31, 2017
 
$
149.8

 
25.8

 
13.8

 
—

 
$
189.4

Year ended December 31, 2016
 
$
137.0

 
9.1

 
3.7

 
—

 
$
149.8

Year ended December 31, 2015
 
$
144.1

 
11.6

 
(18.7
)
 
—

 
$
137.0

(2) Includes foreign currency translation.