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Restructuring and Severance (Tables)
 3 Months Ended
Mar. 31, 2018
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs [Table Text Block]
A summary of activity in the restructuring and severance liability is shown below:
(dollars in millions)
Employee
Separation
 
Lease
Abandonment
 
Total
Balance as of December 31, 2017
$
14.4

 
$
0.1

 
$
14.5

Charges
0.3

 
—

 
0.3

Utilizations
(7.3
)
 
—

 
(7.3
)
Balance as of March 31, 2018
$
7.4

 
$
0.1

 
$
7.5
Schedule of Restructuring and Related Costs by Segment [Table Text Block]
A summary of restructuring activity by business segment is presented below:
(dollars in millions)
Entertainment and Communications
 
IT Services and Hardware
 
Corporate
 
Total
Balance as of December 31, 2017
$
12.3

 
$
2.2

 
$
—

 
$
14.5

Charges
—

 
0.3

 
—

 
0.3

Utilizations
(5.7
)
 
(1.6
)
 
—

 
(7.3
)
Balance as of March 31, 2018
$
6.6

 
$
0.9

 
$
—

 
$
7.5