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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2016
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information [Text Block]
Supplemental Cash Flow Information
 
Year Ended December 31,
(dollars in millions)
2016
 
2015
 
2014
Capitalized interest expense
$
0.7

 
$
1.1

 
$
0.8

Cash paid for:
 
 
 
 
 
Interest
71.1

 
108.5

 
153.1

Income taxes, net of refunds
1.7

 
8.8

 
9.1

Noncash investing and financing activities:
 
 
 
 
 
Accrual of CyrusOne dividends
1.1

 
2.1

 
6.0

Acquisition of property by assuming debt and other financing arrangements
12.0

 
5.8

 
4.7

Acquisition of property on account
23.8

 
34.6

 
24.8