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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Commitments For Non-Cancelable Leases [Table Text Block]
($ in millions)
 
Capital Leases
Operating Leases
Total
2014
 
$
1.4

$
11.4

$
12.8

2015
 
1.4

9.2

10.6

2016
 
0.6

6.3

6.9

2017
 
0.1

4.7

4.8

2018
 

3.8

3.8

After 2018
 

10.1

10.1

Total minimum payment required
 
$
3.5

$
45.5

$
49.0