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Commitments and Contingencies Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Future minimum lease payments under non-cancelable operating leases amounted to $13.1 million at December 31, 2013 as follows:
Years ending December 31,
(in millions)

2014
$
3.8

2015
$
2.4

2016
$
1.6

2017
$
1.4

2018
$
1.3

Thereafter
$
2.6