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Commitments, Contingencies, and Uncertainties (Tables)
 12 Months Ended
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
At December 31, 2014, we were committed under noncancelable lease agreements requiring minimum annual rentals payable as follows:
(in millions)
2015
2016
2017
2018
2019
Thereafter
Minimum annual rentals
$
63.6

$
43.6

$
35.3

$
23.0

$
11.3

$
17.7