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Transition Charges Transition Charges (Tables)
 3 Months Ended
Mar. 31, 2015
Restructuring and Related Activities [Abstract]  
Special Charges Summary [Table Text Block]
A summary of special charges and changes in the related balance sheet accounts in the first quarter of 2015 follows (in millions):
 
Liability Balance to Be Paid,
Dec. 31, 2014
 
Three Months Ended Mar. 31, 2015
 
Liability Balance to Be Paid,
Mar. 31, 2015
 
 
Special Charges
 

Paid
 
Workforce reductions, primarily severance payments
$
2.4

 
$
0.9

 
$
(2.7
)
 
$
0.6

Less: Amounts billed to DOE
*

 
(0.3
)
 
*

 
*

 
$
2.4

 
$
0.6

 
$
(2.7
)
 
$
0.6

 
 
* - not applicable