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Transition Charges Transition Charges (Tables)
6 Months Ended
Jun. 30, 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 six months ended June 30, 2015 follows (in millions):
 
Liability Balance to Be Paid,
Dec. 31, 2014
 
Six Months Ended June 30, 2015
 
Liability Balance to Be Paid,
June 30, 2015
 
 
Special Charges
 

Paid
 
Workforce reductions, primarily severance payments
$
2.4

 
$
3.8

 
$
(3.8
)
 
$
2.4

Less: Amounts billed to DOE
 
 
(0.3
)
 
 
 
 
Special charges for workforce reductions

 
$
3.5