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Segment Information
 9 Months Ended
Sep. 30, 2013
Segment Reporting Information, Revenue for Reportable Segment [Abstract]  
Segment Information
SEGMENT INFORMATION

USEC has two reportable segments:  the LEU segment with two components, SWU and uranium, and the contract services segment. The LEU segment is USEC’s primary business focus and includes sales of the SWU component of LEU, sales of both the SWU and uranium components of LEU, and sales of uranium. The contract services segment consists of work performed for DOE and DOE contractors at the Portsmouth site and the Paducah GDP.  The contract services segment formerly included nuclear energy services and technologies provided by NAC International Inc. Refer to Note 2 regarding the sale of NAC in March 2013 and results of operations for NAC. Gross profit is USEC’s measure for segment reporting. There were no intersegment sales in the periods presented.

 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
 
2013
 
2012
 
2013
 
2012
 
(millions)
Revenue
 
 
 
 
 
 
 
LEU segment:
 
 
 
 
 
 
 
Separative work units
$
295.8

 
$
559.5

 
$
853.4

 
$
1,444.6

Uranium
3.8

 
—

 
45.3

 
3.6

 
299.6

 
559.5

 
898.7

 
1,448.2

Contract services segment
4.2

 
3.5

 
10.3

 
10.6

 
$
303.8

 
$
563.0

 
$
909.0

 
$
1,458.8

 
 
 
 
 
 
 
 
Segment Gross Profit (Loss)
 

 
 

 
 
 
 
LEU segment
$
(30.8
)
 
$
36.7

 
$
(63.7
)
 
$
83.8

Contract services segment
0.8

 
(0.1
)
 
0.1

 
(0.3
)
Gross profit (loss)
$
(30.0
)
 
$
36.6

 
$
(63.6
)
 
$
83.5