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Segment Information (Tables)

12 Months Ended

Dec. 31, 2012

Revenue by Geographic Area, Major Customers and Segment Information

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

		Years Ended December 31,
		2012				2011				2010
United States		$	1,584.2			$	1,322.7			$	1,487.5
Foreign:
Japan			183.7				200.0				199.7
Other			150.2				149.1				348.2
			333.9				349.1				547.9
Total revenue		$	1,918.1			$	1,671.8			$	2,035.4

Segment Reporting Information

		Years Ended December 31,
		2012				2011				2010
		(millions)
Revenue
LEU segment:
Separative work units		$	1,821.8			$	1,330.9			$	1,521.4
Uranium			26.0				131.8				236.1
			1,847.8				1,462.7				1,757.5
Contract services segment			70.3				209.1				277.9
Revenue		$	1,918.1			$	1,671.8			$	2,035.4
Segment Gross Profit
LEU segment		$	129.3			$	71.6			$	134.3
Contract services segment			8.7				12.6				24.1
Gross profit		$	138.0			$	84.2			$	158.4

Schedule of Assets by Segment

		December 31,
		2012				2011				2010
		(millions)
Assets
LEU segment		$	2,208.5			$	3,491.4			$	3,760.6
Contract services segment			57.9				57.9				87.6
		$	2,266.4			$	3,549.3			$	3,848.2

X

- Definition

Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries.

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