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Special Charges (Table) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Termination benefit costs	$ 0.1	$ 8.7	$ 0.4
DOE Share of Paducah Termination Benefit Costs				$ 0.3
Payments for one-time termination benefits			(3.1)
Restructuring liability	6.0		6.0		$ 8.7
Contract Reduction [Member]
Termination benefit costs			0.1
Payments for one-time termination benefits			(2.9)
Restructuring liability	5.6		5.6		8.4
Other Restructuring [Member]
Termination benefit costs		$ 1.1	0.3	$ 4.9
Payments for one-time termination benefits			(0.2)
Restructuring liability	$ 0.4		$ 0.4		$ 0.3

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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