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Commitment and Contingencies (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2016	Sep. 30, 2015
ACTDO DOE Funding – Monthly	$ 6.7leu_ACTDODOEFundingMonthly
Scenario, Forecast [Member]
FY16 budget request for centrifuge program		100
FY16 House bill for direct appropriations for centrifuge program		50
FY16 House bill for reprogramming authority for centrifuge program		50
ACTDO DOE Funding – Monthly			$ 6.9