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Commitment and Contingencies (Details) (USD $) | Jun. 30, 2011 | Dec. 31, 2010
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Commitments and Contingencies |  |
Amount of application under DOE Loan Guarantee Program | $ 2,000,000,000 |
Maximum investment under securities purchase agreement | 200,000,000 |
Maximum investment under securities purchase agreement, each party | 100,000,000 |
First installment under securities purchase agreement, total | 75,000,000 |
Second installment under securities purchase agreement, total (planned) | 50,000,000 |
Potential financing from Japanese export credit agencies under discussion | 1,000,000,000 |
Minimum annual SWU capacity for American Centrifuge Plant under 2002 DOE-USEC milestone agreement | 3,500,000 |
Estimated maximum potential severance liability | 2,000,000 | 25,000,000
Estimated maximum potential severance liability, DOE share |  | $ 18,500,000

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