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Basis of Presentation Basis of Presentation (Policies) | 3 Months Ended
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Mar. 31, 2014
Accounting Policies [Abstract] |
Financial Reporting in Reorganization [Policy Text Block] | Financial Reporting in Reorganization Liabilities subject to compromise in the Chapter 11 proceedings are distinguished from liabilities of the Company's subsidiaries that were not part of the Bankruptcy Filing and from post-petition liabilities in the accompanying Consolidated Condensed Balance Sheet as of March 31, 2014. Under Section 362 of the Bankruptcy Code, the filing of a voluntary bankruptcy petition by USEC Inc. automatically stayed most actions against USEC Inc., including most actions to collect indebtedness incurred prior to March 5, 2014 or to exercise control over USEC Inc.’s property. Accordingly, although the Bankruptcy Filing triggered defaults for certain of USEC Inc.’s obligations, creditors are stayed from taking any actions as a result of such defaults. Absent an order of the Bankruptcy Court, substantially all of USEC Inc.’s pre-petition liabilities are subject to settlement under the proposed reorganization plan. Expenses, gains and losses directly associated with reorganization proceedings are reported as Reorganization Items, Net in the accompanying Consolidated Condensed Statement of Operations. Reorganization Items are indicated as cash or non-cash items in the accompanying Consolidated Condensed Statement of Cash Flows.
New Accounting Pronouncements, Policy [Policy Text Block] | New Accounting Standards In July 2013, the Financial Accounting Standards Board ("FASB") issued guidance requiring an entity to present unrecognized tax benefits as a reduction to deferred tax assets when a net operating loss carryforward, similar tax loss or a tax credit carryforward exists, with limited exceptions. This pronouncement is effective beginning in the first quarter of 2014. USEC has historically presented uncertain tax positions in accordance with the new guidance and the implementation of the guidance did not have a material impact on its consolidated financial statements. In April 2014, the FASB issued amendments to guidance for reporting discontinued operations and disposals of components of an entity. The amended guidance changes the definition of a discontinued operation to include only those disposals of components of an entity that represent a strategic shift that has, or will have, a major effect on an entity’s operations and financial results. The amendments also expand the disclosure requirements for discontinued operations and add new disclosures for individually significant dispositions that do not qualify as discontinued operations. The amendments are effective prospectively beginning in the first quarter of 2015 (early adoption is permitted only for disposals that have not been previously reported). The implementation of the amended guidance is not expected to have a material impact on USEC's results of operations, cash flows or financial position.

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- Definition Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact. + References No definition available. + Details
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- Definition Financial Reporting in Reorganization [Policy Text Block] + References No definition available. + Details
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