Contract Services and Advanced Technology Costs	3 Months Ended
Contract Services and Advanced Technology Costs	Mar. 31, 2016
Research and Development [Abstract]
Contract Services and Advanced Technology Costs and Other Income	CONTRACT SERVICES AND ADVANCED TECHNOLOGY COSTS The contract services segment includes Revenue and Cost of Sales for American Centrifuge work Centrus performs as a contractor to UT-Battelle. The Company’s current contract signed in March 2016 with UT-Battelle provides for continued development work at the Company’s facilities in Oak Ridge, Tennessee, through September 30, 2016. The contract is a firm, fixed-price contract that provides for payments for monthly reports of approximately $2.7 million per month, down from approximately $6.9 million per month. Although the Company’s prior contract with UT-Battelle expired September 30, 2015, Centrus continued to perform work at the expected reduced scope as the parties worked toward a successor agreement. The new contract signed in March 2016 provided for payment for reports related to work performed since October 1, 2015. Revenue in the three months ended March 31, 2016 includes $8.1 million for March reports on work performed in the three months ended December 31, 2015, and $8.1 million for March reports on work performed in the three months ended March 31, 2016. Expenses for contract work performed in the three months ended March 31, 2016 are included in Cost of Sales. Expenses for work performed in the three months ended December 31, 2015 before there was a contract were included in Advanced Technology Costs in 2015. American Centrifuge expenses that are outside of our contracts with UT-Battelle, including demobilization and maintenance costs, are included in Advanced Technology Costs. In addition to severance costs (see Note 2) and demobilization costs, Centrus will incur expenditures associated with the decontamination and decommissioning (“D&D”) of the Piketon facility in accordance with the requirements of the U.S Nuclear Regulatory Commission (“NRC”) and DOE (see Note 13).

The entire disclosure for research, development, and computer software activities, including contracts and arrangements to be performed for others and with federal government. Includes costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility and in-process research and development acquired in a business combination consummated during the period.