Contract Services and Advanced Technology Costs	6 Months Ended
Contract Services and Advanced Technology Costs	Jun. 30, 2017
Research and Development [Abstract]
Contract Services and Advanced Technology Costs and Other Income	CONTRACT SERVICES AND ADVANCED TECHNOLOGY LICENSE AND DECOMMISSIONING COSTS The contract services segment includes Revenue and Cost of Sales for engineering and testing work Centrus performs on the American Centrifuge technology under a government contract with UT-Battelle, LLC (“UT-Battelle”), the operator of Oak Ridge National Laboratory. The current contract between Centrus and UT-Battelle (the “2017 ORNL Contract”) is for the period from October 1, 2016, through September 30, 2017 and is valued at approximately $25 million. The 2017 ORNL Contract provides for payments for monthly reports of deliverables of approximately $2.0 million per month and additional aggregate payments of $1.0 million based on completion of certain milestones. The 2017 ORNL Contract is currently being funded incrementally. Funding for the program is provided to UT-Battelle by the U.S. government. The Company’s contract with UT-Battelle that ended September 30, 2016 (the “2016 ORNL Contract”), provided for payments for monthly reports of deliverables of approximately $2.7 million per month. The 2016 ORNL Contract, which was signed in March 2016, provided for payments for reports related to work performed since October 1, 2015. Revenue in the six months ended June 30, 2016, includes $16.2 million for reports on work performed in the six months ended June 30, 2016, and $8.1 million for March 2016 reports on work performed in the three months ended December 31, 2015. Expenses for contract work performed in the six months ended June 30, 2016, are included in Cost of Sales. Expenses for work performed in the three months ended December 31, 2015, before entering into the 2016 ORNL Contract, were included in Advanced Technology License and Decommissioning Costs in 2015. American Centrifuge expenses that are outside of the Company’s contracts with UT-Battelle are included in Advanced Technology License and Decommissioning Costs, including ongoing costs to maintain the demobilized Piketon facility and our licenses from the U.S. Nuclear Regulatory Commission (“NRC”) at that location. In the second quarter of 2016, the Company commenced the decontamination and decommissioning (“D&D”) of the Piketon facility in accordance with the requirements of NRC and the U.S. Department of Energy (“DOE”). Refer to Note 12, Commitments and Contingencies, for additional details.

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.