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v3.19.1

Segment Information (Segment Reporting Information) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Segment Reporting Information [Line Items] |  |
Revenue | $ 38.7 | $ 35.7
Gross Profit | (5.5) | (5.6)
Low Enriched Uranium Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross Profit |  | (13.5)
Contract Services Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross Profit |  | 7.9
Separative Work Units [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue |  | 17.7
Uranium [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | 22.7 |
Product [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | $ 35.1 | $ 21.3

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