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v3.21.1

Segment Information (Segment Reporting Information) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Segment Reporting Information [Line Items] |  |
Revenue | $ 55.6 | $ 45.0
Gross Profit | 11.7 | 19.6
Low Enriched Uranium Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross Profit | 12.7 | 17.4
Technical Solutions Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross Profit | (1.0) | 2.2
Separative Work Units [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | 38.1 | 30.7
Uranium [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | 0.0 | 0.0
Product [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | 38.1 | 30.7
Service [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenue | $ 17.5 | $ 14.3

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