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Inventories (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Inventory, Net [Abstract] |  |
Separative work units valuation change in period | $ 2.1 | $ 0.3
Separative work units repaid in period, value |  | $ (26.5)

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- Definition Borrowed inventory valuation change in period + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Separative work units repaid in period, value + References No definition available. + Details
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Namespace Prefix: | leu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration