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Inventories (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Inventory, Net [Abstract] |  |
Separative work units borrowed in period, value | $ 9.4 |
Separative work units owed to others noncurrent | $ 31.8 | $ 22.4

X
- Definition Separative work units borrowed in period, value + References No definition available. + Details
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Namespace Prefix: | leu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Separative work units owed to others noncurrent + References No definition available. + Details
Name: | leu_Separativeworkunitsowedtoothersnoncurrent
Namespace Prefix: | leu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_InventoryNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration