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Inventories (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Inventory [Line Items]
UF6 units borrowed in period, value	$ 22.5
Inventory Loans, Current & Noncurrent	83.2	$ 58.6
Inventory Loans, Current	9.9	$ 9.9
Separative work units valuation change in period	$ 2.1

X

- Definition

Inventory Loans, Current

+ References

No definition available.

+ Details

Name:	leu_InventoryLoansCurrent
Namespace Prefix:	leu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Inventory Loans, Current & Noncurrent

+ References

No definition available.

+ Details

Name:	leu_InventoryLoansCurrentNoncurrent
Namespace Prefix:	leu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Separative work units valuation change in period

+ References

No definition available.

+ Details

Name:	leu_SeparativeWorkUnitsValuationChangeInPeriod
Namespace Prefix:	leu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

UF6 units borrowed in period, value

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No definition available.

+ Details

Name:	leu_UF6UnitsBorrowedInPeriodValue
Namespace Prefix:	leu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_InventoryLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration