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Inventories (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Inventory, Net [Abstract]
UF6 units borrowed in period, value	$ 22.5
Separative work units valuation change in period		$ 1.9	$ 0.6	$ 3.7	$ 3.5

X

- Definition

Borrowed inventory valuation change in period

+ References

No definition available.

+ Details

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

X

- Definition

UF6 units borrowed in period, value

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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