XML 34 R54.htm IDEA: XBRL DOCUMENT v2.4.0.8

Inventories (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Inventory, Net [Abstract]
Fresh-Start Adjustment, Increase (Decrease), Inventories	$ 35.4
Inventories provided by customers and suppliers	$ 698	$ 1,300
Decline in Uranium Quantities Provided by Customers and Suppliers	46.00%

X

- Definition

Decline in Uranium Quantities Provided by Customers and Suppliers

+ References

No definition available.

+ Details

Name:	leu_DeclineInUraniumQuantitiesProvidedByCustomersAndSuppliers
Namespace Prefix:	leu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Uranium held by USEC to which title was held by customers and suppliers and for which no assets or liabilities were recorded on the balance sheet

+ References

No definition available.

+ Details

Name:	leu_InventoriesProvidedByCustomersAndSuppliers
Namespace Prefix:	leu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of fresh-start adjustment to inventories.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 852

-SubTopic 10

-Section 55

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 852

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765

+ Details

Name:	us-gaap_FreshStartAdjustmentIncreaseDecreaseInventories
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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