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