XML 64 R36.htm IDEA: XBRL DOCUMENT v3.4.0.3

Inventories (Schedule of Inventories) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Inventory, Net [Abstract]
Separative work units inventory	$ 169.9	$ 221.5
Uranium inventory	41.2	97.5
Materials and supplies	0.2	0.2
Inventories	211.3	319.2
Separative work units owed to customers and suppliers	16.9	33.1
Uranium owed to customers and suppliers	31.0	73.7
Inventories owed to customers and suppliers	47.9	106.8
Separative work units net of liability	153.0	188.4
Uranium inventory net of liability	10.2	23.8
Inventories, net	$ 163.4	$ 212.4

X

- Definition

Cost of SWU and uranium inventories owed related to the transfer of title from USEC to customer at fabricator whereby fabricator has elected to order less material from USEC than is required. Amounts owed are satisfied when fabricator orders future bulk deliveries.

+ References

No definition available.

+ Details

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

X

- Definition

Inventory net of Liability

+ References

No definition available.

+ Details

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

X

- Definition

Carrying amount as of the balance sheet date of separative work unit ("SWU") inventory. SWU is held as the SWU component of low enriched uranium. A SWU is the standard measure of uranium enrichment using a standard formula derived from the physics of enrichment. SWU costs are based on production costs and purchase costs. SWU inventory is valued at the lower of cost or market.

+ References

No definition available.

+ Details

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

X

- Definition

Separative work units inventory net of liability

+ References

No definition available.

+ Details

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

X

- Definition

Separative work units owed to customers and suppliers

+ References

No definition available.

+ Details

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

X

- Definition

Carrying amount as of the balance sheet date of uranium inventory. Uranium is held in the form of natural uranium and as the uranium component of low enriched uranium. Uranium inventory is valued at the lower of cost or market.

+ References

No definition available.

+ Details

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

X

- Definition

Uranium inventory net of liability

+ References

No definition available.

+ Details

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

X

- Definition

Uranium owed to customers and suppliers

+ References

No definition available.

+ Details

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

X

- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=51655945&loc=d3e3927-108312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

+ Details

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

X

- References

No definition available.

+ Details

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

X

- Definition

Amount before valuation and LIFO reserves of other supplies used within the manufacturing or production process expected to be consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Inventory
-URI http://asc.fasb.org/extlink&oid=6516093

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a)(5))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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