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Inventories | 9 Months Ended
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Sep. 30, 2014
Inventory, Net [Abstract] |
Inventories | INVENTORIES Centrus is a supplier of LEU for nuclear power plants. LEU consists of two components: separative work units (“SWU”) and uranium. SWU is a standard unit of measurement that represents the effort required to transform a given amount of natural uranium into two components: enriched uranium having a higher percentage of U 235 and depleted uranium having a lower percentage of U 235. The SWU contained in LEU is calculated using an industry standard formula based on the physics of enrichment. The amount of enrichment deemed to be contained in LEU under this formula is commonly referred to as its SWU component and the quantity of natural uranium deemed to be used in the production of LEU under this formula is referred to as its uranium component. Centrus holds uranium at licensed locations in the form of natural uranium and as the uranium component of LEU. Centrus holds SWU as the SWU component of LEU. Centrus may also hold title to the uranium and SWU components of LEU at fabricators to meet book transfer requests by customers. Fabricators process LEU into fuel for use in nuclear reactors. Costs included in inventory include purchase costs and previous production costs associated with the Paducah GDP. As of September 30, 2014, SWU inventory costs reflect fresh start accounting adjustments of $35.4 million as described in Note 3. Components of inventories follow (in millions):
| Successor |  |  | Predecessor
| September 30, 2014 |  |  | December 31, 2013
| Current Assets |  | Current Liabilities (a) |  | Inventories, Net |  |  | Current Assets |  | Current Liabilities (a) |  | Inventories, Net
Separative work units | $ | 412.6 |  |  | $ | 91.5 |  |  | $ | 321.1 |  |  |  | $ | 628.4 |  |  | $ | 200.0 |  |  | $ | 428.4 |
Uranium | 86.3 |  |  | 81.6 |  |  | 4.7 |  |  |  | 335.4 |  |  | 299.7 |  |  | 35.7 |
Materials and supplies | 0.5 |  |  | — |  |  | 0.5 |  |  |  | 3.8 |  |  | — |  |  | 3.8 |
| $ | 499.4 |  |  | $ | 173.1 |  |  | $ | 326.3 |  |  |  | $ | 967.6 |  |  | $ | 499.7 |  |  | $ | 467.9 |
(a) | Inventories owed to customers and suppliers, included in current liabilities, consist primarily of SWU and uranium inventories owed to fabricators.
Uranium Provided by Customers and Suppliers Centrus held uranium with estimated values of approximately $698 million at September 30, 2014, and $1.3 billion at December 31, 2013, to which title was held by customers and suppliers and for which no assets or liabilities were recorded on the balance sheet. The reduction reflects a 46% decline in quantities. Utility customers provide uranium to Centrus as part of their enrichment contracts. Title to uranium provided by customers generally remains with the customer until delivery of LEU at which time title to LEU is transferred to the customer, and title to uranium is transferred to Centrus.

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- Definition The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a, b, c -Article 5 + Details
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