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Inventories | 3 Months Ended
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Mar. 31, 2023
Inventory, Net [Abstract] |
Inventories | INVENTORIES Centrus holds uranium at licensed locations (e.g., fabricators) or in transit in the form of natural uranium and as the uranium component of LEU. Centrus also holds SWU as the SWU component of LEU at licensed locations or in transit to meet book transfer requests by customers and suppliers. Fabricators process LEU into fuel for use in nuclear reactors. Components of inventories are as follows (in millions):
| March 31, 2023 |  | December 31, 2022
| Current Assets |  | Current Liabilities (a) |  | Inventories, Net |  | Current Assets |  | Current Liabilities (a) |  | Inventories, Net
Separative work units | $ | 25.9 |  |  | $ | — |  |  | $ | 25.9 |  |  | $ | 24.1 |  |  | $ | — |  |  | $ | 24.1 |
Uranium | 183.5 |  |  | 17.2 |  |  | 166.3 |  |  | 185.1 |  |  | 60.8 |  |  | 124.3 |
Total | $ | 209.4 |  |  | $ | 17.2 |  |  | $ | 192.2 |  |  | $ | 209.2 |  |  | $ | 60.8 |  |  | $ | 148.4 |
(a)This includes inventories owed to suppliers for advances of uranium. Inventories are valued at the lower of cost or net realizable value. The Company also may borrow SWU or uranium from customers or suppliers, in which case the Company will record the SWU and/or uranium and the related liability for the borrowing using a projected and forecasted purchase price over the borrowing period. In March 2023, the Company borrowed UF 6 which was recorded to inventory at a value of $22.5 million. The inventory value was recorded based on the estimated fair market value of the inventory on the date of borrowing. In March 2023, the Company performed a revaluation of the Long-Term Inventory Loans reflecting an updated projection of the timing and sources of inventory to be used for repayment. This revaluation was recorded to Cost of Sales and resulted in an increase of $2.1 million to the related liability. At March 31, 2023, the total liability of borrowed inventory was $83.2 million, of which $73.3 million was recorded in Long-Term Inventory Loans and $9.9 million was recorded in Accounts Payable and Accrued Liabilities. At December 31, 2022, the total liability of borrowed inventory was $58.6 million, of which $48.7 million was recorded in Long-Term Inventory Loans and $9.9 million was recorded in Accounts Payable and Accrued Liabilities.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI https://asc.fasb.org/topic&trid=2126998 + Details
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- References No definition available. + Details
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