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Inventories
 6 Months Ended
Jun. 30, 2022
Inventory, Net [Abstract]  
Inventories INVENTORIES
Centrus holds uranium at licensed locations 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 (e.g., fabricators) 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):
 June 30, 2022December 31, 2021
 Current
Assets		Current
Liabilities
(a)		Inventories, NetCurrent
Assets		Current
Liabilities
(a)		Inventories, Net
Separative work units$11.7 $— $11.7 $8.8 $— $8.8 
Uranium109.4 0.3 109.1 82.3 8.4 73.9 
Total$121.1 $0.3 $120.8 $91.1 $8.4 $82.7 

(a)Inventories owed to customers and suppliers include SWU and uranium owed to fabricators.

Inventories are valued at the lower of cost or net realizable value. There were no valuation adjustments in the three and six months ended June 30, 2022 and 2021.
The Company may also 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 and May 2022, the Company borrowed SWU which was recorded to inventory at a value of $9.4 million and $8.5 million, respectively. The inventory value was calculated based on the anticipated sourcing of inventory for repayment at the date of acquisition. In June 2022, 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 $5.5 million to the related liability.