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Segment Information
 6 Months Ended
Jun. 30, 2025
Segment Reporting Information, Revenue for Reportable Segment [Abstract]  
Segment Information SEGMENT INFORMATION
Gross profit is the Company’s measure for segment reporting. There were no intersegment sales in the periods presented. Refer to Note 2, Revenue and Contracts with Customers, for additional details on revenue for each segment. The following table presents the Company’s segment information (in millions):
 Three Months Ended 
 June 30, 2025		Six Months Ended 
 June 30, 2025
2025202420252024
Revenue
LEU segment:
Separative work units$125.7 $139.7 $177.0 $163.3 
Uranium— 29.9 — 29.9 
Intersegment revenue, eliminated on consolidation
6.1 — 6.1 — 
Total131.8 169.6 183.1 193.2 
Technical Solutions segment28.8 19.4 50.6 39.5 
Total160.6 189.0 $233.7 $232.7 
Elimination of intersegment revenue
(6.1)— (6.1)— 
Total revenue$154.5 $189.0 $227.6 $232.7 
Cost of Sales
LEU segment:
Separative work units and uranium
$75.0 $136.6 $95.1 $159.7 
Intersegment cost of sales, eliminated on consolidation
4.3 — 4.3 — 
Total79.3 136.6 99.4 159.7 
Technical Solutions segment
25.6 15.9 45.7 32.2 
Total104.9 152.5 145.1 191.9 
Elimination of intersegment cost of sales
(4.3)— (4.3)— 
Total cost of sales$100.6 $152.5 $140.8 $191.9 
Segment Gross Profit
LEU segment:
LEU segment$50.7 $33.0 $81.9 $33.5 
Intersegment gross profit, eliminated on consolidation
1.8 — 1.8 — 
Total
52.5 33.0 83.7 33.5 
Technical Solutions segment:
Technical Solutions
3.2 3.5 4.9 7.3 
Total
3.2 3.5 4.9 7.3 
Elimination of intersegment gross profit
(1.8)— (1.8)— 
Gross profit$53.9 $36.5 $86.8 $40.8 
Reconciliation to Income before income taxes
Advanced technology costs$3.3 $4.1 $6.3 $9.8 
Selling, general and administrative9.2 7.1 17.0 15.0 
Stock compensation
4.2 0.5 4.7 0.7 
Amortization of intangible assets3.7 3.7 4.8 4.8 
Nonoperating components of net periodic benefit loss1.0 (16.3)1.9 (16.2)
Interest expense3.1 0.3 6.5 0.7 
Investment income(8.0)(2.4)(15.3)(5.2)
Extinguishment of long-term debt— — (11.8)— 
Other expense, net— — 0.1 0.1 
Income before income taxes$37.4 $39.5 $72.6 $31.1 
The Company’s total assets are not presented for each reportable segment as they are not reviewed by, nor otherwise regularly provided to the chief operating decision maker (“CODM”), the CEO. The CODM uses revenue, cost of sales and gross profit to allocate resources (including personnel and financial or capital resources) for each segment, predominantly in the annual budget and quarterly financial review and forecasting process. The CODM considers budget-to-actual variances on a quarterly basis using revenue, cost of sale and gross profit when making decisions about allocating capital and personnel to the segments. Centrus’ long-term or long-lived assets, which include property, plant and equipment and other assets reported on the Consolidated Balance Sheet, were located in the United States as of June 30, 2025 and December 31, 2024.

Revenue from Major Customers (10% or More of Total Revenue)

In the three months ended June 30, 2025, three customers in the LEU segment individually represented $35.7 million, $32.8 million, and $19.9 million of revenue, respectively. In the six months ended June 30, 2025, three customers in the LEU segment individually represented $67.5 million, $35.7 million, and $32.8 million of revenue, respectively. One customer in the Technical Solutions segment individually represented $27.9 million and $49.6 million of revenue in the three and six months ended June 30, 2025, respectively.
In both the three and six months ended June 30, 2024, four customers in the LEU segment individually represented $42.3 million, $35.4 million, $34.5 million, and $30.2 million of revenue, respectively. One customer in the Technical Solutions segment individually represented $18.9 million and $38.7 million of revenue in the three and six months ended June 30, 2024, respectively.