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Segment Information | 12 Months Ended
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Dec. 31, 2020
Segment Reporting Information, Revenue for Reportable Segment [Abstract] |
Segment Information | REVENUE BY GEOGRAPHIC AREA, MAJOR CUSTOMERS AND SEGMENT INFORMATION Revenue by customer location, including customers in a foreign country representing 10% or more of total revenue, follows (in millions):
| Year Ended December 31,
| 2020 |  | 2019
United States | $ | 171.7 |  |  | $ | 152.4 |
Foreign: |  |  |
Belgium | 35.8 |  |  | 21.5 |
Japan | 23.4 |  |  | 23.4 |
Other | 16.3 |  |  | 12.4 |
Total foreign | 75.5 |  |  | 57.3 |
Total revenue | $ | 247.2 |  |  | $ | 209.7 |
* less than 10% |  |  |
The U.S. government and its contractors, in the Company’s technical solutions segment, represented approximately 21% of total revenue in 2020 and 19% in 2019. The ten largest customers in the Company’s LEU segment represented approximately 71% of total revenue in 2020. Revenue from Synatom, Energy Harbor Nuclear Corp. and Dominion Energy South Carolina represented approximately 14%, 13% and 10%, respectively, of total revenue in 2020. In 2019, the ten largest customers in the Company’s LEU segment represented approximately 79% of total revenue. Revenue from Florida Power and Light, Dominion Energy South Carolina, Tohoku Electric Power Company, Inc. and Synatom represented approximately 27%, 12%, 11%, 10%, respectively, of total revenue in 2019. No other customer represented more than 10% of total revenue in 2020 or 2019. Centrus has two reportable segments: the LEU segment with two components, SWU and uranium, and the technical solutions segment. The LEU segment includes sales of the SWU component of LEU, sales of both the SWU and uranium components of LEU, and sales of uranium. The technical solutions segment includes revenue and cost of sales for work that Centrus performs under the HALEU Contract. The technical solutions segment also includes limited services provided by Centrus to DOE and its contractors at the Piketon facility. Gross profit is Centrus’ measure for segment reporting. There were no intersegment sales in the periods presented. The following table presents the Company’s segment information (in millions):
| Year Ended December 31,
| 2020 |  | 2019
Revenue |  |  |
LEU segment: |  |  |
Separative work units | $ | 151.5 |  |  | $ | 123.7 |
Uranium | 39.0 |  |  | 45.7 |
Total | 190.5 |  |  | 169.4 |
Technical solutions segment | 56.7 |  |  | 40.3 |
Total revenue | $ | 247.2 |  |  | $ | 209.7 |
Segment Gross Profit (Loss) |  |  |
LEU segment | $ | 97.8 |  |  | $ | 50.8 |
Technical solutions segment | (0.2) |  |  | (18.3) |
Gross profit | $ | 97.6 |  |  | $ | 32.5 |
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. 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 December 31, 2020, and December 31, 2019.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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