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v3.25.0.1

Revenue and Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended | 25 Months Ended | 72 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 | Oct. 31, 2022 | May 31, 2022 | Mar. 31, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2024 | Dec. 31, 2024 | Sep. 28, 2023 | Nov. 10, 2022
Revenue, nonmonetary transaction |  |  |  |  | $ 30.2 | $ 14.8 | $ 14.5 |  |  |  |
Deferred revenue, additions in period |  |  |  |  | 16.9 | 33.4 |  |  |  |  |
Deferred revenue, revenue recognized |  |  |  |  | 117.2 | 23.6 |  |  |  |  |
Separative work units borrowed in period, value |  | $ 10.4 | $ 8.5 | $ 9.4 |  |  |  |  |  |  |
Accounts receivable, net |  |  |  |  | 80.0 | 49.4 |  | $ 80.0 | $ 80.0 |  |
Revenue, remaining performance obligation, amount |  |  |  |  | 800.0 | 1,000.0 |  | 800.0 | 800.0 |  |
Deferred Revenue and Advances from Customers - Current and Noncurrent |  |  |  |  | 216.4 | 315.4 |  | 216.4 | 216.4 |  |
Contract with Customer, Advances, Liability |  |  |  |  | 32.8 | 63.0 |  | 32.8 | 32.8 |  |
Revenue |  |  |  |  | 442.0 | 320.2 | 293.8 |  |  |  |
Unrealized Gain (Loss), Foreign Currency Transaction, before Tax |  |  |  |  | (0.2) | 0.1 | 0.1 |  |  |  |
Phase 2 |  |  |  |  |  |  |  |  |  |  |
Contract Estimated Fee |  |  |  |  | 7.7 |  |  | 7.7 | 7.7 |  |
Contract Minimum Fee |  |  |  |  | 6.9 |  |  | 6.9 | 6.9 |  |
HALEU Ops Contract |  |  |  |  |  |  |  |  |  |  |
Cost obligated to DOE |  |  |  |  |  |  |  | 166.6 |  |  |
Total Amount Program Cost |  |  |  |  |  |  |  | 166.9 |  |  |
accrued loss | $ 21.3 |  |  |  |  |  |  |  |  |  |
Contract Value |  |  |  |  |  |  |  |  |  |  | $ 150.0
HALEU Ops Contract | Phase 2 |  |  |  |  |  |  |  |  |  |  |
Contract Value |  |  |  |  | 129.0 |  |  | 129.0 | 129.0 |  | 90.0
HALEU Ops Contract | Phase Scope |  |  |  |  |  |  |  |  |  |  |
Contract Value |  |  |  |  | 8.5 |  |  | 8.5 | 8.5 | $ 5.8 |
HALEU Demo Contract |  |  |  |  |  |  |  |  |  |  |
Contract Value |  |  |  |  | $ 173.0 |  |  | $ 173.0 | $ 173.0 |  |
Government cost share, percentage |  |  |  |  | 80.00% |  |  | 80.00% | 80.00% |  |
Revenue |  |  |  |  |  |  |  |  | $ 173.0 |  |
Maximum [Member] | HALEU Ops Contract | Phase 1 |  |  |  |  |  |  |  |  |  |  |
Government cost share portion |  |  |  |  |  |  |  |  |  |  | 30.0
Company cost share portion |  |  |  |  |  |  |  |  |  |  | $ 30.0
Government [Member] | HALEU Ops Contract |  |  |  |  |  |  |  |  |  |  |
Proceeds from Customers |  |  |  |  |  |  |  | $ 117.8 |  |  |
Provision for loss on contracts utilized |  |  |  |  | $ 0.0 | 20.0 | 1.3 |  |  |  |
Government [Member] | HALEU Demo Contract |  |  |  |  |  |  |  |  |  |  |
Proceeds from Customers |  |  |  |  |  |  |  |  | 171.2 |  |
Provision for loss on contracts utilized |  |  |  |  | 0.0 | 0.0 | $ 0.5 |  |  |  |
Low Enriched Uranium Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue, remaining performance obligation, amount |  |  |  |  | 700.0 | 1,000.0 |  | 700.0 | 700.0 |  |
Technical Solutions Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue, remaining performance obligation, amount |  |  |  |  | $ 28.0 | $ 77.0 |  | $ 28.0 | $ 28.0 |  |

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