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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue [abstract] |
Revenue - Disaggregation |
| Uranium | Fuel services | Other | Total
Customer geographical region |  |  |  |  |  |  |  |
Americas | $ | 588,827 | $ | 206,011 | $ | 7,676 | $ | 802,514
Europe |  | 323,565 |  | 123,864 |  | 3,331 |  | 450,760
Asia |  | 499,378 |  | 47,421 |  | - |  | 546,799
| $ | 1,411,770 | $ | 377,296 | $ | 11,007 | $ | 1,800,073
Contract type |  |  |  |  |  |  |  |
Fixed-price | $ | 406,021 | $ | 355,552 | $ | 7,686 | $ | 769,259
Market-related |  | 1,005,749 |  | 21,744 |  | 3,321 |  | 1,030,814
| $ | 1,411,770 | $ | 377,296 | $ | 11,007 | $ | 1,800,073
| Uranium | Fuel services | Other | Total
Customer geographical region |  |  |  |  |  |  |  |
Americas | $ | 569,535 | $ | 206,226 | $ | 59,300 | $ | 835,061
Europe |  | 288,134 |  | 79,629 |  | 3,587 |  | 371,350
Asia |  | 556,140 |  | 84,422 |  | 15,952 |  | 656,514
| $ | 1,413,809 | $ | 370,277 | $ | 78,839 | $ | 1,862,925
Contract type |  |  |  |  |  |  |  |
Fixed-price | $ | 349,021 | $ | 305,383 | $ | 69,703 | $ | 724,107
Market-related |  | 1,064,788 |  | 64,894 |  | 9,136 |  | 1,138,818
| $ | 1,413,809 | $ | 370,277 | $ | 78,839 | $ | 1,862,925
Revenue - Contract liabilities |
|  | 2020 |  | 2019
Beginning of year | $ | 17,418 | $ | 30,727
Additions |  | 6,994 |  | 9,783
Recognized in revenue |  | (10,026) |  | (23,067)
Effect of movements in exchange rates |  | (4) |  | (25)
End of year | $ | 14,382 | $ | 17,418
Revenue - Remaining performance obligations |
|  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | Thereafter |  | Total
Uranium | $ | 243,069 | $ | 189,351 | $ | 179,212 | $ | 166,581 | $ | 129,450 | $ | 416,947 | $ | 1,324,610
Fuel services |  | 319,851 |  | 272,920 |  | 212,655 |  | 215,729 |  | 216,250 |  | 677,611 |  | 1,915,016
Other |  | 4,212 |  | - |  | - |  | - |  | - |  | - |  | 4,212
Total | $ | 567,132 | $ | 462,271 | $ | 391,867 | $ | 382,310 | $ | 345,700 | $ | 1,094,558 | $ | 3,243,838

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