XML 67 R23.htm IDEA: XBRL DOCUMENT
v3.20.1

Intangible Assets (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets and Excess Reorganization Value [Table Text Block] | Intangible asset balances are as follows (in millions):
| March 31, 2020 |  | December 31, 2019
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Amount
Sales order book | $ | 54.6 |  |  | $ | 30.1 |  |  | $ | 24.5 |  |  | $ | 54.6 |  |  | $ | 29.9 |  |  | $ | 24.7 |
Customer relationships | 68.9 |  |  | 25.3 |  |  | 43.6 |  |  | 68.9 |  |  | 24.1 |  |  | 44.8 |
Total | $ | 123.5 |  |  | $ | 55.4 |  |  | $ | 68.1 |  |  | $ | 123.5 |  |  | $ | 54.0 |  |  | $ | 69.5 |

X
- Definition Schedule of Intangible Assets and Excess Reorganization Value [Table Text Block] + References No definition available. + Details
Name: | leu_ScheduleofIntangibleAssetsandExcessReorganizationValueTableTextBlock
Namespace Prefix: | leu_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration