XML 38 R46.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Pension and Postretirement Health and Life Benefits (Narrative) (Details) (Scenario, Forecast [Member], USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2015
Scenario, Forecast [Member] |
Expected defined benefit plan contributions for next fiscal year for non-qualified plans | $ 9.7 leu_Expecteddefinedbenefitplancontributionsfornextfiscalyearfornonqualifiedplans / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember

X
- Definition Expected defined benefit plan contributions for next fiscal year for non-qualified plans + References No definition available. + Details
Name: | leu_Expecteddefinedbenefitplancontributionsfornextfiscalyearfornonqualifiedplans
Namespace Prefix: | leu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration