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USD ($)

USD ($) / shares

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USD ($)

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USD ($)

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12/31/2010
USD ($)

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12/31/2009
USD ($)

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12/31/2008
USD ($)
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12/31/2007
USD ($)
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12/31/2010
USD ($)

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12/31/2009
USD ($)

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12/31/2008
USD ($)
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12/31/2007
USD ($)
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12/31/2010
USD ($)

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12/31/2009
USD ($)

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12/31/2008
USD ($)
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12/31/2007
USD ($)
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1/1/2008 - 12/31/2008
USD ($)

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12/31/2010
USD ($)

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12/31/2009
USD ($)

</KeyName><CurrencySymbol>$</CurrencySymbol><contextRef><ContextID>BalanceAsOf_31Dec2009_Jcp_And_L_Member</ContextID><EntitySchema>http://www.sec.gov/CIK</EntitySchema><EntityValue>0001031296</EntityValue><PeriodDisplayName /><PeriodType>instant</PeriodType><PeriodStartDate>2009-12-31T00:00:00</PeriodStartDate><PeriodEndDate>0001-01-01T00:00:00</PeriodEndDate><Segments><anyType xsi:type="Segment"><IsDefaultForEntity>false</IsDefaultForEntity><Name /><IsFromEntityGroup>false</IsFromEntityGroup><ValueName>JCP&amp;L [Member]</ValueName><ValueType>dei_LegalEntityAxis</ValueType><Namespace>xbrldi</Namespace><Schema>http://xbrl.org/2006/xbrldi</Schema><DimensionInfo><Id>fe_JcpAndLMember</Id><dimensionId>dei_LegalEntityAxis</dimensionId><type>explicitMember</type></DimensionInfo></anyType></Segments><Scenarios /></contextRef><UPS><UnitProperty><UnitID>USD</UnitID><UnitType>Standard</UnitType><StandardMeasure><MeasureSchema>http://www.xbrl.org/2003/iso4217</MeasureSchema><MeasureValue>USD</MeasureValue><MeasureNamespace>iso4217</MeasureNamespace></StandardMeasure><Scale>0</Scale></UnitProperty><UnitProperty><UnitID>Pure</UnitID><UnitType>Standard</UnitType><StandardMeasure><MeasureSchema>http://www.xbrl.org/2003/instance</MeasureSchema><MeasureValue>pure</MeasureValue><MeasureNamespace>xbrli</MeasureNamespace></StandardMeasure><Scale>0</Scale></UnitProperty></UPS><CurrencyCode>USD</CurrencyCode><OriginalCurrencyCode>USD</OriginalCurrencyCode></MCU><CurrencySymbol>$</CurrencySymbol><Labels><Label Id="1" Label="Dec. 31, 2009" /><Label Id="2" Label="JCP&amp;L [Member]" /></Labels></Column><Column><Id>19</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelColumn>false</LabelColumn><CurrencyCode>USD</CurrencyCode><FootnoteIndexer /><hasSegments>true</hasSegments><hasScenarios>false</hasScenarios><MCU><KeyName>{dei_LegalEntityAxis} : Met-Ed [Member]
1/1/2008 - 12/31/2008
USD ($)

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12/31/2010
USD ($)

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12/31/2009
USD ($)

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1/1/2008 - 12/31/2008
USD ($)

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12/31/2010
USD ($)

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12/31/2009
USD ($)

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/></contextRef><UPS><UnitProperty><UnitID>USD</UnitID><UnitType>Standard</UnitType><StandardMeasure><MeasureSchema>http://www.xbrl.org/2003/iso4217</MeasureSchema><MeasureValue>USD</MeasureValue><MeasureNamespace>iso4217</MeasureNamespace></StandardMeasure><Scale>0</Scale></UnitProperty><UnitProperty><UnitID>Pure</UnitID><UnitType>Standard</UnitType><StandardMeasure><MeasureSchema>http://www.xbrl.org/2003/instance</MeasureSchema><MeasureValue>pure</MeasureValue><MeasureNamespace>xbrli</MeasureNamespace></StandardMeasure><Scale>0</Scale></UnitProperty></UPS><CurrencyCode>USD</CurrencyCode><OriginalCurrencyCode>USD</OriginalCurrencyCode></MCU><CurrencySymbol>$</CurrencySymbol><Labels><Label Id="1" Label="Dec. 31, 2009" /><Label Id="2" Label="Penelec [Member]" 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/><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat><hasSegments>true</hasSegments><hasScenarios>false</hasScenarios></Cell><Cell><Id>5</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><NonNumericTextHeader /><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat><hasSegments>true</hasSegments><hasScenarios>false</hasScenarios></Cell><Cell><Id>6</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText /><NonNumericTextHeader /><FootnoteIndexer 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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 43

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period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 45
 -Subparagraph e(1)

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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 142
 -Paragraph 43

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