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      <Label>New Accounting Pronouncements and Changes in Accounting Principles [Abstract]</Label>
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          <NonNumbericText>10. NEW ACCOUNTING STANDARDS AND INTERPRETATIONS
	FSP FAS 132 (R)-1 - "Employers' Disclosures about Postretirement Benefit Plan Assets"
In December 2008, the FASB issued Staff Position FAS 132(R)-1, which provides guidance on an employer's disclosures about assets of a defined benefit pension or other postretirement plan. Requirements of this FSP include disclosures about investment policies and strategies, categories of plan assets, fair value measurements of plan assets, and significant categories of risk. This FSP is effective for fiscal years ending after December 15, 2009. FirstEnergy will expand its disclosures related to postretirement benefit plan assets as a result of this FSP.
SFAS 166 - "Accounting for Transfers of Financial Assets - an amendment of FASB Statement No. 140"
In June 2009, the FASB issued SFAS 166, which amends the derecognition guidance in SFAS 140 and eliminates the concept of a qualifying special-purpose entity (QSPE). It removes the exception from applying FIN 46R to QSPEs and requires an evaluation of all existing QSPEs to determine whether they must be consolidated in accordance with SFAS 167. This Statement is effective for financial asset transfers that occur in fiscal years beginning after November 15, 2009. FirstEnergy does not expect this Standard to have a material effect upon its financial statements.
	SFAS 167 - "Amendments to FASB Interpretation No. 46(R)"

In June 2009, the FASB issued SFAS 167, which amends the consolidation guidance applied to VIEs. This Statement replaces the quantitative approach previously required to determine which entity has a controlling financial interest in a VIE with a qualitative approach. Under the new approach, the primary beneficiary of a VIE is the entity that has both (a) the power to direct the activities of the VIE that most significantly impact the entity's economic performance, and (b) the obligation to absorb losses of the entity, or the right to receive benefits from the entity, that could be significant to the VIE. SFAS 167 also requires ongoing reassessments of whether an entity is the primary beneficiary of a VIE and enhanced disclosures about an entity's involvement in VIEs. This Statement is effective for fiscal years beginning after November 15, 2009. FirstEnergy is currently evaluating the impact of adopting this Standard on its financial statements.
SFAS 168 - "The FASB Accounting Standards CodificationTM and the Hierarchy of Generally Accepted Accounting Principles - a replacement of FASB Statement No. 162"
In June 2009, the FASB issued SFAS 168, which recognizes the FASB Accounting Standards CodificationTM (Codification) as the source of authoritative GAAP. It also recognizes that rules and interpretative releases of the SEC under federal securities laws are sources of authoritative GAAP for SEC registrants. The Codification supersedes all non-SEC accounting and reporting standards. This Statement is effective for financial statements issued for interim and annual periods ending after September 15, 2009. This Statement will change how FirstEnergy references GAAP in its financial statement disclosures.</NonNumbericText>
          <NonNumericTextHeader>10. NEW ACCOUNTING STANDARDS AND INTERPRETATIONS
	FSP FAS 132 (R)-1 - "Employers' Disclosures about Postretirement Benefit Plan Assets"
In December 2008, the</NonNumericTextHeader>
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      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 154
 -Paragraph 2, 17, 18

Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher AICPA
 -Name Accounting Principles Board Opinion (APB)
 -Number 28
 -Paragraph 23, 24

Reference 3: http://www.xbrl.org/2003/role/presentationRef
 -Publisher SEC
 -Name Regulation S-X (SX)
 -Number 210
 -Section 01
 -Paragraph b
 -Subparagraph 6
 -Article 10

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