2.0.0.10 false INTANGIBLE ASSETS 006130 - Disclosure - INTANGIBLE ASSETS true false false false 1 usd $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u001 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 2 Notes to Financial Statements [Abstract] 0 fe_NotesToFinancialStatementsAbstract fe false na duration string No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false No definition available. false 3 INTANGIBLE ASSETS 1 us-gaap_IntangibleAssetsDisclosureTextBlock us-gaap true na duration string No definition available. false false false false false false false false false false false label false 1 false false false false 0 0 <br /><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 9pt; FONT-FAMILY: Arial">13. INTANGIBLE ASSETS</font></div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 9pt; FONT-FAMILY: Arial"></font><br /> </div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 9pt; FONT-FAMILY: Arial">FES has acquired certain customer contract rights, which were capitalized as intangible assets.  These rights allow FES to supply electric generation needs to customers and are being amortized ratably over the term of the related contracts.  Net intangible assets of $114 million are included in other assets on the FirstEnergy Consolidated Balance Sheet as of March 31, 2010.</font></div><div style="DISPLAY: block; TEXT-INDENT: 0pt"><br /></div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 9pt; FONT-FAMILY: Arial">For the three months ended March 31, 2010, amortization expense was approximately $3 million.</font></div><div style="DISPLAY: block; TEXT-INDENT: 0pt"><br /></div> 13. INTANGIBLE ASSETS FES has acquired certain customer contract rights, which were capitalized as intangible assets.  These rights allow FES to false false false This block of text may be used to disclose all or part of the information related to intangible assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44, 45, 46 false false 1 2 false UnKnown UnKnown UnKnown false true