2.2.0.7 false Intangible Assets 00214 - Disclosure - Intangible Assets true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Tons Standard http://firstenergycorp.com/20100331 tons fe 0 Percent Standard http://www.xbrl.org/2003/instance pure xbrli 0 kV Standard http://firstenergycorp.com/20100331 kV fe 0 Customers Standard http://firstenergycorp.com/20100331 Customers fe 0 Days Standard http://firstenergycorp.com/20100331 Days fe 0 EPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Finite Lived Intangible Assets Abstract 0 us-gaap_FiniteLivedIntangibleAssetsAbstract us-gaap true na duration 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 xbrli:stringItemType string No definition available. false 3 INTANGIBLE ASSETS 1 us-gaap_IntangibleAssetsDisclosureTextBlock us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 13. INTANGIBLE ASSETS 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 the recorded value is being amortized ratably over the term of the related contracts. Net intangible assets of $118 million are included in other assets on FirstEnergy's Consolidated Balance Sheet as of June 30, 2010. For the three and six months ended June 30, 2010, amortization expense was approximately $3 million and $5 million, respectively. 13. INTANGIBLE ASSETS FES has acquired certain customer contract rights, which were capitalized as intangible assets. These rights allow FES to supply false false false us-types:textBlockItemType textblock 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 1 2 false UnKnown UnKnown UnKnown false true