Reduced parental guarantee. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Current weighted average variable rate of interest rate swaps. No authoritative reference available. Infrastructure and energy projects. No authoritative reference available. No authoritative reference available. No authoritative reference available. Periodic pension costs allocated to parent and subsidairies. No authoritative reference available. Approximate fair value and related carrying amounts of notes receivable. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Utilities Required to Reduce Peak Demand From 2010 To 2018 in percentage No authoritative reference available. Deferral Of Regulatory Asset. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Assets and Liabilities Measured on Recurring Basis. No authoritative reference available. Generation discount for low income customers. No authoritative reference available. No authoritative reference available. No authoritative reference available. Change resulted from decrease related to current hedging activity, Net of tax. No authoritative reference available. June fixed-for-floating interest rateswap agreements execution notional amount. No authoritative reference available. No authoritative reference available. No authoritative reference available. Portion held by stockholders of subsidiary company in combined entity No authoritative reference available. Fair value of commodity derivatives. No authoritative reference available. Basis Of Presentation TextBlock. No authoritative reference available. No authoritative reference available. No authoritative reference available. Responsive comments in days. No authoritative reference available. No authoritative reference available. No authoritative reference available. Decrease net income due to increase in interest rates associated with variable-rate debt. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Net of tax decrease due to adverse change in commodity prices. No authoritative reference available. FirstEnergy Solutions Corp Condensed Consolidating Balance Sheets Text Block. No authoritative reference available. Arbitration panel issued an opinion to award. No authoritative reference available. Accrued interest allocation for July termination. No authoritative reference available. Proposed greenhouse gas emissions reduction by 2050. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Additional FES collateral payments. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Funds provided over the next three years. No authoritative reference available. Megawatts of net demonstrated capacity of competitive segment. No authoritative reference available. No authoritative reference available. No authoritative reference available. Previously estimated decommissioning costs. No authoritative reference available. ffect of derivative instruments on statements of income and comprehensive income for instruments not in hedging relationships text block. No authoritative reference available. No authoritative reference available. No authoritative reference available. Regulatory asset impairment related to ESP. No authoritative reference available. No authoritative reference available. No authoritative reference available. Surety bonds and lines of credit. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Decrease in the amount recovered for the costs incurred. No authoritative reference available. No authoritative reference available. No authoritative reference available. Costs avoided by customers. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Net of tax change increase related to current hedging activity. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Transition bonds sold to securitize the recovery of subsidiary five bondable stranded costs, amount. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Variable interest entities net present value of parent company consolidated sale and leaseback operating lease commitments. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Minimum reduction in Utilities peak demand. No authoritative reference available. Unamortized losses associated with prior interest rate hedges net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. Property taxes. No authoritative reference available. Accrued interest allocation for May termination. No authoritative reference available. Losses to be amortized to interest expenses during next tweleve months. No authoritative reference available. No authoritative reference available. No authoritative reference available. Merger transactions costs, Net of tax. No authoritative reference available. long-term debt and other long-term obligations. No authoritative reference available. Assessment period costs. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Reply comments in days. No authoritative reference available. Leasehold improvement payments to associated companies. No authoritative reference available. Decrease net income due to adverse change in commodity prices. No authoritative reference available. No authoritative reference available. No authoritative reference available. NDT interest and dividend income. No authoritative reference available. No authoritative reference available. No authoritative reference available. Capping of SO2 emissions. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Liabilities Net Value. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Variable Interest Entities Net Exposure. No authoritative reference available. No authoritative reference available. No authoritative reference available. Property taxes. No authoritative reference available. Reconciliation of changes in the fair value of Nug contracts. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Increase electric distribution rates. No authoritative reference available. Capping of NOx emissions. No authoritative reference available. Shareholder value at merger agreement date. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Additional contribution to trust. No authoritative reference available. No authoritative reference available. No authoritative reference available. Long Term Contract For Purchase of Electric Power Cost Incurred. No authoritative reference available. Capping of SO2 emissions under Clean Air Transport Rules. No authoritative reference available. No authoritative reference available. No authoritative reference available. Total annual energy savings. No authoritative reference available. No authoritative reference available. No authoritative reference available. Parental guarantee associated with the funding of decommissioning costs. No authoritative reference available. Supplemental Guarantor Information Disclosure Text Block. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Cash proceeds received of May termination. No authoritative reference available. Fair value and related carrying amounts of long-term debt and other long-term obligations. No authoritative reference available. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Liabilities Net Unrealized Gains Losses. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Variable interest entities distributions to owners. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Additional collateral payments on parental guarantees. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Electricity production from renewable sources. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Former ownership of Subsidiary in Work Unit. No authoritative reference available. Investments not required to be disclosed. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Percent change in confidence level over one year. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Weighted average fixed interest rate of interest of interest rate swaps. No authoritative reference available. No authoritative reference available. No authoritative reference available. Cash balance exculded from available for sale securities. No authoritative reference available. No authoritative reference available. No authoritative reference available. The gains and losses from increase (decrease) in fair value of dervatives included in earnings. No authoritative reference available. Periodic postretirement benefit costs allocated to parent and subsidairies. No authoritative reference available. Revised decommisioning costs. No authoritative reference available. FirstEnergy Solutions Corp Condensed Consolidating Statements Of Cash Flows. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Notional value of Terminated forward swaps. No authoritative reference available. Investments excludes Receivables, Payables and Accrued income. No authoritative reference available. Right to receive portion of a share of common stock of parent company. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Derivative instruments gain loss net reclassified. No authoritative reference available. No authoritative reference available. No authoritative reference available. Volume Of Derivatives Sales. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Outstanding guarantees related to energy and energy related contracts. No authoritative reference available. Cap-and-trade program to reduce mercury emissions after nine years. No authoritative reference available. Fund to assist low income customers. No authoritative reference available. Cash Collateral Net. No authoritative reference available. FirstEnergy Solutions Corp Condensed Consolidating Statements of Income. No authoritative reference available. Minimum reduction in Utilities reduce energy consumption. No authoritative reference available. Fair Value Liabilities Measured On Recurring Basis. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Recognized tax benefits. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Uppper threshold limit for carbon di oxide emission. No authoritative reference available. Environmental Remediation Liabilities Accrued. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Utilities required to reduce peak demand in 2009 in percentage. No authoritative reference available. Notice letter, required. No authoritative reference available. No authoritative reference available. No authoritative reference available. July notional amount of terminated fixed-for-floating interest rate swap agreements. No authoritative reference available. No authoritative reference available. No authoritative reference available. Deferred accumulated cost, total. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Total Capitalization. No authoritative reference available. Total unamortized losses included in AOCL associated with commodity derivatives, Net of tax. No authoritative reference available. No authoritative reference available. No authoritative reference available. Discounted Lease Payments, net. No authoritative reference available. Debt underlying the June fixed-for-floating interest rate swap agreements execution. No authoritative reference available. No authoritative reference available. No authoritative reference available. Unamortized sale and leaseback costs. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Consolidation Of Subsidiaries Text Block. No authoritative reference available. Proceeds from the sale of investments in available-for-sale securities, realized gains and losses on those sales, and interest and dividend income. No authoritative reference available. Hypothetical increase in the interest rates. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Net deferred losses on derivative instruments in accumulated other comprehensive losses after tax to be reclassified to earnings. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Number of generating facilities owned or leased by competitive segment. No authoritative reference available. Pension benefit costs (including amounts capitalized). No authoritative reference available. Net underpayments. No authoritative reference available. No authoritative reference available. No authoritative reference available. Number of long term power purchase agreements maintained by parent company with Non utility generation entities. No authoritative reference available. No authoritative reference available. No authoritative reference available. Shareholder value at effectiveness date. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Volume Of Parent Company's Outstanding Derivative Transactions. No authoritative reference available. Underpayment by PJM 2005 - 2007. No authoritative reference available. Volume Of Derivatives Purchases. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Regional allocation of costs. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Updated estimated decommissioning costs. No authoritative reference available. No authoritative reference available. No authoritative reference available. Net exposure to loss based upon the casualty value provisions. No authoritative reference available. No authoritative reference available. No authoritative reference available. Deferred Rents And Lease Market Valuation Liability. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Fair value of interest rate swaps. No authoritative reference available. No authoritative reference available. No authoritative reference available. Projected Transmission Cost. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Environmental remediation accrued liabilities. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Power purchase contract liability. No authoritative reference available. No authoritative reference available. No authoritative reference available. Net Plant Excluding Construction Work In Progress. No authoritative reference available. Market flow generators. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Derivatives and Hedging Topic policy Text Block. No authoritative reference available. unamortized losses included in AOCL associated with commodity derivatives. No authoritative reference available. No authoritative reference available. No authoritative reference available. Effect of derivative instruments on statements of income and comprehensive income for instruments designated in cash flow hedging relationships text block. No authoritative reference available. No authoritative reference available. No authoritative reference available. Cap-and-trade program to reduce mercury emissions after one year. No authoritative reference available. PUCO review of MRO in days. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Outstanding collateral payments. No authoritative reference available. No authoritative reference available. No authoritative reference available. New Voltage transmission facilities and zonal transmission rate. No authoritative reference available. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Liabilities Net Purchases Sales Issuances Settlements. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Other postretirement benefit costs (including amounts capitalized). No authoritative reference available. Accumulated Provision For Uncollectible Accounts Other. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Number of square miles in service territories in Ohio Pennsylvania and New Jersey. No authoritative reference available. Collateral has been posted related to fair value of credit related contingent features. No authoritative reference available. No authoritative reference available. No authoritative reference available. Tax benefits favorably affecting effective tax rate. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Expected adverse change in quoted market prices derivative instruments. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Funds provided by 2020. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Reconciliation of Basic and Diluted Earnings per Share. . No authoritative reference available. Investment in associated companies. No authoritative reference available. Fair Value Assets Measured On Recurring Basis. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Volume Of Derivatives Net. No authoritative reference available. Sale and leaseback transactions of undivided interest. No authoritative reference available. Surety bonds and related guarantees. No authoritative reference available. No authoritative reference available. No authoritative reference available. Surplus Margin Guaranty. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Cash proceeds received of July termination. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Interest expense to affiliates No authoritative reference available. Number of customers served by utility operating companies. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. No authoritative reference available. Unamortized losses associated with prior interest rate hedges. No authoritative reference available. Underpayment by PJM 2007 - 2009 No authoritative reference available.