$FE
FirstEnergy Corp Stock $fe

$fe Overview Financials Valuation SEC Filings Company Website

2016 Q4 Form 10-K Financial Statement

#000103129618000015 Filed on February 20, 2018

Income Statement

Concept	2016 Q4	2016 Q3	2016 Q2
Revenue	$3.375B	$3.917B	$3.401B
YoY Change	-4.69%	-5.0%	-1.85%
Cost Of Revenue	$318.0M	$979.0M	$889.0M
YoY Change	-68.42%	-19.02%	-10.11%
Gross Profit	-$805.0M	$2.938B	$2.512B
YoY Change	-131.77%	0.82%	1.45%
Gross Profit Margin	-23.85%	75.01%	73.86%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$339.0M	$311.0M	$334.0M
YoY Change	8.31%	-5.18%	3.73%
% of Gross Profit		10.59%	13.3%
Operating Expenses	-$2.095B	$2.093B	$2.110B
YoY Change	-203.56%	1.45%	10.18%
Operating Profit	-$8.924B	$861.0M	-$975.0M
YoY Change	-3881.36%	-5.18%	-275.99%
Interest Expense	-$209.0M	$286.0M	$289.0M
YoY Change	-17.39%	0.35%	2.48%
% of Operating Profit		33.22%
Other Income/Expense, Net	$44.00M	-$230.0M	-$244.0M
YoY Change	-650.0%	-19.86%	-3.17%
Pretax Income	-$9.185B	$631.0M	-$1.219B
YoY Change	2219.44%	1.61%	-503.64%
Income Tax	-$3.389B	$251.0M	-$130.0M
% Of Pretax Income		39.78%
Net Earnings	-$5.796B	$380.0M	-$1.089B
YoY Change	2464.6%	-3.8%	-682.35%
Net Earnings / Revenue	-171.73%	9.7%	-32.02%
Basic Earnings Per Share	-$13.44	$0.89	-$2.56
Diluted Earnings Per Share	-$13.44	$0.89	-$2.56
COMMON SHARES
Basic Shares Outstanding		425.0M shares	425.0M shares
Diluted Shares Outstanding		427.0M shares	425.0M shares

Balance Sheet

Concept	2016 Q4	2016 Q3	2016 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$199.0M	$551.0M	$199.0M
YoY Change	51.91%	540.7%	111.7%
Cash & Equivalents	$199.0M	$551.0M	$199.0M
Short-Term Investments
Other Short-Term Assets	$158.0M	$156.0M	$163.0M
YoY Change	-5.39%	-8.77%	-1.81%
Inventory	$564.0M	$699.0M	$759.0M
Prepaid Expenses
Receivables	$1.440B	$1.470B	$1.341B
Other Receivables	$175.0M	$159.0M	$153.0M
Total Short-Term Assets	$2.950B	$3.480B	$3.076B
YoY Change	-2.96%	-9.21%	-25.21%
LONG-TERM ASSETS
Property, Plant & Equipment	$29.39B	$37.83B	$37.46B
YoY Change	-21.03%	3.34%	2.87%
Goodwill	$5.618B	$5.618B	$5.618B
YoY Change	-12.46%	-12.46%	-12.46%
Intangibles
YoY Change
Long-Term Investments	$512.0M	$533.0M	$527.0M
YoY Change	1.19%	-39.09%	-40.52%
Other Assets	$1.153B	$907.0M	$1.076B
YoY Change	-10.34%	-25.53%	-17.29%
Total Long-Term Assets	$7.785B	$7.613B	$7.881B
YoY Change	-14.0%	-16.03%	-14.73%
TOTAL ASSETS
Total Short-Term Assets	$2.950B	$3.480B	$3.076B
Total Long-Term Assets	$7.785B	$7.613B	$7.881B
Total Assets	$43.15B	$51.96B	$51.40B
YoY Change	-17.17%	0.06%	-1.48%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.043B	$944.0M	$938.0M
YoY Change	-2.98%	-5.03%	-9.28%
Accrued Expenses	$363.0M	$365.0M	$341.0M
YoY Change	8.68%	5.8%	5.57%
Deferred Revenue
YoY Change
Short-Term Debt	$2.675B	$2.975B	$2.925B
YoY Change	56.62%	53.91%	0.58%
Long-Term Debt Due	$1.685B	$1.216B	$1.327B
YoY Change	44.51%	5.92%	2.71%
Total Short-Term Liabilities	$7.126B	$7.043B	$6.759B
YoY Change	27.2%	19.86%	-0.44%
LONG-TERM LIABILITIES
Long-Term Debt	$18.19B	$18.53B	$18.35B
YoY Change	-4.75%	-2.94%	-1.2%
Other Long-Term Liabilities	$1.547B	$1.269B	$1.419B
YoY Change	-0.51%	6.55%	3.35%
Total Long-Term Liabilities	$11.59B	$14.88B	$14.89B
YoY Change	-22.59%	-1.21%	-1.51%
TOTAL LIABILITIES
Total Short-Term Liabilities	$7.126B	$7.043B	$6.759B
Total Long-Term Liabilities	$11.59B	$14.88B	$14.89B
Total Liabilities	$18.72B	$21.93B	$21.65B
YoY Change	-9.03%	4.7%	-1.18%
SHAREHOLDERS EQUITY
Retained Earnings	-$4.532B	$1.264B	$1.190B
YoY Change	-300.89%	-49.07%	-50.23%
Common Stock	$10.56B	$10.01B	$9.984B
YoY Change	6.06%	0.87%	0.9%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.241B	$11.50B	$11.41B
YoY Change
Total Liabilities & Shareholders Equity	$43.15B	$51.96B	$51.40B
YoY Change	-17.17%	-1.33%	-3.03%

Cashflow Statement

Concept	2016 Q4	2016 Q3	2016 Q2
OPERATING ACTIVITIES
Net Income	-$5.796B	$380.0M	-$1.089B
YoY Change	2464.6%	-3.8%	-682.35%
Depreciation, Depletion And Amortization	$339.0M	$311.0M	$334.0M
YoY Change	8.31%	-5.18%	3.73%
Cash From Operating Activities	$791.0M	$1.120B	$822.0M
YoY Change	-30.8%	-15.6%	3.14%
INVESTING ACTIVITIES
Capital Expenditures	-$716.0M	-$671.0M	-$833.0M
YoY Change	-6.77%	23.57%	-2.57%
Acquisitions
YoY Change
Other Investing Activities	-$110.0M	-$38.00M	-$69.00M
YoY Change	64.18%	-25.49%	-23.33%
Cash From Investing Activities	-$826.0M	-$709.0M	-$902.0M
YoY Change	-1.08%	19.36%	-4.55%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-338.0M	-59.00M	133.0M
YoY Change	28.52%	-92.04%	-12.5%
NET CHANGE
Cash From Operating Activities	791.0M	1.120B	822.0M
Cash From Investing Activities	-826.0M	-709.0M	-902.0M
Cash From Financing Activities	-338.0M	-59.00M	133.0M
Net Change In Cash	-373.0M	352.0M	53.00M
YoY Change	-928.89%	-4500.0%	1225.0%
FREE CASH FLOW
Cash From Operating Activities	$791.0M	$1.120B	$822.0M
Capital Expenditures	-$716.0M	-$671.0M	-$833.0M
Free Cash Flow	$1.507B	$1.791B	$1.655B
YoY Change	-21.14%	-4.22%	0.18%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017	dei	Amendment Flag AmendmentFlag	false
CY2017	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	10-K
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0001031296
CY2018Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	475589829	shares
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017Q2	dei	Entity Public Float EntityPublicFloat	12919874051	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	FIRSTENERGY CORP
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2017Q4	fe	Adverse Percentage Change In Quoted Market Prices Derivative Instruments AdversePercentageChangeInQuotedMarketPricesDerivativeInstruments	-0.1
CY2016Q4	fe	Adverse Power Contract Liability AdversePowerContractLiability	162000000	USD
CY2017Q4	fe	Adverse Power Contract Liability AdversePowerContractLiability	130000000	USD
CY2017	fe	Aggregate Amountof Capacity AggregateAmountofCapacity	16000	MW
CY2015	fe	Book Income Before Provision For Income Taxes BookIncomeBeforeProvisionForIncomeTaxes	893000000	USD
CY2016	fe	Book Income Before Provision For Income Taxes BookIncomeBeforeProvisionForIncomeTaxes	-9232000000	USD
CY2017	fe	Book Income Before Provision For Income Taxes BookIncomeBeforeProvisionForIncomeTaxes	-829000000	USD
CY2016Q4	fe	Cash Receivables Payables Deferred Taxes Accrued Income Balance Excluded From Available For Sale Securities CashReceivablesPayablesDeferredTaxesAccruedIncomeBalanceExcludedFromAvailableForSaleSecurities	61000000	USD
CY2017Q4	fe	Cash Receivables Payables Deferred Taxes Accrued Income Balance Excluded From Available For Sale Securities CashReceivablesPayablesDeferredTaxesAccruedIncomeBalanceExcludedFromAvailableForSaleSecurities	87000000	USD
CY2017	fe	Commitment Proposed Regulation Waste Water Discharge Permit Renewal Cycle CommitmentProposedRegulationWasteWaterDischargePermitRenewalCycle	P5Y
CY2017	fe	Coverage Of Decontamination Costs As Per Property Damage Insurance CoverageOfDecontaminationCostsAsPerPropertyDamageInsurance	2750000000	USD
CY2016Q4	fe	Debt Instrument Unamortized Merger Fair Value Adjustments DebtInstrumentUnamortizedMergerFairValueAdjustments	-6000000	USD
CY2017Q4	fe	Debt Instrument Unamortized Merger Fair Value Adjustments DebtInstrumentUnamortizedMergerFairValueAdjustments	-14000000	USD
CY2017	fe	Decrease Net Income Due To Change In Commodity Prices DecreaseNetIncomeDueToChangeInCommodityPrices	-6000000	USD
CY2016Q4	fe	Deferred Tax Assets Liabilities Net Asset Retirement Obligation Liability DeferredTaxAssetsLiabilitiesNetAssetRetirementObligationLiability	669000000	USD
CY2017Q4	fe	Deferred Tax Assets Liabilities Net Asset Retirement Obligation Liability DeferredTaxAssetsLiabilitiesNetAssetRetirementObligationLiability	453000000	USD
CY2016Q4	fe	Deferred Tax Assets Liabilities Net Non Current All Other DeferredTaxAssetsLiabilitiesNetNonCurrentAllOther	-36000000	USD
CY2017Q4	fe	Deferred Tax Assets Liabilities Net Non Current All Other DeferredTaxAssetsLiabilitiesNetNonCurrentAllOther	94000000	USD
CY2016Q4	fe	Deferred Tax Assets Liabilities Net Non Current Deferred Sale And Leaseback Gain DeferredTaxAssetsLiabilitiesNetNonCurrentDeferredSaleAndLeasebackGain	351000000	USD
CY2017Q4	fe	Deferred Tax Assets Liabilities Net Non Current Deferred Sale And Leaseback Gain DeferredTaxAssetsLiabilitiesNetNonCurrentDeferredSaleAndLeasebackGain	231000000	USD
CY2016Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	-438000000	USD
CY2017Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	-580000000	USD
CY2016Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forwards And Tax Credits DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardsAndTaxCredits	2251000000	USD
CY2017Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forwards And Tax Credits DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardsAndTaxCredits	1467000000	USD
CY2016Q4	fe	Deferred Tax Assets Liabilities Net Non Current Nuclear Decommissioning Activities DeferredTaxAssetsLiabilitiesNetNonCurrentNuclearDecommissioningActivities	-635000000	USD
CY2017Q4	fe	Deferred Tax Assets Liabilities Net Non Current Nuclear Decommissioning Activities DeferredTaxAssetsLiabilitiesNetNonCurrentNuclearDecommissioningActivities	-450000000	USD
CY2016Q4	fe	Deferred Tax Assets Liabilities Net Non Current Pension And Other Post Retirement Obligations DeferredTaxAssetsLiabilitiesNetNonCurrentPensionAndOtherPostRetirementObligations	1347000000	USD
CY2017Q4	fe	Deferred Tax Assets Liabilities Net Non Current Pension And Other Post Retirement Obligations DeferredTaxAssetsLiabilitiesNetNonCurrentPensionAndOtherPostRetirementObligations	952000000	USD
CY2016Q4	fe	Deferred Tax Assets Liabilities Net Non Current Property Basis Differences DeferredTaxAssetsLiabilitiesNetNonCurrentPropertyBasisDifferences	-7088000000	USD
CY2017Q4	fe	Deferred Tax Assets Liabilities Net Non Current Property Basis Differences DeferredTaxAssetsLiabilitiesNetNonCurrentPropertyBasisDifferences	-3662000000	USD
CY2016Q4	fe	Deferred Tax Assets Liabilities Net Regulatory Asset Liability DeferredTaxAssetsLiabilitiesNetRegulatoryAssetLiability	-545000000	USD
CY2017Q4	fe	Deferred Tax Assets Liabilities Net Regulatory Asset Liability DeferredTaxAssetsLiabilitiesNetRegulatoryAssetLiability	-416000000	USD
CY2016Q4	fe	Deferred Tax Assets Nuclear Fuel Impairment DeferredTaxAssetsNuclearFuelImpairment	90000000	USD
CY2017Q4	fe	Deferred Tax Assets Nuclear Fuel Impairment DeferredTaxAssetsNuclearFuelImpairment	375000000	USD
CY2017	fe	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Decreasein Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDecreaseinDiscountRate	0.0050
CY2016	fe	Defined Benefit Plan Currentand Future Contributions Madein Current Year DefinedBenefitPlanCurrentandFutureContributionsMadeinCurrentYear	882000000	USD
CY2015Q4	fe	Defined Benefit Plan Markto Market Adjustment Net DefinedBenefitPlanMarktoMarketAdjustmentNet	242000000	USD
CY2016Q4	fe	Defined Benefit Plan Markto Market Adjustment Net DefinedBenefitPlanMarktoMarketAdjustmentNet	147000000	USD
CY2017Q4	fe	Defined Benefit Plan Markto Market Adjustment Net DefinedBenefitPlanMarktoMarketAdjustmentNet	141000000	USD
CY2015	fe	Effective Income Tax Rate Reconciliation Allowancefor Funds Used During Construction Equity And Other Flowthrough EffectiveIncomeTaxRateReconciliationAllowanceforFundsUsedDuringConstructionEquityAndOtherFlowthrough	16000000	USD
CY2016	fe	Effective Income Tax Rate Reconciliation Allowancefor Funds Used During Construction Equity And Other Flowthrough EffectiveIncomeTaxRateReconciliationAllowanceforFundsUsedDuringConstructionEquityAndOtherFlowthrough	13000000	USD
CY2017	fe	Effective Income Tax Rate Reconciliation Allowancefor Funds Used During Construction Equity And Other Flowthrough EffectiveIncomeTaxRateReconciliationAllowanceforFundsUsedDuringConstructionEquityAndOtherFlowthrough	15000000	USD
CY2015	fe	Effective Income Tax Rate Reconciliation Changein Accounting Method EffectiveIncomeTaxRateReconciliationChangeinAccountingMethod	-8000000	USD
CY2016	fe	Effective Income Tax Rate Reconciliation Changein Accounting Method EffectiveIncomeTaxRateReconciliationChangeinAccountingMethod	0	USD
CY2017	fe	Effective Income Tax Rate Reconciliation Changein Accounting Method EffectiveIncomeTaxRateReconciliationChangeinAccountingMethod	0	USD
CY2015	fe	Effective Income Tax Rate Reconciliation Remeasurementof Deferred Taxes EffectiveIncomeTaxRateReconciliationRemeasurementofDeferredTaxes	0	USD
CY2016	fe	Effective Income Tax Rate Reconciliation Remeasurementof Deferred Taxes EffectiveIncomeTaxRateReconciliationRemeasurementofDeferredTaxes	0	USD
CY2017	fe	Effective Income Tax Rate Reconciliation Remeasurementof Deferred Taxes EffectiveIncomeTaxRateReconciliationRemeasurementofDeferredTaxes	1193000000	USD
CY2015	fe	Excise Taxes Energy Generation ExciseTaxesEnergyGeneration	193000000	USD
CY2016	fe	Excise Taxes Energy Generation ExciseTaxesEnergyGeneration	196000000	USD
CY2017	fe	Excise Taxes Energy Generation ExciseTaxesEnergyGeneration	188000000	USD
CY2017	fe	Expected Number Of Nuclear Power Plant Licensed To Operate ExpectedNumberOfNuclearPowerPlantLicensedToOperate	102	Nuclear_Power_Plant
CY2016	fe	Goodwill Impairment Loss Nondeductible Portion GoodwillImpairmentLossNondeductiblePortion	433000000	USD
CY2015	fe	Impairment Of Investments Held ImpairmentOfInvestmentsHeld	464000000	USD
CY2016	fe	Impairment Of Investments Held ImpairmentOfInvestmentsHeld	21000000	USD
CY2017	fe	Impairment Of Investments Held ImpairmentOfInvestmentsHeld	13000000	USD
CY2017	fe	Number Of Variable Interest Contracts NumberOfVariableInterestContracts	1	entity
CY2017Q4	fe	Numberof Regional Transmission Centers NumberofRegionalTransmissionCenters	2	transmission_center
CY1987	fe	Operating Lease Term Of Other Subsidiaries OperatingLeaseTermOfOtherSubsidiaries	P30Y
CY2017Q4	fe	Insurance Coverage For Replacement Power Costs InsuranceCoverageForReplacementPowerCosts	1060000000	USD
CY2015	fe	Investment Income From Trusts InvestmentIncomeFromTrusts	101000000	USD
CY2016	fe	Investment Income From Trusts InvestmentIncomeFromTrusts	100000000	USD
CY2017	fe	Investment Income From Trusts InvestmentIncomeFromTrusts	98000000	USD
CY2016Q4	fe	Investments Excludes Receivables Payables Deferred Taxes And Accrued Income InvestmentsExcludesReceivablesPayablesDeferredTaxesAndAccruedIncome	-3000000	USD
CY2017Q4	fe	Investments Excludes Receivables Payables Deferred Taxes And Accrued Income InvestmentsExcludesReceivablesPayablesDeferredTaxesAndAccruedIncome	-8000000	USD
CY2016Q4	fe	Investments Not Required To Be Disclosed InvestmentsNotRequiredToBeDisclosed	266000000	USD
CY2017Q4	fe	Investments Not Required To Be Disclosed InvestmentsNotRequiredToBeDisclosed	255000000	USD
CY2015	fe	Lease Paymentson Saleand Leaseback Transaction LeasePaymentsonSaleandLeasebackTransaction	131000000	USD
CY2016	fe	Lease Paymentson Saleand Leaseback Transaction LeasePaymentsonSaleandLeasebackTransaction	120000000	USD
CY2017	fe	Lease Paymentson Saleand Leaseback Transaction LeasePaymentsonSaleandLeasebackTransaction	73000000	USD
CY2017	fe	Lengthof Transmission Lines LengthofTransmissionLines	24500	mi
CY2017	fe	Losses In Excess Of Private Insurance Contributed For Each Nuclear Unit License LossesInExcessOfPrivateInsuranceContributedForEachNuclearUnitLicense	127000000	USD
CY2017	fe	Losses In Excess Of Private Insurance Contributed For Each Nuclear Unit License Per Unit LossesInExcessOfPrivateInsuranceContributedForEachNuclearUnitLicensePerUnit	19000000	USD
CY2017	fe	Minimum Equity To Total Capitalization Ratio To Be Maintained For Payment Of Capital Dividend MinimumEquityToTotalCapitalizationRatioToBeMaintainedForPaymentOfCapitalDividend	0.35
CY2016Q4	fe	Net Plant Excluding Construction Work In Progress NetPlantExcludingConstructionWorkInProgress	28036000000	USD
CY2017Q4	fe	Net Plant Excluding Construction Work In Progress NetPlantExcludingConstructionWorkInProgress	27853000000	USD
CY2017	fe	Nuclear Incidence Liability Per Incident Of Parent And Subsidiary Companys Based On Their Present Nuclear Ownership And Leasehold Interests NuclearIncidenceLiabilityPerIncidentOfParentAndSubsidiaryCompanysBasedOnTheirPresentNuclearOwnershipAndLeaseholdInterests	509000000	USD
CY2017	fe	Nuclear Incident Liability Not More Than In Any One Year Per Incident Of Parent And Subsidiary Companies Based On Their Present Nuclear Ownership And Leasehold Interests NuclearIncidentLiabilityNotMoreThanInAnyOneYearPerIncidentOfParentAndSubsidiaryCompaniesBasedOnTheirPresentNuclearOwnershipAndLeaseholdInterests	76000000	USD
CY2017	fe	Nuclear Insurance Policy Aggregate Indemnity NuclearInsurancePolicyAggregateIndemnity	1400000000	USD
CY2017	fe	Nuclear Insurance Policy Environmental Plan Submission Period NuclearInsurancePolicyEnvironmentalPlanSubmissionPeriod	P30D
CY2017	fe	Nuclear Insurance Policy Indemnification Waiting Period NuclearInsurancePolicyIndemnificationWaitingPeriod	P84D
CY2017Q4	fe	Number Of Money Pools NumberOfMoneyPools	2	money_pool
CY2017	fe	Number Of Subsidiaries That Issued Environmental Control Bonds NumberOfSubsidiariesThatIssuedEnvironmentalControlBonds	2	subsidiary
CY2017	fe	Portion Of Insurance Coverage By Industry Retrospective Rating Plan PortionOfInsuranceCoverageByIndustryRetrospectiveRatingPlan	13000000000	USD
CY2017	fe	Portion Of Insurance Coverage Of Private Insurer Included In Single Nuclear Incident Liability PortionOfInsuranceCoverageOfPrivateInsurerIncludedInSingleNuclearIncidentLiability	450000000	USD
CY2016Q4	fe	Preference Stock Shares Outstanding PreferenceStockSharesOutstanding	0	shares
CY2017Q4	fe	Preference Stock Shares Outstanding PreferenceStockSharesOutstanding	0	shares
CY2016Q4	fe	Prepaid Taxesand Other PrepaidTaxesandOther	256000000	USD
CY2017Q4	fe	Prepaid Taxesand Other PrepaidTaxesandOther	219000000	USD
CY2017	fe	Principal Default Amount Specified In Debt Covenants PrincipalDefaultAmountSpecifiedInDebtCovenants	100000000	USD
CY2016Q4	fe	Property Plant And Equipment Excluding Construction In Progress PropertyPlantAndEquipmentExcludingConstructionInProgress	43767000000	USD
CY2017Q4	fe	Property Plant And Equipment Excluding Construction In Progress PropertyPlantAndEquipmentExcludingConstructionInProgress	39778000000	USD
CY2017	fe	Proposed Action Reductionin Power Plants Carbon Pollution Percentage ProposedActionReductioninPowerPlantsCarbonPollutionPercentage	0.9
CY2017	fe	Public Utilities Liability Assessedwith Respectto Single Nuclear Incident Based On Act PublicUtilitiesLiabilityAssessedwithRespecttoSingleNuclearIncidentBasedOnAct	13400000000	USD
CY2017	fe	Regional Enforcement Entities RegionalEnforcementEntities	8	entity
CY2015	fe	Removal Costs RemovalCosts	55000000	USD
CY2016	fe	Removal Costs RemovalCosts	54000000	USD
CY2017	fe	Removal Costs RemovalCosts	22000000	USD
CY1987	fe	Subsidiary One Operating Lease Term Of Subsidiary One SubsidiaryOneOperatingLeaseTermOfSubsidiaryOne	P29Y
CY2017	fe	Tax Cutsand Jobs Actof2017 Changein Tax Rate Income Tax Expense Benefit TaxCutsandJobsActof2017ChangeinTaxRateIncomeTaxExpenseBenefit	1200000000	USD
CY2017	fe	Tax Cutsand Jobs Actof2017 Effective Income Tax Rate Priorto Tax Cuts Percent TaxCutsandJobsActof2017EffectiveIncomeTaxRatePriortoTaxCutsPercent	0.359
CY2015	fe	Taxes Gross Receipts Stateand Local TaxesGrossReceiptsStateandLocal	224000000	USD
CY2016	fe	Taxes Gross Receipts Stateand Local TaxesGrossReceiptsStateandLocal	212000000	USD
CY2017	fe	Taxes Gross Receipts Stateand Local TaxesGrossReceiptsStateandLocal	204000000	USD
CY2015	fe	Taxes Social Securityand Unemployment TaxesSocialSecurityandUnemployment	119000000	USD
CY2016	fe	Taxes Social Securityand Unemployment TaxesSocialSecurityandUnemployment	127000000	USD
CY2017	fe	Taxes Social Securityand Unemployment TaxesSocialSecurityandUnemployment	131000000	USD
CY2016Q4	fe	Unamortized Gains Included In Long Term Debt Associated With Prior Fixed For Floating Interest Rate Swap Agreements UnamortizedGainsIncludedInLongTermDebtAssociatedWithPriorFixedForFloatingInterestRateSwapAgreements	10000000	USD
CY2017Q4	fe	Unamortized Gains Included In Long Term Debt Associated With Prior Fixed For Floating Interest Rate Swap Agreements UnamortizedGainsIncludedInLongTermDebtAssociatedWithPriorFixedForFloatingInterestRateSwapAgreements	3000000	USD
CY2017Q4	fe	Unrecognized Tax Benefits Portion Expected To Be Resolved In Next Fiscal Year UnrecognizedTaxBenefitsPortionExpectedToBeResolvedInNextFiscalYear	2000000	USD
CY2017Q4	fe	Unrecognized Tax Benefitsthat Would Impact Effective Tax Rate Future Years UnrecognizedTaxBenefitsthatWouldImpactEffectiveTaxRateFutureYears	24000000	USD
CY2017Q4	fe	Variable Interest Entities Discounted Lease Payments Net VariableInterestEntitiesDiscountedLeasePaymentsNet	862000000	USD
CY2017Q4	fe	Variable Interest Entities Net Exposure VariableInterestEntitiesNetExposure	221000000	USD
CY2016Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1043000000	USD
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1027000000	USD
CY2016Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1440000000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1463000000	USD
CY2016Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	363000000	USD
CY2017Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	336000000	USD
CY2016Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	580000000	USD
CY2017Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	571000000	USD
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	15731000000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	11925000000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	174000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	142000000	USD
CY2016Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	10555000000	USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	10001000000	USD
CY2015	us-gaap	Amortization Of Deferred Leasing Fees AmortizationOfDeferredLeasingFees	48000000	USD
CY2016	us-gaap	Amortization Of Deferred Leasing Fees AmortizationOfDeferredLeasingFees	49000000	USD
CY2017	us-gaap	Amortization Of Deferred Leasing Fees AmortizationOfDeferredLeasingFees	49000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	15000000	USD
CY2015	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	172000000	USD
CY2016	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	297000000	USD
CY2017	us-gaap	Amortization Of Regulatory Asset AmortizationOfRegulatoryAsset	308000000	USD
CY2015	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1000000	shares
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3000000	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3000000	shares
CY2015	us-gaap	Asset Impairment Charges AssetImpairmentCharges	42000000	USD
CY2016	us-gaap	Asset Impairment Charges AssetImpairmentCharges	10665000000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2406000000	USD
CY2015Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1410000000	USD
CY2016Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1482000000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2515000000	USD
CY2016	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	95000000	USD
CY2017	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	101000000	USD
CY2016Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2016Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
CY2016	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	4000000	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	0	USD
CY2016	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	27000000	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	12000000	USD
CY2017	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	944000000	USD
CY2016Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	1482000000	USD
CY2017Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	2515000000	USD
CY2015Q4	us-gaap	Assets Assets	52094000000	USD
CY2016Q4	us-gaap	Assets Assets	43148000000	USD
CY2017Q4	us-gaap	Assets Assets	42257000000	USD
CY2016Q4	us-gaap	Assets Current AssetsCurrent	2950000000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	3108000000	USD
CY2016Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	7785000000	USD
CY2017Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	6711000000	USD
CY2015	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	209000000	USD
CY2016	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	170000000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	330000000	USD
CY2015	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	1534000000	USD
CY2016	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	1678000000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Gains Losses Sale Proceeds AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds	2170000000	USD
CY2015	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	191000000	USD
CY2016	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	121000000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	253000000	USD
CY2016Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	104000000	USD
CY2017Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	91000000	USD
CY2017Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	24000000	USD
CY2017Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	67000000	USD
CY2016Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	244000000	USD
CY2017Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	238000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	117000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	28000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	13000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	15000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	18000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	23000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	20000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	26000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	91000000	USD
CY2016Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	24433000000	USD
CY2017Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	25040000000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	85000000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	131000000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	199000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	589000000	USD
CY2017Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1026000000	USD
CY2015	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	4423000000	USD
CY2016	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	3843000000	USD
CY2017	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	3194000000	USD
CY2016Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	87000000	USD
CY2016Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
CY2016Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
CY2016Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
CY2017Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
CY2017Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
CY2017Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
CY2017Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.36
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
CY2016Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.1
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.1
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	490000000	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	700000000	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	442344218	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	445334111	shares
CY2016Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	44000000	USD
CY2017Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	44000000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	503000000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-6174000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-1756000000	USD
CY2016Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1351000000	USD
CY2015	us-gaap	Costs And Expenses CostsAndExpenses	12734000000	USD
CY2016	us-gaap	Costs And Expenses CostsAndExpenses	22824000000	USD
CY2017	us-gaap	Costs And Expenses CostsAndExpenses	13845000000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1000000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1000000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	14000000	USD
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	31000000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8000000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	56000000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	30000000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	9000000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	42000000	USD
CY2016Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	25000000	USD
CY2017Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	42000000	USD
CY2016Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	2514000000	USD
CY2017Q4	us-gaap	Decommissioning Fund Investments DecommissioningFundInvestments	2678000000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	277000000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3114000000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	876000000	USD
CY2015	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	242000000	USD
CY2016Q1	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	0	USD
CY2016Q2	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	0	USD
CY2016Q3	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	0	USD
CY2016Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	147000000	USD
CY2017Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	113000000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	292000000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3055000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	847000000	USD
CY2015	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	284000000	USD
CY2016	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-3063000000	USD
CY2017	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	839000000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	15000000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	59000000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-29000000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	269000000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	177000000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3765000000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1359000000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	3765000000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	1359000000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	18000000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	1000000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	21000000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	1000000	USD
CY2016	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	147000000	USD
CY2017Q1	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	0	USD
CY2017Q2	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	0	USD
CY2017Q3	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	0	USD
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	141000000	USD
CY2017	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	141000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1
CY2015	us-gaap	Depreciation Depreciation	1282000000	USD
CY2016Q1	us-gaap	Depreciation Depreciation	329000000	USD
CY2016Q2	us-gaap	Depreciation Depreciation	334000000	USD
CY2016Q3	us-gaap	Depreciation Depreciation	311000000	USD
CY2016Q4	us-gaap	Depreciation Depreciation	339000000	USD
CY2016	us-gaap	Depreciation Depreciation	1313000000	USD
CY2017Q1	us-gaap	Depreciation Depreciation	275000000	USD
CY2017Q2	us-gaap	Depreciation Depreciation	281000000	USD
CY2017Q3	us-gaap	Depreciation Depreciation	289000000	USD
CY2017Q4	us-gaap	Depreciation Depreciation	293000000	USD
CY2017	us-gaap	Depreciation Depreciation	1138000000	USD
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1826000000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1974000000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1700000000	USD
CY2016Q4	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement Deduction DerivativeAssetNotSubjectToMasterNettingArrangementDeduction	123000000	USD
CY2017Q4	us-gaap	Derivative Asset Not Subject To Master Netting Arrangement Deduction DerivativeAssetNotSubjectToMasterNettingArrangementDeduction	20000000	USD
CY2016Q4	us-gaap	Derivative Assets DerivativeAssets	218000000	USD
CY2017Q4	us-gaap	Derivative Assets DerivativeAssets	37000000	USD
CY2016Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	140000000	USD
CY2017Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	37000000	USD
CY2016Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2017Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2016Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	1000000	USD
CY2017Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	3000000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	218000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	37000000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	95000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	17000000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	238000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	107000000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	114000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	84000000	USD
CY2016Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	238000000	USD
CY2017Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	107000000	USD
CY2016Q4	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement Deduction DerivativeLiabilityNotSubjectToMasterNettingArrangementDeduction	123000000	USD
CY2017Q4	us-gaap	Derivative Liability Not Subject To Master Netting Arrangement Deduction DerivativeLiabilityNotSubjectToMasterNettingArrangementDeduction	20000000	USD
CY2016Q4	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	0	USD
CY2017Q4	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	375000000	USD
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.37
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.78
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.56
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-13.44
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-14.49
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.46
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.62
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.88
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.37
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.77
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.56
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.89
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-13.44
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-14.49
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.46
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.89
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.62
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.88
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.353
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.331
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-1.080
CY2015	us-gaap	Electric Worldwide Unregulated Revenue ElectricWorldwideUnregulatedRevenue	4398000000	USD
CY2016	us-gaap	Electric Worldwide Unregulated Revenue ElectricWorldwideUnregulatedRevenue	3789000000	USD
CY2017	us-gaap	Electric Worldwide Unregulated Revenue ElectricWorldwideUnregulatedRevenue	2958000000	USD
CY2015	us-gaap	Electrical Distribution Revenue ElectricalDistributionRevenue	9625000000	USD
CY2016	us-gaap	Electrical Distribution Revenue ElectricalDistributionRevenue	9629000000	USD
CY2017	us-gaap	Electrical Distribution Revenue ElectricalDistributionRevenue	9734000000	USD
CY2015	us-gaap	Electrical Transmission Revenue ElectricalTransmissionRevenue	1003000000	USD
CY2016	us-gaap	Electrical Transmission Revenue ElectricalTransmissionRevenue	1144000000	USD
CY2017	us-gaap	Electrical Transmission Revenue ElectricalTransmissionRevenue	1325000000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	32000000	USD
CY2016	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	38000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	37000000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	12000000	USD
CY2016	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	14000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10000000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	10000000	USD
CY2016	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	13000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	15000000	USD
CY2015	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	362000000	USD
CY2016	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
CY2017	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
CY2015	us-gaap	Excise Taxes Collected ExciseTaxesCollected	416000000	USD
CY2016	us-gaap	Excise Taxes Collected ExciseTaxesCollected	406000000	USD
CY2017	us-gaap	Excise Taxes Collected ExciseTaxesCollected	390000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	277000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	67000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	11000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	5000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	5000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	7000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	10000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	382000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	105000000	USD
CY2015	us-gaap	Fuel Costs FuelCosts	1855000000	USD
CY2016	us-gaap	Fuel Costs FuelCosts	1666000000	USD
CY2017	us-gaap	Fuel Costs FuelCosts	1383000000	USD
CY2015	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	23000000	USD
CY2016	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	50000000	USD
CY2017	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	63000000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	6418000000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	5618000000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	5618000000	USD
CY2016Q2	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	800000000	USD
CY2016	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	800000000	USD
CY2017Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	3800000000	USD
CY2017Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	407000000	USD
CY2015	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	42000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	893000000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-9232000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-829000000	USD
CY2016Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	541000000	USD
CY2016Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-1219000000	USD
CY2016Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	631000000	USD
CY2016Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-9185000000	USD
CY2017Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	331000000	USD
CY2017Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	291000000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	635000000	USD
CY2017Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-2086000000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	315000000	USD
CY2016Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	213000000	USD
CY2016Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-130000000	USD
CY2016Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	251000000	USD
CY2016Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3389000000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-3055000000	USD
CY2017Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	126000000	USD
CY2017Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	117000000	USD
CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	239000000	USD
CY2017Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	413000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	895000000	USD
CY2015	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	6000000	USD
CY2016	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	6000000	USD
CY2017	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	6000000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	18000000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	246000000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	29000000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	313000000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-3231000000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-290000000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	157000000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2015	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	4000000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	8000000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-1000000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	17000000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-192000000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-4000000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	8000000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	8000000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	8000000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	1000000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-16000000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-3000000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	37000000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-16000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	53000000	USD
CY2015	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-184000000	USD
CY2016	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	11000000	USD
CY2017	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	39000000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-243000000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-37000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	72000000	USD
CY2015	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	29000000	USD
CY2016	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	61000000	USD
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-9000000	USD
CY2015	us-gaap	Increase Decrease In Deposits Outstanding IncreaseDecreaseInDepositsOutstanding	-140000000	USD
CY2016	us-gaap	Increase Decrease In Deposits Outstanding IncreaseDecreaseInDepositsOutstanding	116000000	USD
CY2017	us-gaap	Increase Decrease In Deposits Outstanding IncreaseDecreaseInDepositsOutstanding	-27000000	USD
CY2015	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	5000000	USD
CY2016	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	29000000	USD
CY2017	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-27000000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	15000000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-41000000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	6000000	USD
CY2015	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	69000000	USD
CY2016	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	56000000	USD
CY2017	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	20000000	USD
CY2015	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	10000000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-27000000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-30000000	USD
CY2017	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-3537000000	USD
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2015	us-gaap	Interest And Debt Expense InterestAndDebtExpense	1132000000	USD
CY2016	us-gaap	Interest And Debt Expense InterestAndDebtExpense	1157000000	USD
CY2017	us-gaap	Interest And Debt Expense InterestAndDebtExpense	1178000000	USD
CY2015	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	68000000	USD
CY2016	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	66000000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	44000000	USD
CY2015	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	117000000	USD
CY2016	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	103000000	USD
CY2017	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	79000000	USD
CY2015	us-gaap	Interest Expense InterestExpense	1132000000	USD
CY2016	us-gaap	Interest Expense InterestExpense	1157000000	USD
CY2017	us-gaap	Interest Expense InterestExpense	1178000000	USD
CY2015	us-gaap	Interest Paid Net InterestPaidNet	1028000000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	1050000000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	1039000000	USD
CY2016Q4	us-gaap	Inventory Net InventoryNet	564000000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	463000000	USD
CY2015	us-gaap	Investment Income Net InvestmentIncomeNet	-22000000	USD
CY2016	us-gaap	Investment Income Net InvestmentIncomeNet	84000000	USD
CY2017	us-gaap	Investment Income Net InvestmentIncomeNet	98000000	USD
CY2015	us-gaap	Investment Tax Credit InvestmentTaxCredit	-8000000	USD
CY2016	us-gaap	Investment Tax Credit InvestmentTaxCredit	-8000000	USD
CY2017	us-gaap	Investment Tax Credit InvestmentTaxCredit	-8000000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	174000000	USD
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	168000000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	158000000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	43148000000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	42257000000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	7126000000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4077000000	USD
CY2016Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	11589000000	USD
CY2017Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	13140000000	USD
CY2016Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	18192000000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	21115000000	USD
CY2016Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1685000000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1082000000	USD
CY2016Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1685000000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1082000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1051000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1428000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	2032000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1281000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1267000000	USD
CY2016Q4	us-gaap	Long Term Investments LongTermInvestments	3026000000	USD
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	3184000000	USD
CY2016Q4	us-gaap	Longterm Pollution Control Bond Current And Noncurrent LongtermPollutionControlBondCurrentAndNoncurrent	406000000	USD
CY2017Q4	us-gaap	Longterm Pollution Control Bond Current And Noncurrent LongtermPollutionControlBondCurrentAndNoncurrent	383000000	USD
CY2016Q4	us-gaap	Longterm Transition Bond Current And Noncurrent LongtermTransitionBondCurrentAndNoncurrent	85000000	USD
CY2017Q4	us-gaap	Longterm Transition Bond Current And Noncurrent LongtermTransitionBondCurrentAndNoncurrent	56000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	46000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	68000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	390000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-292000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-34000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-702000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3122000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3281000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2716000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3460000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3383000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3808000000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	578000000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	328000000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	-1089000000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	380000000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	-5796000000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	-6177000000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	205000000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	174000000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	396000000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	-2499000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-1724000000	USD
CY2016Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	857000000	USD
CY2017Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	-2680000000	USD
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1399000000	USD
CY2016	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-970000000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1001000000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	2292000000	USD
CY2016Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	776000000	USD
CY2016Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-975000000	USD
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	861000000	USD
CY2016Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-8924000000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	-8262000000	USD
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	574000000	USD
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	544000000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	884000000	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-1830000000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	172000000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1153000000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1053000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-11000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	55000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	22000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-122000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	4000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-53000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	5000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	8000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	10000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-75000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-32000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	116000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	59000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	85000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	44000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	23000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	32000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-47000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-21000000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	1000000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	3000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	4000000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	4000000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	21000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	7000000	USD
CY2015	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3740000000	USD
CY2016Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	917000000	USD
CY2016Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	963000000	USD
CY2016Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	950000000	USD
CY2016Q4	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1021000000	USD
CY2016	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3851000000	USD
CY2017Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1141000000	USD
CY2017Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	956000000	USD
CY2017Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	940000000	USD
CY2017Q4	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1195000000	USD
CY2017	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	4232000000	USD
CY2016Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	738000000	USD
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	722000000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1547000000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1718000000	USD
CY2016Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	512000000	USD
CY2017Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	506000000	USD
CY2015	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	152000000	USD
CY2016	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	142000000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	320000000	USD
CY2016Q4	us-gaap	Other Receivables OtherReceivables	175000000	USD
CY2017Q4	us-gaap	Other Receivables OtherReceivables	191000000	USD
CY2016Q4	us-gaap	Other Restricted Assets Current OtherRestrictedAssetsCurrent	176000000	USD
CY2017Q4	us-gaap	Other Restricted Assets Current OtherRestrictedAssetsCurrent	146000000	USD
CY2015	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	102000000	USD
CY2016	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	21000000	USD
CY2017	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities	13000000	USD
CY2015	us-gaap	Payments For Nuclear Fuel PaymentsForNuclearFuel	190000000	USD
CY2016	us-gaap	Payments For Nuclear Fuel PaymentsForNuclearFuel	232000000	USD
CY2017	us-gaap	Payments For Nuclear Fuel PaymentsForNuclearFuel	254000000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-8000000	USD
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-27000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-7000000	USD
CY2015	us-gaap	Payments For Removal Costs PaymentsForRemovalCosts	142000000	USD
CY2016	us-gaap	Payments For Removal Costs PaymentsForRemovalCosts	145000000	USD
CY2017	us-gaap	Payments For Removal Costs PaymentsForRemovalCosts	172000000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	607000000	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	611000000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	639000000	USD
CY2015	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1648000000	USD
CY2016	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	1789000000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	2268000000	USD
CY2015	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2704000000	USD
CY2016	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2835000000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2587000000	USD
CY2015	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	20000000	USD
CY2016	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	-64000000	USD
CY2017	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	-29000000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3719000000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3975000000	USD
CY2016Q4	us-gaap	Pension Contributions PensionContributions	500000000	USD
CY2015	us-gaap	Pension Contributions PensionContributions	143000000	USD
CY2016	us-gaap	Pension Contributions PensionContributions	382000000	USD
CY2017	us-gaap	Pension Contributions PensionContributions	0	USD
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	100
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2016Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2016	us-gaap	Proceeds From Contributions From Parent ProceedsFromContributionsFromParent	500000000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1311000000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1976000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	4675000000	USD
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-26000000	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-43000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-72000000	USD
CY2015	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	1534000000	USD
CY2016	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	1678000000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	2170000000	USD
CY2017Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	1026000000	USD
CY2015	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.025
CY2016	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.025
CY2017	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.024
CY2015	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	410000000	USD
CY2015	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	20000000	USD
CY2016	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	15000000	USD
CY2017	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	388000000	USD
CY2015	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2016	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	975000000	USD
CY2017	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	43767000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	39778000000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29387000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	28879000000	USD
CY2015	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	49000000	USD
CY2016	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	37000000	USD
CY2017	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	35000000	USD
CY2016Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	1351000000	USD
CY2016	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	472000000	USD
CY2017	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	486000000	USD
CY2016Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	1014000000	USD
CY2017Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	40000000	USD
CY2016Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	157000000	USD
CY2017Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2720000000	USD
CY2016Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	153000000	USD
CY2017Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	7000000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	879000000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2331000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2291000000	USD
CY2015	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	91000000	USD
CY2016	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	0	USD
CY2017	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	2375000000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-4532000000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-6262000000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-6300000000	USD
CY2015	us-gaap	Revenues Revenues	15026000000	USD
CY2016	us-gaap	Revenues Revenues	14562000000	USD
CY2017	us-gaap	Revenues Revenues	14017000000	USD
CY2016Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Net SaleLeasebackTransactionDeferredGainNet	757000000	USD
CY2017Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Net SaleLeasebackTransactionDeferredGainNet	723000000	USD
CY2015	us-gaap	Sales Revenue Net SalesRevenueNet	15026000000	USD
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1376821	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1366875	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	9946	shares
CY2016Q1	us-gaap	Sales Revenue Net SalesRevenueNet	3869000000	USD
CY2016Q2	us-gaap	Sales Revenue Net SalesRevenueNet	3401000000	USD
CY2016Q3	us-gaap	Sales Revenue Net SalesRevenueNet	3917000000	USD
CY2016Q4	us-gaap	Sales Revenue Net SalesRevenueNet	3375000000	USD
CY2016	us-gaap	Sales Revenue Net SalesRevenueNet	14562000000	USD
CY2017Q1	us-gaap	Sales Revenue Net SalesRevenueNet	3552000000	USD
CY2017Q2	us-gaap	Sales Revenue Net SalesRevenueNet	3309000000	USD
CY2017Q3	us-gaap	Sales Revenue Net SalesRevenueNet	3714000000	USD
CY2017Q4	us-gaap	Sales Revenue Net SalesRevenueNet	3442000000	USD
CY2017	us-gaap	Sales Revenue Net SalesRevenueNet	14017000000	USD
CY2016Q4	us-gaap	Secured Debt SecuredDebt	5633000000	USD
CY2017Q4	us-gaap	Secured Debt SecuredDebt	5455000000	USD
CY2016Q4	us-gaap	Securities Loaned SecuritiesLoaned	42000000	USD
CY2017Q4	us-gaap	Securities Loaned SecuritiesLoaned	39000000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Based Liabilities Paid ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid	0	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1376821	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1366875	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	44.60
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	44.41
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	70.60
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost1 SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1	89000000	USD
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost1 SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1	105000000	USD
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost1 SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1	98000000	USD
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y8M1D
CY2016Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	2675000000	USD
CY2017Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	300000000	USD
CY2016Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0247
CY2017Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0324
CY2015	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2016	us-gaap	Stock Issued1 StockIssued1	500000000	USD
CY2017	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6241000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3925000000	USD
CY2015	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	978000000	USD
CY2016	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1042000000	USD
CY2017	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1043000000	USD
CY2015	us-gaap	Taxes Other TaxesOther	32000000	USD
CY2016	us-gaap	Taxes Other TaxesOther	35000000	USD
CY2017	us-gaap	Taxes Other TaxesOther	34000000	USD
CY2016Q1	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	0	USD
CY2015	us-gaap	Unrealized Gain Loss On Commodity Contracts UnrealizedGainLossOnCommodityContracts	73000000	USD
CY2016	us-gaap	Unrealized Gain Loss On Commodity Contracts UnrealizedGainLossOnCommodityContracts	-9000000	USD
CY2017	us-gaap	Unrealized Gain Loss On Commodity Contracts UnrealizedGainLossOnCommodityContracts	-81000000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	34000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	34000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	84000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	80000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	10000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	21000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	7000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	69000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	6000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	0	USD
CY2016Q4	us-gaap	Unsecured Debt UnsecuredDebt	14258000000	USD
CY2017Q4	us-gaap	Unsecured Debt UnsecuredDebt	16820000000	USD
CY2015	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	42000000	USD
CY2016Q2	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	1447000000	USD
CY2016Q3	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	0	USD
CY2016Q4	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	9218000000	USD
CY2016	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	10665000000	USD
CY2017Q1	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	0	USD
CY2017Q2	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	131000000	USD
CY2017Q3	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	31000000	USD
CY2017Q4	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	2244000000	USD
CY2017	us-gaap	Utilities Operating Expense Impairments UtilitiesOperatingExpenseImpairments	2406000000	USD
CY2015	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	978000000	USD
CY2016	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1042000000	USD
CY2017	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1043000000	USD
CY2017Q4	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	1083000000	USD
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	424000000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	426000000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	444000000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	422000000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	426000000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	444000000	shares
CY2017	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;font-size:9pt;"><font style="font-family:Arial;font-size:9pt;">FE and its subsidiaries follow GAAP and comply with the related regulations, orders, policies and practices prescribed by the SEC, FERC, and, as applicable, the NRC, the PUCO, the PPUC, the MDPSC, the NYPSC, the WVPSC, the VSCC and the NJBPU. The preparation of financial statements in conformity with GAAP requires management to make periodic estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and disclosure of contingent assets and liabilities. Actual results could differ from these estimates. The reported results of operations are not necessarily indicative of results of operations for any future period. FE and its subsidiaries have evaluated events and transactions for potential recognition or disclosure through the date the financial statements were issued.</font></div></div>

Files In Submission

Name	View Source	Status
0001031296-18-000015-index-headers.html	Edgar Link	pending
0001031296-18-000015-index.html	Edgar Link	pending
0001031296-18-000015.txt	Edgar Link	pending
0001031296-18-000015-xbrl.zip	Edgar Link	pending
chart-b9b1f035f63c5926adc.jpg	Edgar Link	pending
fe-12312017x10k.htm	Edgar Link	pending
fe-12312017xex1056.htm	Edgar Link	pending
fe-12312017xex1057.htm	Edgar Link	pending
fe-12312017xex1058.htm	Edgar Link	pending
fe-12312017xex12.htm	Edgar Link	pending
fe-12312017xex21.htm	Edgar Link	pending
fe-12312017xex23.htm	Edgar Link	pending
fe-12312017xex31.htm	Edgar Link	pending
fe-12312017xex311.htm	Edgar Link	pending
fe-12312017xex312.htm	Edgar Link	pending
fe-12312017xex32.htm	Edgar Link	pending
fe-12312017xexhibit32.htm	Edgar Link	pending
fe-20171231.xml	Edgar Link	completed
fe-20171231.xsd	Edgar Link	pending
fe-20171231_cal.xml	Edgar Link	unprocessable
fe-20171231_def.xml	Edgar Link	unprocessable
fe-20171231_lab.xml	Edgar Link	unprocessable
fe-20171231_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R113.htm	Edgar Link	pending
R114.htm	Edgar Link	pending
R115.htm	Edgar Link	pending
R116.htm	Edgar Link	pending
R117.htm	Edgar Link	pending
R118.htm	Edgar Link	pending
R119.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R120.htm	Edgar Link	pending
R121.htm	Edgar Link	pending
R122.htm	Edgar Link	pending
R123.htm	Edgar Link	pending
R124.htm	Edgar Link	pending
R125.htm	Edgar Link	pending
R126.htm	Edgar Link	pending
R127.htm	Edgar Link	pending
R128.htm	Edgar Link	pending
R129.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R130.htm	Edgar Link	pending
R131.htm	Edgar Link	pending
R132.htm	Edgar Link	pending
R133.htm	Edgar Link	pending
R134.htm	Edgar Link	pending
R135.htm	Edgar Link	pending
R136.htm	Edgar Link	pending
R137.htm	Edgar Link	pending
R138.htm	Edgar Link	pending
R139.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R140.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$FE
FirstEnergy Corp Stock $fe

2016 Q4 Form 10-K Financial Statement

#000103129618000015 Filed on February 20, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FE FirstEnergy Corp Stock $fe

2016 Q4 Form 10-K Financial Statement

#000103129618000015 Filed on February 20, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FE
FirstEnergy Corp Stock $fe