$FE
FirstEnergy Corp Stock $fe

$fe Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000103129622000013 Filed on February 16, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$2.660B	$11.13B	$2.537B
YoY Change	4.85%	3.17%	-5.09%
Cost Of Revenue	$758.0M	$2.964B	$628.0M
YoY Change	20.7%	9.74%	-14.79%
Gross Profit	$1.902B	$8.168B	$1.909B
YoY Change	-0.37%	0.98%	-1.39%
Gross Profit Margin	71.5%	73.37%	75.25%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$439.0M	$1.601B	$395.0M
YoY Change	11.14%	33.53%	27.42%
% of Gross Profit	23.08%	19.6%	20.69%
Operating Expenses	$1.678B	$6.551B	$1.515B
YoY Change	10.76%	10.53%	14.69%
Operating Profit	$224.0M	$1.726B	$394.0M
YoY Change	-43.15%	-20.17%	-35.93%
Interest Expense	-$265.0M	$1.141B	-$253.0M
YoY Change	4.74%	7.14%	4.55%
% of Operating Profit	-118.3%	66.11%	-64.21%
Other Income/Expense, Net	$138.0M	-$167.0M	$129.0M
YoY Change	6.98%	-83.83%	148.08%
Pretax Income	$479.0M	$1.559B	$216.0M
YoY Change	121.76%	38.09%	-186.75%
Income Tax	$49.00M	$320.0M	$4.000M
% Of Pretax Income	10.23%	20.53%	1.85%
Net Earnings	$427.0M	$1.283B	$242.0M
YoY Change	76.45%	18.91%	-318.02%
Net Earnings / Revenue	16.05%	11.53%	9.54%
Basic Earnings Per Share		$2.35
Diluted Earnings Per Share	$777.8K	$2.35	$445.7K
COMMON SHARES
Basic Shares Outstanding		545.0M shares
Diluted Shares Outstanding		546.0M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.462B	$1.462B	$1.734B
YoY Change	-15.69%	-15.69%	176.56%
Cash & Equivalents	$1.462B	$1.462B	$1.734B
Short-Term Investments
Other Short-Term Assets	$187.0M	$236.0M	$157.0M
YoY Change	19.11%	5.36%	0.0%
Inventory	$260.0M	$260.0M	$317.0M
Prepaid Expenses
Receivables	$1.033B	$1.033B	$1.203B
Other Receivables	$246.0M	$246.0M	$236.0M
Total Short-Term Assets	$3.237B	$3.237B	$3.714B
YoY Change	-12.84%	-12.84%	51.96%
LONG-TERM ASSETS
Property, Plant & Equipment	$34.74B	$35.02B	$33.29B
YoY Change	4.36%	4.36%	5.19%
Goodwill	$5.618B		$5.618B
YoY Change	0.0%		0.0%
Intangibles
YoY Change
Long-Term Investments	$655.0M	$655.0M	$605.0M
YoY Change	8.26%	8.26%	6.33%
Other Assets	$1.107B	$899.0M	$1.106B
YoY Change	0.09%	0.45%	6.45%
Total Long-Term Assets	$42.20B	$42.20B	$40.75B
YoY Change	3.55%	3.55%	503.17%
TOTAL ASSETS
Total Short-Term Assets	$3.237B	$3.237B	$3.714B
Total Long-Term Assets	$42.20B	$42.20B	$40.75B
Total Assets	$45.43B	$45.43B	$44.46B
YoY Change	2.18%	2.18%	5.11%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$943.0M	$943.0M	$827.0M
YoY Change	14.03%	14.03%	-9.91%
Accrued Expenses	$596.0M	$635.0M	$673.0M
YoY Change	-11.44%	-5.65%	24.86%
Deferred Revenue	$214.0M
YoY Change
Short-Term Debt	$0.00	$0.00	$2.200B
YoY Change	-100.0%	-100.0%	120.0%
Long-Term Debt Due	$1.606B	$1.606B	$146.0M
YoY Change	1000.0%	1000.0%	-61.58%
Total Short-Term Liabilities	$4.416B	$4.416B	$5.004B
YoY Change	-11.75%	-11.75%	2.92%
LONG-TERM LIABILITIES
Long-Term Debt	$22.25B	$22.25B	$22.13B
YoY Change	0.53%	0.53%	12.81%
Other Long-Term Liabilities	$1.863B	$6.656B	$1.826B
YoY Change	2.03%	-4.87%	9.54%
Total Long-Term Liabilities	$10.09B	$28.90B	$10.09B
YoY Change	0.01%	-0.77%	-6.95%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.416B	$4.416B	$5.004B
Total Long-Term Liabilities	$10.09B	$28.90B	$10.09B
Total Liabilities	$14.51B	$36.76B	$15.10B
YoY Change	-3.89%	-1.26%	-3.9%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.605B		-$2.888B
YoY Change	-44.43%		-27.2%
Common Stock	$10.24B		$10.08B
YoY Change	1.61%		-7.29%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$8.675B	$8.675B	$7.237B
YoY Change
Total Liabilities & Shareholders Equity	$45.43B	$45.43B	$44.46B
YoY Change	2.18%	2.18%	5.11%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$427.0M	$1.283B	$242.0M
YoY Change	76.45%	18.91%	-318.02%
Depreciation, Depletion And Amortization	$439.0M	$1.601B	$395.0M
YoY Change	11.14%	33.53%	27.42%
Cash From Operating Activities	$707.0M	$2.811B	$572.0M
YoY Change	23.6%	97.54%	-21.64%
INVESTING ACTIVITIES
Capital Expenditures	-$677.0M	-$2.445B	-$678.0M
YoY Change	-0.15%	-7.98%	-9.96%
Acquisitions
YoY Change
Other Investing Activities	-$71.00M	$32.00M	-$59.00M
YoY Change	20.34%	540.0%	51.28%
Cash From Investing Activities	-$748.0M	-$2.559B	-$737.0M
YoY Change	1.49%	-12.0%	-6.94%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$1.000B
YoY Change
Debt Paid & Issued, Net		$532.0M
YoY Change		-52.24%
Cash From Financing Activities	868.0M	-$542.0M	1.670B
YoY Change	-48.02%	-120.79%	-18655.56%
NET CHANGE
Cash From Operating Activities	707.0M	$2.811B	572.0M
Cash From Investing Activities	-748.0M	-$2.559B	-737.0M
Cash From Financing Activities	868.0M	-$542.0M	1.670B
Net Change In Cash	827.0M	-$290.0M	1.505B
YoY Change	-45.05%	-125.85%	-2219.72%
FREE CASH FLOW
Cash From Operating Activities	$707.0M	$2.811B	$572.0M
Capital Expenditures	-$677.0M	-$2.445B	-$678.0M
Free Cash Flow	$1.384B	$5.256B	$1.250B
YoY Change	10.72%	28.82%	-15.71%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001031296
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021Q4	fe	Numberof Regional Transmission Centers NumberofRegionalTransmissionCenters	2	transmissionCenter
CY2021Q4	fe	Net Regulatory Assets Investment Return To Be Recovered NetRegulatoryAssetsInvestmentReturnToBeRecovered	228000000	USD
CY2020Q4	fe	Net Regulatory Assets Investment Return To Be Recovered NetRegulatoryAssetsInvestmentReturnToBeRecovered	195000000	USD
CY2021	fe	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Increase Decreasein Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationIncreaseDecreaseinDiscountRate	-0.0035
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssetsNoncurrent
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssetsNoncurrent
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#PropertyPlantAndEquipmentNet
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#PropertyPlantAndEquipmentNet
CY2020Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2021Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2021Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligationsCurrent
CY2020Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligationsCurrent
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligations
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LongTermDebtAndCapitalLeaseObligations
CY2021Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
CY2021Q4	fe	Guarantor Obligations Maximum Contractual Obligations Percent Of Face Amount Of Debt GuarantorObligationsMaximumContractualObligationsPercentOfFaceAmountOfDebt	1
CY2021	fe	Guarantor Obligations Curing Period GuarantorObligationsCuringPeriod	P30D
CY2020Q4	fe	Number Of Additional Executives Terminated NumberOfAdditionalExecutivesTerminated	2	director
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	333-21011
CY2021	dei	Entity Registrant Name EntityRegistrantName	FIRSTENERGY CORP
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	34-1843785
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	OH
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	76 South Main Street
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Akron
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	OH
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	44308
CY2021	dei	City Area Code CityAreaCode	(800)
CY2021	dei	Local Phone Number LocalPhoneNumber	736-3402
CY2021	dei	Security12b Title Security12bTitle	Common Stock, $0.10 par value per share
CY2021	dei	Trading Symbol TradingSymbol	FE
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	us-gaap	Fuel Costs FuelCosts	481000000	USD
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	20228791176	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	570344389	shares
CY2021	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2021	dei	Auditor Location AuditorLocation	Cleveland, Ohio
CY2021	us-gaap	Revenues Revenues	11132000000	USD
CY2020	us-gaap	Revenues Revenues	10790000000	USD
CY2019	us-gaap	Revenues Revenues	11035000000	USD
CY2020	us-gaap	Fuel Costs FuelCosts	369000000	USD
CY2019	us-gaap	Fuel Costs FuelCosts	497000000	USD
CY2021	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	2964000000	USD
CY2020	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	2701000000	USD
CY2019	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	2927000000	USD
CY2021	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3196000000	USD
CY2020	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3291000000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	2952000000	USD
CY2021	us-gaap	Depreciation Depreciation	1302000000	USD
CY2020	us-gaap	Depreciation Depreciation	1274000000	USD
CY2019	us-gaap	Depreciation Depreciation	1220000000	USD
CY2021	fe	Amortization Deferral Of Regulatory Asset AmortizationDeferralOfRegulatoryAsset	269000000	USD
CY2020	fe	Amortization Deferral Of Regulatory Asset AmortizationDeferralOfRegulatoryAsset	-53000000	USD
CY2019	fe	Amortization Deferral Of Regulatory Asset AmortizationDeferralOfRegulatoryAsset	-79000000	USD
CY2021	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1073000000	USD
CY2020	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1046000000	USD
CY2019	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1008000000	USD
CY2021	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-230000000	USD
CY2020	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	USD
CY2019	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	USD
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	109000000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	9406000000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	8628000000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	8525000000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	1726000000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	2162000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	2510000000	USD
CY2021	us-gaap	Investment Income Net InvestmentIncomeNet	517000000	USD
CY2020	us-gaap	Investment Income Net InvestmentIncomeNet	432000000	USD
CY2019	us-gaap	Investment Income Net InvestmentIncomeNet	243000000	USD
CY2021	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	382000000	USD
CY2020	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	-477000000	USD
CY2019	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets Period Increase Decrease DefinedBenefitPlanFairValueOfPlanAssetsPeriodIncreaseDecrease	-674000000	USD
CY2021	us-gaap	Interest And Debt Expense InterestAndDebtExpense	1141000000	USD
CY2020	us-gaap	Interest And Debt Expense InterestAndDebtExpense	1065000000	USD
CY2019	us-gaap	Interest And Debt Expense InterestAndDebtExpense	1033000000	USD
CY2021	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	75000000	USD
CY2020	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	77000000	USD
CY2019	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	71000000	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-167000000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1033000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1393000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1559000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1129000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1117000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	320000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	126000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	213000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1239000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1003000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	904000000	USD
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	44000000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	76000000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	8000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1283000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1079000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	912000000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	4000000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1283000000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1079000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	908000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.27
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.85
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.69
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.08
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.14
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.35
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.99
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.70
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.27
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.85
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.67
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.08
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.14
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.35
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.99
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.68
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	545000000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	542000000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	535000000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	546000000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	543000000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	542000000	shares
CY2021	us-gaap	Excise Taxes Collected ExciseTaxesCollected	374000000	USD
CY2020	us-gaap	Excise Taxes Collected ExciseTaxesCollected	362000000	USD
CY2019	us-gaap	Excise Taxes Collected ExciseTaxesCollected	373000000	USD
CY2021	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-48000000	USD
CY2020	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-59000000	USD
CY2019	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-5000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1283000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1079000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	912000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	14000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	34000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	31000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	1000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	1000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	2000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-13000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-33000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-29000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-3000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-8000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-8000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-10000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-25000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-21000000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1273000000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1054000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	891000000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1462000000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1734000000	USD
CY2021Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	49000000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	67000000	USD
CY2021Q4	us-gaap	Other Receivables OtherReceivables	246000000	USD
CY2020Q4	us-gaap	Other Receivables OtherReceivables	236000000	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	260000000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	317000000	USD
CY2021Q4	fe	Prepaid Taxesand Other PrepaidTaxesandOther	187000000	USD
CY2020Q4	fe	Prepaid Taxesand Other PrepaidTaxesandOther	157000000	USD
CY2021Q4	us-gaap	Assets Current AssetsCurrent	3237000000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	3714000000	USD
CY2021Q4	fe	Property Plant And Equipment Excluding Construction In Progress PropertyPlantAndEquipmentExcludingConstructionInProgress	46002000000	USD
CY2020Q4	fe	Property Plant And Equipment Excluding Construction In Progress PropertyPlantAndEquipmentExcludingConstructionInProgress	43654000000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	12672000000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	11938000000	USD
CY2021Q4	fe	Net Plant Excluding Construction Work In Progress NetPlantExcludingConstructionWorkInProgress	33330000000	USD
CY2020Q4	fe	Net Plant Excluding Construction Work In Progress NetPlantExcludingConstructionWorkInProgress	31716000000	USD
CY2021Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1414000000	USD
CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1578000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	34744000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	33294000000	USD
CY2021Q4	us-gaap	Disposal Group Including Discontinued Operation Property Plant And Equipment DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment	0	USD
CY2020Q4	us-gaap	Disposal Group Including Discontinued Operation Property Plant And Equipment DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment	45000000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	5618000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	5618000000	USD
CY2021Q4	us-gaap	Long Term Investments LongTermInvestments	655000000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	605000000	USD
CY2021Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	71000000	USD
CY2020Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	82000000	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1107000000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	1106000000	USD
CY2021Q4	us-gaap	Deferred Costs And Other Assets DeferredCostsAndOtherAssets	7451000000	USD
CY2020Q4	us-gaap	Deferred Costs And Other Assets DeferredCostsAndOtherAssets	7411000000	USD
CY2021Q4	us-gaap	Assets Assets	45432000000	USD
CY2020Q4	us-gaap	Assets Assets	44464000000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1606000000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	146000000	USD
CY2021Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	2200000000	USD
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	943000000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	827000000	USD
CY2021Q4	us-gaap	Interest Payable Current InterestPayableCurrent	283000000	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	282000000	USD
CY2021Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	647000000	USD
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	640000000	USD
CY2021Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	313000000	USD
CY2020Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	349000000	USD
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	222000000	USD
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	212000000	USD
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	402000000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	348000000	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	4416000000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	5004000000	USD
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	700000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	700000000	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	570261104	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	543117533	shares
CY2021Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	57000000	USD
CY2020Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	54000000	USD
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	10238000000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	10076000000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-15000000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5000000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1605000000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-2888000000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8675000000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7237000000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	22248000000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	22131000000	USD
CY2021Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	30923000000	USD
CY2020Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	29368000000	USD
CY2021Q4	fe	Deferred Income Tax Liabilities Net Noncurrent DeferredIncomeTaxLiabilitiesNetNoncurrent	3437000000	USD
CY2020Q4	fe	Deferred Income Tax Liabilities Net Noncurrent DeferredIncomeTaxLiabilitiesNetNoncurrent	3095000000	USD
CY2021Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	2669000000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3345000000	USD
CY2021Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	2124000000	USD
CY2020Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1826000000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1863000000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1826000000	USD
CY2021Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	10093000000	USD
CY2020Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	10092000000	USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	45432000000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	44464000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	6814000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	912000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-21000000	USD
CY2019	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	41000000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.56
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	824000000	USD
CY2019	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	3000000	USD
CY2019	fe	Stock Issued During Period Value Stock Investment And Employee Benefit Plan StockIssuedDuringPeriodValueStockInvestmentAndEmployeeBenefitPlan	56000000	USD
CY2019	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	0	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	6975000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1079000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-25000000	USD
CY2020	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	26000000	USD
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	846000000	USD
CY2020	fe	Stock Issued During Period Value Stock Investment And Employee Benefit Plan StockIssuedDuringPeriodValueStockInvestmentAndEmployeeBenefitPlan	28000000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	7237000000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1283000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-10000000	USD
CY2021	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	26000000	USD
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	859000000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	974000000	USD
CY2021	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	24000000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	8675000000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1601000000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.56
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.53
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1283000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1079000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	912000000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1199000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1217000000	USD
CY2021	us-gaap	Payments For Postemployment Benefits PaymentsForPostemploymentBenefits	417000000	USD
CY2020	us-gaap	Payments For Postemployment Benefits PaymentsForPostemploymentBenefits	301000000	USD
CY2019	us-gaap	Payments For Postemployment Benefits PaymentsForPostemploymentBenefits	108000000	USD
CY2021	fe	Defined Benefit Plan Plan Assets Period Increase Decrease Including Discontinued Operations DefinedBenefitPlanPlanAssetsPeriodIncreaseDecreaseIncludingDiscontinuedOperations	-382000000	USD
CY2020	fe	Defined Benefit Plan Plan Assets Period Increase Decrease Including Discontinued Operations DefinedBenefitPlanPlanAssetsPeriodIncreaseDecreaseIncludingDiscontinuedOperations	477000000	USD
CY2019	fe	Defined Benefit Plan Plan Assets Period Increase Decrease Including Discontinued Operations DefinedBenefitPlanPlanAssetsPeriodIncreaseDecreaseIncludingDiscontinuedOperations	676000000	USD
CY2021	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	297000000	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	113000000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	252000000	USD
CY2021	fe	Removal Costs RemovalCosts	0	USD
CY2020	fe	Removal Costs RemovalCosts	36000000	USD
CY2019	fe	Removal Costs RemovalCosts	28000000	USD
CY2021	us-gaap	Unrealized Gain Loss On Commodity Contracts UnrealizedGainLossOnCommodityContracts	-182000000	USD
CY2020	us-gaap	Unrealized Gain Loss On Commodity Contracts UnrealizedGainLossOnCommodityContracts	32000000	USD
CY2019	us-gaap	Unrealized Gain Loss On Commodity Contracts UnrealizedGainLossOnCommodityContracts	55000000	USD
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	109000000	USD
CY2020	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
CY2021	us-gaap	Pension Contributions PensionContributions	0	USD
CY2020	us-gaap	Pension Contributions PensionContributions	0	USD
CY2019	us-gaap	Pension Contributions PensionContributions	500000000	USD
CY2021	fe	Amount Paidto Settle Agreementsand Tax Sharing Paymentsto Subsidiary Debtors AmountPaidtoSettleAgreementsandTaxSharingPaymentstoSubsidiaryDebtors	0	USD
CY2020	fe	Amount Paidto Settle Agreementsand Tax Sharing Paymentsto Subsidiary Debtors AmountPaidtoSettleAgreementsandTaxSharingPaymentstoSubsidiaryDebtors	978000000	USD
CY2019	fe	Amount Paidto Settle Agreementsand Tax Sharing Paymentsto Subsidiary Debtors AmountPaidtoSettleAgreementsandTaxSharingPaymentstoSubsidiaryDebtors	0	USD
CY2021	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	47000000	USD
CY2020	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	76000000	USD
CY2019	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	59000000	USD
CY2021	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-160000000	USD
CY2020	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	129000000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-271000000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-57000000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	32000000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	37000000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-18000000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-6000000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-10000000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	117000000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-138000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-49000000	USD
CY2021	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	7000000	USD
CY2020	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	159000000	USD
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	12000000	USD
CY2021	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	0	USD
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	33000000	USD
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	6000000	USD
CY2021	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-36000000	USD
CY2020	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	97000000	USD
CY2019	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-60000000	USD
CY2021	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-16000000	USD
CY2020	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-16000000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-21000000	USD
CY2021	fe	Increase Decrease In Collateral IncreaseDecreaseInCollateral	31000000	USD
CY2020	fe	Increase Decrease In Collateral IncreaseDecreaseInCollateral	-12000000	USD
CY2019	fe	Increase Decrease In Collateral IncreaseDecreaseInCollateral	-10000000	USD
CY2021	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	65000000	USD
CY2020	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-62000000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-18000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2811000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1423000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2467000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2100000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3425000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2300000000	USD
CY2021	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2020	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	1200000000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1000000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	532000000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1114000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	789000000	USD
CY2021	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	2200000000	USD
CY2020	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	0	USD
CY2019	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	0	USD
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	6000000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	849000000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	845000000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	814000000	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-61000000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-59000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-35000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-542000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2607000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	656000000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2445000000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2657000000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2665000000	USD
CY2021	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	155000000	USD
CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	48000000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	186000000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1637000000	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	59000000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	208000000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1675000000	USD
CY2021	us-gaap	Payments For Removal Costs PaymentsForRemovalCosts	226000000	USD
CY2020	us-gaap	Payments For Removal Costs PaymentsForRemovalCosts	224000000	USD
CY2019	us-gaap	Payments For Removal Costs PaymentsForRemovalCosts	217000000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	32000000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	5000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-47000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2559000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2908000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2873000000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-290000000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1122000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	250000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1801000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	679000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	429000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1511000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1801000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	679000000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	1085000000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	970000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	960000000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-7000000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	12000000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	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 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.
CY2021Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	-2053000000	USD
CY2020Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	-1744000000	USD
CY2020Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	789000000	USD
CY2021	fe	Increase Decreasein Regulatory Assets IncreaseDecreaseinRegulatoryAssets	-57000000	USD
CY2021	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-309000000	USD
CY2021Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	732000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1239000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1003000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	904000000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3000000	USD
CY2019	us-gaap	Undistributed Continuing Operation Earnings Loss Allocation To Participating Securities Basic UndistributedContinuingOperationEarningsLossAllocationToParticipatingSecuritiesBasic	1000000	USD
CY2021	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	1239000000	USD
CY2020	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	1003000000	USD
CY2019	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	900000000	USD
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	44000000	USD
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	76000000	USD
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	8000000	USD
CY2019	us-gaap	Undistributed Discontinued Operation Earnings Loss Allocation To Participating Securities Basic UndistributedDiscontinuedOperationEarningsLossAllocationToParticipatingSecuritiesBasic	0	USD
CY2021	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	44000000	USD
CY2020	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	76000000	USD
CY2019	us-gaap	Net Income Loss From Discontinued Operations Available To Common Shareholders Basic NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic	8000000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1283000000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1079000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	908000000	USD
CY2019	us-gaap	Dilutive Securities DilutiveSecurities	4000000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1283000000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1079000000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	912000000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	545000000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	542000000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	535000000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3000000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	4000000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	546000000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	543000000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	542000000	shares
CY2021	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.27
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.85
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.69
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.08
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.14
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.35
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.99
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.70
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.27
CY2020	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.85
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.67
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.08
CY2020	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.14
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.35
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.99
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.68
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2021Q4	us-gaap	Goodwill Goodwill	5618000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	46002000000	USD
CY2021Q4	fe	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Including Disposal Group Including Discontinued Operations Assets Held For Sale AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentIncludingDisposalGroupIncludingDiscontinuedOperationsAssetsHeldForSale	12672000000	USD
CY2021Q4	fe	Net Plant Excluding Construction Work In Progress Including Assets Held For Sale NetPlantExcludingConstructionWorkInProgressIncludingAssetsHeldForSale	33330000000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	1414000000	USD
CY2021Q4	fe	Property Plant And Equipment Net Including Assets Held For Sale PropertyPlantAndEquipmentNetIncludingAssetsHeldForSale	34744000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	43726000000	USD
CY2020Q4	fe	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Including Disposal Group Including Discontinued Operations Assets Held For Sale AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentIncludingDisposalGroupIncludingDiscontinuedOperationsAssetsHeldForSale	11965000000	USD
CY2020Q4	fe	Net Plant Excluding Construction Work In Progress Including Assets Held For Sale NetPlantExcludingConstructionWorkInProgressIncludingAssetsHeldForSale	31761000000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	1578000000	USD
CY2020Q4	fe	Property Plant And Equipment Net Including Assets Held For Sale PropertyPlantAndEquipmentNetIncludingAssetsHeldForSale	33339000000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	143000000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	153000000	USD
CY2021	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.027
CY2020	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.027
CY2019	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.027
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	48000000	USD
CY2020	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	49000000	USD
CY2019	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity	45000000	USD
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	27000000	USD
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	28000000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	26000000	USD
CY2020Q4	us-gaap	Fair Value Concentration Of Risk Accounts Receivable FairValueConcentrationOfRiskAccountsReceivable	0	USD
CY2021Q4	us-gaap	Fair Value Concentration Of Risk Accounts Receivable FairValueConcentrationOfRiskAccountsReceivable	0	USD
CY2021Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	1192000000	USD
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	1367000000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	159000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	164000000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1033000000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1203000000	USD
CY2021Q4	fe	Allowance For Loan And Loss Deferred Recovery Of Bad Debts AllowanceForLoanAndLossDeferredRecoveryOfBadDebts	12000000	USD
CY2020Q4	fe	Allowance For Loan And Loss Deferred Recovery Of Bad Debts AllowanceForLoanAndLossDeferredRecoveryOfBadDebts	103000000	USD
CY2019Q4	fe	Allowance For Loan And Loss Deferred Recovery Of Bad Debts AllowanceForLoanAndLossDeferredRecoveryOfBadDebts	25000000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	121000000	USD
CY2021	fe	Number Of Variable Interest Contracts NumberOfVariableInterestContracts	1	entity
CY2021	fe	Number Of Variable Interest Contracts NumberOfVariableInterestContracts	1	entity
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	11112000000	USD
CY2021	us-gaap	Revenues Revenues	11132000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10701000000	USD
CY2020	us-gaap	Revenues Revenues	10790000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10805000000	USD
CY2019	us-gaap	Revenues Revenues	11035000000	USD
CY2021	fe	Revenuefrom Contractwith Customer Utility Customer Payment Period RevenuefromContractwithCustomerUtilityCustomerPaymentPeriod	P30D
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-2000000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	27000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-29000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-8000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-21000000	USD
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	33000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-33000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-8000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-25000000	USD
CY2021	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	13000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-13000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-3000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-10000000	USD
CY2021	fe	Defined Benefit Plan Markto Market Adjustment Net DefinedBenefitPlanMarktoMarketAdjustmentNet	-382000000	USD
CY2020	fe	Defined Benefit Plan Markto Market Adjustment Net DefinedBenefitPlanMarktoMarketAdjustmentNet	477000000	USD
CY2020Q1	fe	Defined Benefit Plan Markto Market Adjustment Net DefinedBenefitPlanMarktoMarketAdjustmentNet	423000000	USD
CY2019	fe	Defined Benefit Plan Markto Market Adjustment Net DefinedBenefitPlanMarktoMarketAdjustmentNet	676000000	USD
CY2020Q1	fe	Defined Benefit Plan Markto Market Adjustment Net DefinedBenefitPlanMarktoMarketAdjustmentNet	423000000	USD
CY2020Q4	fe	Defined Benefit Plan Markto Market Adjustment Net DefinedBenefitPlanMarktoMarketAdjustmentNet	54000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1
CY2020Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	10000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	20000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	24000000	USD
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost1 SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1	90000000	USD
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost1 SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1	51000000	USD
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost1 SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1	116000000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	47000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	26000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	54000000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10000000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Based Liabilities Paid ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsShareBasedLiabilitiesPaid	11000000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	91000000	USD
CY2021	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	130000	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	34000000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	80000000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2000000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-14000000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-16000000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	21000000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	21000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	24000000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	23000000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7000000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8000000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	174000000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	171000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	150000000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	127000000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-38000000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	60000000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	301000000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	133000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	210000000	USD
CY2021	fe	Investment Tax Credit Amortization InvestmentTaxCreditAmortization	4000000	USD
CY2020	fe	Investment Tax Credit Amortization InvestmentTaxCreditAmortization	14000000	USD
CY2019	fe	Investment Tax Credit Amortization InvestmentTaxCreditAmortization	5000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	320000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	126000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	213000000	USD
CY2021	fe	Book Income Before Provision For Income Taxes BookIncomeBeforeProvisionForIncomeTaxes	1559000000	USD
CY2020	fe	Book Income Before Provision For Income Taxes BookIncomeBeforeProvisionForIncomeTaxes	1129000000	USD
CY2019	fe	Book Income Before Provision For Income Taxes BookIncomeBeforeProvisionForIncomeTaxes	1117000000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	327000000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	237000000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	235000000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	122000000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	75000000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	96000000	USD
CY2021	fe	Effective Income Tax Rate Reconciliation Allowancefor Funds Used During Construction Equity And Other Flowthrough EffectiveIncomeTaxRateReconciliationAllowanceforFundsUsedDuringConstructionEquityAndOtherFlowthrough	29000000	USD
CY2020	fe	Effective Income Tax Rate Reconciliation Allowancefor Funds Used During Construction Equity And Other Flowthrough EffectiveIncomeTaxRateReconciliationAllowanceforFundsUsedDuringConstructionEquityAndOtherFlowthrough	38000000	USD
CY2019	fe	Effective Income Tax Rate Reconciliation Allowancefor Funds Used During Construction Equity And Other Flowthrough EffectiveIncomeTaxRateReconciliationAllowanceforFundsUsedDuringConstructionEquityAndOtherFlowthrough	36000000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	4000000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	14000000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	5000000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	34000000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	0	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	0	USD
CY2021	fe	Effective Income Tax Rate Reconciliation Nondeductible Expense Settlement Penalty EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSettlementPenalty	52000000	USD
CY2020	fe	Effective Income Tax Rate Reconciliation Nondeductible Expense Settlement Penalty EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSettlementPenalty	0	USD
CY2019	fe	Effective Income Tax Rate Reconciliation Nondeductible Expense Settlement Penalty EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSettlementPenalty	0	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-54000000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-56000000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-74000000	USD
CY2021	fe	Income Tax Reconciliation Reversal Of Regulatory Liabilities Amount IncomeTaxReconciliationReversalOfRegulatoryLiabilitiesAmount	0	USD
CY2020	fe	Income Tax Reconciliation Reversal Of Regulatory Liabilities Amount IncomeTaxReconciliationReversalOfRegulatoryLiabilitiesAmount	40000000	USD
CY2019	fe	Income Tax Reconciliation Reversal Of Regulatory Liabilities Amount IncomeTaxReconciliationReversalOfRegulatoryLiabilitiesAmount	0	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-82000000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-1000000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	-11000000	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	17000000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-49000000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	5000000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	5000000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	12000000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	3000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	320000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	126000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	213000000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.205
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.112
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.191
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.205
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.112
CY2020	fe	Effective Income Tax Rate Reconciliation Tax Credit Decrease In Amortization Benefit Amount EffectiveIncomeTaxRateReconciliationTaxCreditDecreaseInAmortizationBenefitAmount	10000000	USD
CY2020	fe	Income Tax Reconciliation Reversal Of Regulatory Liabilities Amount IncomeTaxReconciliationReversalOfRegulatoryLiabilitiesAmount	40000000	USD
CY2021	fe	Unrecognized Tax Benefits Increase Resultingfrom Changein Worthless Stock Deduction Reserve Gross UnrecognizedTaxBenefitsIncreaseResultingfromChangeinWorthlessStockDeductionReserveGross	81000000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	34000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Parents Basis In Discontinued Operation DeferredTaxLiabilitiesParentsBasisInDiscontinuedOperation	5670000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Parents Basis In Discontinued Operation DeferredTaxLiabilitiesParentsBasisInDiscontinuedOperation	5396000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	570000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	769000000	USD
CY2021Q4	fe	Deferred Tax Assets Liabilities Net Asset Retirement Obligation Liability DeferredTaxAssetsLiabilitiesNetAssetRetirementObligationLiability	21000000	USD
CY2020Q4	fe	Deferred Tax Assets Liabilities Net Asset Retirement Obligation Liability DeferredTaxAssetsLiabilitiesNetAssetRetirementObligationLiability	28000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	322000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	440000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	155000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	165000000	USD
CY2021Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forwards And Tax Credits DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardsAndTaxCredits	2040000000	USD
CY2020Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forwards And Tax Credits DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardsAndTaxCredits	1995000000	USD
CY2021Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	484000000	USD
CY2020Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	496000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	253000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	280000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3437000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	3095000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration	6900000000	USD
CY2021Q4	fe	Deferred Tax Assets Operating Loss Carryforwards Subject To Expiration Net Of Tax DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpirationNetOfTax	1500000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Not Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration	11900000000	USD
CY2021Q4	fe	Deferred Tax Assets Operating Loss Carryforwards Not Subject To Expiration Net Of Tax DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpirationNetOfTax	544000000	USD
CY2021Q4	fe	Pretax Net Operating Loss Carryforwards Expected To Utilized PretaxNetOperatingLossCarryforwardsExpectedToUtilized	2700000000	USD
CY2021Q4	fe	Operating Loss Carryforwards Expected To Utilized Netof Tax OperatingLossCarryforwardsExpectedToUtilizedNetofTax	136000000	USD
CY2020Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	496000000	USD
CY2019Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	441000000	USD
CY2018Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	394000000	USD
CY2021	fe	Operating Loss Carryforward Valuation Allowance Reserve Charged To Income OperatingLossCarryforwardValuationAllowanceReserveChargedToIncome	-12000000	USD
CY2020	fe	Operating Loss Carryforward Valuation Allowance Reserve Charged To Income OperatingLossCarryforwardValuationAllowanceReserveChargedToIncome	55000000	USD
CY2019	fe	Operating Loss Carryforward Valuation Allowance Reserve Charged To Income OperatingLossCarryforwardValuationAllowanceReserveChargedToIncome	47000000	USD
CY2021	fe	Operating Loss Carryfroward Valuation Allowance Reserve Charged To Other Accounts OperatingLossCarryfrowardValuationAllowanceReserveChargedToOtherAccounts	0	USD
CY2020	fe	Operating Loss Carryfroward Valuation Allowance Reserve Charged To Other Accounts OperatingLossCarryfrowardValuationAllowanceReserveChargedToOtherAccounts	0	USD
CY2019	fe	Operating Loss Carryfroward Valuation Allowance Reserve Charged To Other Accounts OperatingLossCarryfrowardValuationAllowanceReserveChargedToOtherAccounts	0	USD
CY2021	fe	Operating Loss Carryfroward Valuation Allowance Reserve Written Off OperatingLossCarryfrowardValuationAllowanceReserveWrittenOff	0	USD
CY2020	fe	Operating Loss Carryfroward Valuation Allowance Reserve Written Off OperatingLossCarryfrowardValuationAllowanceReserveWrittenOff	0	USD
CY2019	fe	Operating Loss Carryfroward Valuation Allowance Reserve Written Off OperatingLossCarryfrowardValuationAllowanceReserveWrittenOff	0	USD
CY2021Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	484000000	USD
CY2020Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	496000000	USD
CY2019Q4	fe	Deferred Tax Assets Liabilities Net Non Current Loss Carry Forward Valuation Reserve DeferredTaxAssetsLiabilitiesNetNonCurrentLossCarryForwardValuationReserve	441000000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	47000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	139000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-92000000	USD
CY2021	fe	Unrecognized Tax Benefits Decrease Resulting From Change In Worthless Stock Deduction Reserve Net Of Tax UnrecognizedTaxBenefitsDecreaseResultingFromChangeInWorthlessStockDeductionReserveNetOfTax	68000000	USD
CY2021	fe	Unrecognized Tax Benefits Decrease Resultingfrom Nondeductible Interest UnrecognizedTaxBenefitsDecreaseResultingfromNondeductibleInterest	29000000	USD
CY2021	fe	Unrecognized Tax Benefits Decrease Resulting From Tax Rate Changes UnrecognizedTaxBenefitsDecreaseResultingFromTaxRateChanges	1000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	15000000	USD
CY2021Q4	fe	Unrecognized Tax Benefitsthat Would Impact Effective Tax Rate Future Years UnrecognizedTaxBenefitsthatWouldImpactEffectiveTaxRateFutureYears	39000000	USD
CY2021Q4	fe	Unrecognized Tax Benefits Portion Expected To Be Resolved In Next Fiscal Year UnrecognizedTaxBenefitsPortionExpectedToBeResolvedInNextFiscalYear	31000000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	24000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	158000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	22000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	12000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	4000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	164000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	7000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	28000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	2000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	139000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	15000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	8000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	97000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2000000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	47000000	USD
CY2021	fe	Excise Taxes Energy Generation ExciseTaxesEnergyGeneration	189000000	USD
CY2020	fe	Excise Taxes Energy Generation ExciseTaxesEnergyGeneration	183000000	USD
CY2019	fe	Excise Taxes Energy Generation ExciseTaxesEnergyGeneration	191000000	USD
CY2021	fe	Taxes Gross Receipts Stateand Local TaxesGrossReceiptsStateandLocal	190000000	USD
CY2020	fe	Taxes Gross Receipts Stateand Local TaxesGrossReceiptsStateandLocal	182000000	USD
CY2019	fe	Taxes Gross Receipts Stateand Local TaxesGrossReceiptsStateandLocal	185000000	USD
CY2021	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	571000000	USD
CY2020	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	541000000	USD
CY2019	us-gaap	Real Estate Taxes And Insurance RealEstateTaxesAndInsurance	504000000	USD
CY2021	fe	Taxes Social Securityand Unemployment TaxesSocialSecurityandUnemployment	103000000	USD
CY2020	fe	Taxes Social Securityand Unemployment TaxesSocialSecurityandUnemployment	112000000	USD
CY2019	fe	Taxes Social Securityand Unemployment TaxesSocialSecurityandUnemployment	100000000	USD
CY2021	us-gaap	Taxes Other TaxesOther	20000000	USD
CY2020	us-gaap	Taxes Other TaxesOther	28000000	USD
CY2019	us-gaap	Taxes Other TaxesOther	28000000	USD
CY2021	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1073000000	USD
CY2020	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1046000000	USD
CY2019	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1008000000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	71000000	USD
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	14000000	USD
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	4000000	USD
CY2021	fe	Finance Lease Cost FinanceLeaseCost	18000000	USD
CY2021	us-gaap	Lease Cost LeaseCost	89000000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	21000000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	60000000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	15000000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	5000000	USD
CY2020	fe	Finance Lease Cost FinanceLeaseCost	20000000	USD
CY2020	us-gaap	Lease Cost LeaseCost	80000000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	17000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	49000000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	17000000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	6000000	USD
CY2019	fe	Finance Lease Cost FinanceLeaseCost	23000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	72000000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	13000000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	64000000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	44000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	29000000	USD
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	4000000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	4000000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	5000000	USD
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	13000000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	15000000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	25000000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	60000000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	67000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	83000000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	5000000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	3000000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y11M19D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y6M18D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y5M1D
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P8Y1M13D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P7Y8M26D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P4Y7M13D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0416
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0421
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0451
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.1222
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.1158
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.1045
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	279000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	265000000	USD
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	48000000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	57000000	USD
CY2021Q4	fe	Leased Asset LeasedAsset	327000000	USD
CY2020Q4	fe	Leased Asset LeasedAsset	322000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	39000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	42000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	13000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	14000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	271000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	263000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	23000000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	31000000	USD
CY2021Q4	fe	Lease Obligations LeaseObligations	346000000	USD
CY2020Q4	fe	Lease Obligations LeaseObligations	350000000	USD
CY2021Q4	fe	Operating Lease Rightof Use Asset Accumulated Amortization OperatingLeaseRightofUseAssetAccumulatedAmortization	79000000	USD
CY2020Q4	fe	Operating Lease Rightof Use Asset Accumulated Amortization OperatingLeaseRightofUseAssetAccumulatedAmortization	51000000	USD
CY2021Q4	fe	Financing Lease Rightof Use Asset Accumulated Amortization FinancingLeaseRightofUseAssetAccumulatedAmortization	95000000	USD
CY2020Q4	fe	Financing Lease Rightof Use Asset Accumulated Amortization FinancingLeaseRightofUseAssetAccumulatedAmortization	96000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	16000000	USD
CY2021Q4	fe	Lessee Lease Liability Payments Next Twelve Months LesseeLeaseLiabilityPaymentsNextTwelveMonths	70000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	54000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	54000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	9000000	USD
CY2021Q4	fe	Lessee Lease Liability Payments Due Year Two LesseeLeaseLiabilityPaymentsDueYearTwo	63000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	48000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	5000000	USD
CY2021Q4	fe	Lessee Lease Liability Payments Due Year Three LesseeLeaseLiabilityPaymentsDueYearThree	53000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	45000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	5000000	USD
CY2021Q4	fe	Lessee Lease Liability Payments Due Year Four LesseeLeaseLiabilityPaymentsDueYearFour	50000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	41000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	5000000	USD
CY2021Q4	fe	Lessee Lease Liability Payments Due Year Five LesseeLeaseLiabilityPaymentsDueYearFive	46000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	133000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	8000000	USD
CY2021Q4	fe	Lessee Lease Liability Payments Due After Year Five LesseeLeaseLiabilityPaymentsDueAfterYearFive	141000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	375000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	48000000	USD
CY2021Q4	fe	Lessee Lease Liability Payments Due LesseeLeaseLiabilityPaymentsDue	423000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	65000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	12000000	USD
CY2021Q4	fe	Lessee Lease Liability Payments Imputed Interest LesseeLeaseLiabilityPaymentsImputedInterest	77000000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	310000000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	36000000	USD
CY2021Q4	fe	Lessee Lease Liability LesseeLeaseLiability	346000000	USD
CY2021	us-gaap	Sublease Income SubleaseIncome	10000000	USD
CY2021	fe	Lessee Operating Lease Sublease Income Term LesseeOperatingLeaseSubleaseIncomeTerm	P11Y
CY2021Q4	fe	Lessee Operating Lease Lease Notyet Commenced Amount LesseeOperatingLeaseLeaseNotyetCommencedAmount	5000000	USD
CY2021	fe	Lessee Operating Lease Lease Notyet Commenced Expected Commencement Period LesseeOperatingLeaseLeaseNotyetCommencedExpectedCommencementPeriod	P18M
CY2021Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	49000000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	67000000	USD
CY2020Q4	fe	Investments Excludes Receivables Payables Deferred Taxes And Accrued Income InvestmentsExcludesReceivablesPayablesDeferredTaxesAndAccruedIncome	1000000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	11000000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	9000000	USD
CY2021	fe	Debtand Equity Securities Realized Gain Loss Sales Proceeds DebtandEquitySecuritiesRealizedGainLossSalesProceeds	48000000	USD
CY2020	fe	Debtand Equity Securities Realized Gain Loss Sales Proceeds DebtandEquitySecuritiesRealizedGainLossSalesProceeds	186000000	USD
CY2019	fe	Debtand Equity Securities Realized Gain Loss Sales Proceeds DebtandEquitySecuritiesRealizedGainLossSalesProceeds	1637000000	USD
CY2021	fe	Debtand Equity Securities Realized Gains DebtandEquitySecuritiesRealizedGains	0	USD
CY2020	fe	Debtand Equity Securities Realized Gains DebtandEquitySecuritiesRealizedGains	12000000	USD
CY2019	fe	Debtand Equity Securities Realized Gains DebtandEquitySecuritiesRealizedGains	98000000	USD
CY2021	fe	Debtand Equity Securities Realized Losses DebtandEquitySecuritiesRealizedLosses	3000000	USD
CY2020	fe	Debtand Equity Securities Realized Losses DebtandEquitySecuritiesRealizedLosses	8000000	USD
CY2019	fe	Debtand Equity Securities Realized Losses DebtandEquitySecuritiesRealizedLosses	31000000	USD
CY2021	fe	Investment Income From Trusts InvestmentIncomeFromTrusts	11000000	USD
CY2020	fe	Investment Income From Trusts InvestmentIncomeFromTrusts	22000000	USD
CY2019	fe	Investment Income From Trusts InvestmentIncomeFromTrusts	38000000	USD
CY2021Q4	fe	Investments Not Required To Be Disclosed InvestmentsNotRequiredToBeDisclosed	371000000	USD
CY2020Q4	fe	Investments Not Required To Be Disclosed InvestmentsNotRequiredToBeDisclosed	322000000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1600000000	USD
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	100
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.56
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.56
CY2020Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.39
CY2020Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.39
CY2021Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.39
CY2021Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.39
CY2021Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.39
CY2020Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.39
CY2020Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.39
CY2021Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.39
CY2021Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.39
CY2021	fe	Minimum Equity To Total Capitalization Ratio To Be Maintained For Payment Of Capital Dividend MinimumEquityToTotalCapitalizationRatioToBeMaintainedForPaymentOfCapitalDividend	0.35
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021Q4	fe	Preference Stock Shares Outstanding PreferenceStockSharesOutstanding	0	shares
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	fe	Preference Stock Shares Outstanding PreferenceStockSharesOutstanding	0	shares
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	36000000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	45000000	USD
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	8000000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	34000000	USD
CY2021Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	126000000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	118000000	USD
CY2021Q4	fe	Debt Instrument Unamortized Merger Fair Value Adjustments DebtInstrumentUnamortizedMergerFairValueAdjustments	6000000	USD
CY2020Q4	fe	Debt Instrument Unamortized Merger Fair Value Adjustments DebtInstrumentUnamortizedMergerFairValueAdjustments	7000000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1606000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	146000000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	22248000000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	22131000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1593000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	344000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1246000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	2023000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1076000000	USD
CY2021	fe	Number Of Subsidiaries That Issued Environmental Control Bonds NumberOfSubsidiariesThatIssuedEnvironmentalControlBonds	2	subsidiary
CY2021Q4	us-gaap	Longterm Pollution Control Bond Current And Noncurrent LongtermPollutionControlBondCurrentAndNoncurrent	274000000	USD
CY2020Q4	us-gaap	Longterm Pollution Control Bond Current And Noncurrent LongtermPollutionControlBondCurrentAndNoncurrent	300000000	USD
CY2021	fe	Principal Default Amount Specified In Debt Covenants PrincipalDefaultAmountSpecifiedInDebtCovenants	100000000	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	2200000000	USD
CY2021Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0242
CY2020Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0186
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	856000000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	744000000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	47000000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	159000000	USD
CY2021	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	8000000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	1000000	USD
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	13000000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	179000000	USD
CY2021Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	1100000000	USD
CY2021Q4	fe	Company Posted Collateral Related To Net Liability Positions CompanyPostedCollateralRelatedToNetLiabilityPositions	55000000	USD
CY2021Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	359000000	USD
CY2020Q1	fe	Disposal Group Including Discontinued Operation Worthless Stock Deduction DisposalGroupIncludingDiscontinuedOperationWorthlessStockDeduction	4900000000	USD
CY2020Q1	fe	Unrecognized Tax Benefits Increase Resultingfrom Changein Worthless Stock Deduction Reserve Gross UnrecognizedTaxBenefitsIncreaseResultingfromChangeinWorthlessStockDeductionReserveGross	316000000	USD
CY2021Q4	fe	Disposal Group Including Discontinued Operation Worthless Stock Deduction DisposalGroupIncludingDiscontinuedOperationWorthlessStockDeduction	5200000000	USD
CY2021Q4	fe	Disposal Group Including Discontinued Operation Worthless Stock Deduction Netof Tax DisposalGroupIncludingDiscontinuedOperationWorthlessStockDeductionNetofTax	1100000000	USD
CY2021Q3	fe	Operating Loss Carryforwards Increase During Period OperatingLossCarryforwardsIncreaseDuringPeriod	289000000	USD
CY2021Q4	fe	Deferred Tax Assets Increase In Operating Loss Carryforwards During Period DeferredTaxAssetsIncreaseInOperatingLossCarryforwardsDuringPeriod	61000000	USD
CY2021	us-gaap	Revenues Revenues	11132000000	USD
CY2021	us-gaap	Depreciation Depreciation	1302000000	USD
CY2021	fe	Amortization Deferral Of Regulatory Asset AmortizationDeferralOfRegulatoryAsset	269000000	USD
CY2021	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-230000000	USD
CY2021	us-gaap	Investment Income Net InvestmentIncomeNet	517000000	USD
CY2021	us-gaap	Interest Expense InterestExpense	1141000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	320000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1239000000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2445000000	USD
CY2020	us-gaap	Revenues Revenues	10790000000	USD
CY2020	us-gaap	Depreciation Depreciation	1274000000	USD
CY2020	fe	Amortization Deferral Of Regulatory Asset AmortizationDeferralOfRegulatoryAsset	-53000000	USD
CY2020	us-gaap	Investment Income Net InvestmentIncomeNet	432000000	USD
CY2020	us-gaap	Interest Expense InterestExpense	1065000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	126000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1003000000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2657000000	USD
CY2019	us-gaap	Revenues Revenues	11035000000	USD
CY2019	us-gaap	Depreciation Depreciation	1220000000	USD
CY2019	fe	Amortization Deferral Of Regulatory Asset AmortizationDeferralOfRegulatoryAsset	-79000000	USD
CY2019	us-gaap	Investment Income Net InvestmentIncomeNet	243000000	USD
CY2019	us-gaap	Interest Expense InterestExpense	1033000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	213000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	904000000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2665000000	USD
CY2021Q4	us-gaap	Assets Assets	45432000000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	5618000000	USD
CY2020Q4	us-gaap	Assets Assets	44464000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	5618000000	USD
CY2021	dei	Auditor Firm AuditorFirmId	238

Files In Submission

Name	View Source	Status
0001031296-22-000013-index-headers.html	Edgar Link	pending
0001031296-22-000013-index.html	Edgar Link	pending
0001031296-22-000013.txt	Edgar Link	pending
0001031296-22-000013-xbrl.zip	Edgar Link	pending
fe-12312021xex10x10.htm	Edgar Link	pending
fe-12312021xex21.htm	Edgar Link	pending
fe-12312021xex23.htm	Edgar Link	pending
fe-12312021xex311.htm	Edgar Link	pending
fe-12312021xex312.htm	Edgar Link	pending
fe-12312021xex32.htm	Edgar Link	pending
fe-20211231.htm	Edgar Link	pending
fe-20211231.xsd	Edgar Link	pending
fe-20211231_cal.xml	Edgar Link	unprocessable
fe-20211231_def.xml	Edgar Link	unprocessable
fe-20211231_g1.jpg	Edgar Link	pending
fe-20211231_g2.jpg	Edgar Link	pending
fe-20211231_htm.xml	Edgar Link	completed
fe-20211231_lab.xml	Edgar Link	unprocessable
fe-20211231_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.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

2021 Q4 Form 10-K Financial Statement

#000103129622000013 Filed on February 16, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FE FirstEnergy Corp Stock $fe

2021 Q4 Form 10-K Financial Statement

#000103129622000013 Filed on February 16, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FE
FirstEnergy Corp Stock $fe