$ED
CONSOLIDATED EDISON INC Stock $ed

$ed Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000104786222000039 Filed on February 17, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$3.415B	$13.68B	$2.960B
YoY Change	15.37%	11.68%	0.3%
Cost Of Revenue	$616.0M	$2.525B	$571.0M
YoY Change	7.88%	18.71%	3.44%
Gross Profit	$2.799B	$11.15B	$2.389B
YoY Change	17.16%	10.2%	-0.42%
Gross Profit Margin	81.96%	81.54%	80.71%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$25.00M
YoY Change		4.17%
% of Gross Profit		0.22%
Depreciation & Amortization	$521.0M	$2.032B	$492.0M
YoY Change	5.89%	5.83%	14.15%
% of Gross Profit	18.61%	18.22%	20.59%
Operating Expenses	$2.102B	$10.85B	$1.882B
YoY Change	11.69%	13.12%	2.62%
Operating Profit	$697.0M	$2.826B	$507.0M
YoY Change	37.48%	6.48%	-10.27%
Interest Expense	-$238.0M	$905.0M	-$518.0M
YoY Change	-54.05%	-11.19%	160.3%
% of Operating Profit	-34.15%	32.02%	-102.17%
Other Income/Expense, Net	-$40.00M	-$538.0M	-$33.00M
YoY Change	21.21%	34.16%
Pretax Income	$182.0M	$1.383B	-$44.00M
YoY Change	-513.64%	12.07%	-112.02%
Income Tax	-$4.000M	$190.0M	-$93.00M
% Of Pretax Income	-2.2%	13.74%
Net Earnings	$224.0M	$1.346B	$43.00M
YoY Change	420.93%	22.25%	-85.42%
Net Earnings / Revenue	6.56%	9.84%	1.45%
Basic Earnings Per Share		$3.86
Diluted Earnings Per Share	$630.8K	$3.85	$127.3K
COMMON SHARES
Basic Shares Outstanding	353.7M shares	348.4M shares	334.9M shares
Diluted Shares Outstanding		349.4M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$992.0M	$992.0M	$1.272B
YoY Change	-22.01%	-22.01%	29.66%
Cash & Equivalents	$992.0M	$992.0M	$1.272B
Short-Term Investments
Other Short-Term Assets	$233.0M	$1.678B	$231.0M
YoY Change	0.87%	9.6%	15.5%
Inventory	$437.0M	$437.0M	$356.0M
Prepaid Expenses	$295.0M		$271.0M
Receivables	$1.943B	$1.943B	$1.701B
Other Receivables	$501.0M	$501.0M	$441.0M
Total Short-Term Assets	$5.551B	$5.551B	$5.301B
YoY Change	4.72%	4.72%	24.09%
LONG-TERM ASSETS
Property, Plant & Equipment	$48.60B	$49.41B	$46.56B
YoY Change	4.38%	4.25%	6.07%
Goodwill	$439.0M		$446.0M
YoY Change	-1.57%		0.0%
Intangibles	$1.293B		$1.460B
YoY Change	-11.44%		-6.23%
Long-Term Investments	$853.0M	$226.0M	$1.816B
YoY Change	-53.03%	-82.05%	-12.06%
Other Assets	$8.116B	$6.202B	$9.223B
YoY Change	-12.0%	-11.87%	17.45%
Total Long-Term Assets	$57.57B	$57.57B	$57.59B
YoY Change	-0.05%	-0.05%	7.04%
TOTAL ASSETS
Total Short-Term Assets	$5.551B	$5.551B	$5.301B
Total Long-Term Assets	$57.57B	$57.57B	$57.59B
Total Assets	$63.12B	$63.12B	$62.90B
YoY Change	0.35%	0.35%	8.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.497B	$1.497B	$1.475B
YoY Change	1.49%	1.49%	26.72%
Accrued Expenses	$377.0M	$377.0M	$353.0M
YoY Change	6.8%	6.8%	10.31%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$1.488B	$165.0M
YoY Change	-100.0%	-20.43%
Long-Term Debt Due	$440.0M	$440.0M	$1.967B
YoY Change	-77.63%	-77.64%	36.03%
Total Short-Term Liabilities	$5.427B	$5.427B	$7.354B
YoY Change	-26.2%	-26.2%	16.97%
LONG-TERM LIABILITIES
Long-Term Debt	$22.60B	$22.61B	$20.38B
YoY Change	10.9%	10.9%	10.01%
Other Long-Term Liabilities	$7.874B	$7.874B	$9.617B
YoY Change	-18.12%	-18.12%	8.99%
Total Long-Term Liabilities	$22.60B	$30.48B	$20.38B
YoY Change	10.9%	1.6%	35.41%
TOTAL LIABILITIES
Total Short-Term Liabilities	$5.427B	$5.427B	$7.354B
Total Long-Term Liabilities	$22.60B	$30.48B	$20.38B
Total Liabilities	$28.03B	$43.08B	$27.74B
YoY Change	1.06%	-2.2%	29.98%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$20.04B	$20.04B	$18.85B
YoY Change
Total Liabilities & Shareholders Equity	$63.12B	$63.12B	$62.90B
YoY Change	0.35%	0.35%	8.29%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$224.0M	$1.346B	$43.00M
YoY Change	420.93%	22.25%	-85.42%
Depreciation, Depletion And Amortization	$521.0M	$2.032B	$492.0M
YoY Change	5.89%	5.83%	14.15%
Cash From Operating Activities	$1.021B	$2.733B	$830.0M
YoY Change	23.01%	24.34%	-29.3%
INVESTING ACTIVITIES
Capital Expenditures	-$981.0M	$3.964B	-$1.152B
YoY Change	-14.84%	-2.96%	18.64%
Acquisitions
YoY Change
Other Investing Activities	-$66.00M	-$10.00M	-$88.00M
YoY Change	-25.0%	-54.55%	-220.55%
Cash From Investing Activities	-$1.047B	-$3.484B	-$1.240B
YoY Change	-15.56%	-17.52%	38.08%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$775.0M
YoY Change		21.09%
Debt Paid & Issued, Net		$1.960B
YoY Change		278.38%
Cash From Financing Activities	957.0M	$461.0M	1.532B
YoY Change	-37.53%	-79.47%	122.67%
NET CHANGE
Cash From Operating Activities	1.021B	$2.733B	830.0M
Cash From Investing Activities	-1.047B	-$3.484B	-1.240B
Cash From Financing Activities	957.0M	$461.0M	1.532B
Net Change In Cash	931.0M	-$290.0M	1.122B
YoY Change	-17.02%	-232.42%	16.39%
FREE CASH FLOW
Cash From Operating Activities	$1.021B	$2.733B	$830.0M
Capital Expenditures	-$981.0M	$3.964B	-$1.152B
Free Cash Flow	$2.002B	-$1.231B	$1.982B
YoY Change	1.01%	-34.76%	-7.6%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001047862
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LiabilitiesCurrent
CY2020Q4	us-gaap	Finance Lease Liability Current Statement Of Financial Position Extensible List FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LiabilitiesCurrent
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LiabilitiesOtherThanLongtermDebtNoncurrent
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LiabilitiesOtherThanLongtermDebtNoncurrent
CY2021Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LiabilitiesOtherThanLongtermDebtNoncurrent http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2020Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#LiabilitiesOtherThanLongtermDebtNoncurrent http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P2Y
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	1-14514
CY2021	dei	Entity Registrant Name EntityRegistrantName	Consolidated Edison, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NY
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-3965100
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	4 Irving Place,
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	New York,
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	10003
CY2021	dei	City Area Code CityAreaCode	(212)
CY2021	dei	Local Phone Number LocalPhoneNumber	460-4600
CY2021	dei	Trading Symbol TradingSymbol	ED
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Security12b Title Security12bTitle	Common Shares ($.10 par value)
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
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	25300000000	USD
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CY2021	dei	Auditor Firm AuditorFirmId	238
CY2021	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2021	dei	Auditor Location AuditorLocation	New York, New York
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CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	78000000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	8000000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	82000000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4000000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-6000000	USD
CY2021	ed	Increase Decrease In Revenue Decoupling Mechanism Receivables IncreaseDecreaseInRevenueDecouplingMechanismReceivables	53000000	USD
CY2020	ed	Increase Decrease In Revenue Decoupling Mechanism Receivables IncreaseDecreaseInRevenueDecouplingMechanismReceivables	61000000	USD
CY2019	ed	Increase Decrease In Revenue Decoupling Mechanism Receivables IncreaseDecreaseInRevenueDecouplingMechanismReceivables	76000000	USD
CY2021	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	103000000	USD
CY2020	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	134000000	USD
CY2019	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-54000000	USD
CY2021	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-13000000	USD
CY2020	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	6000000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-29000000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	24000000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	11000000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	73000000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	44000000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	170000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	10000000	USD
CY2021	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	266000000	USD
CY2020	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	285000000	USD
CY2019	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	357000000	USD
CY2021	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	472000000	USD
CY2020	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	478000000	USD
CY2019	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	357000000	USD
CY2021	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	-46000000	USD
CY2020	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	74000000	USD
CY2019	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	10000000	USD
CY2021	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	4000000	USD
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-4000000	USD
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	24000000	USD
CY2021	us-gaap	Other Increase Decrease In Environmental Liabilities OtherIncreaseDecreaseInEnvironmentalLiabilities	-10000000	USD
CY2020	us-gaap	Other Increase Decrease In Environmental Liabilities OtherIncreaseDecreaseInEnvironmentalLiabilities	-22000000	USD
CY2019	us-gaap	Other Increase Decrease In Environmental Liabilities OtherIncreaseDecreaseInEnvironmentalLiabilities	-9000000	USD
CY2021	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	18000000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	39000000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	57000000	USD
CY2021	ed	Increase Decreasein System Benefit Charge Liability IncreaseDecreaseinSystemBenefitChargeLiability	-34000000	USD
CY2020	ed	Increase Decreasein System Benefit Charge Liability IncreaseDecreaseinSystemBenefitChargeLiability	-119000000	USD
CY2019	ed	Increase Decreasein System Benefit Charge Liability IncreaseDecreaseinSystemBenefitChargeLiability	20000000	USD
CY2021	us-gaap	Increase Decrease In Deferred Charges IncreaseDecreaseInDeferredCharges	563000000	USD
CY2020	us-gaap	Increase Decrease In Deferred Charges IncreaseDecreaseInDeferredCharges	653000000	USD
CY2019	us-gaap	Increase Decrease In Deferred Charges IncreaseDecreaseInDeferredCharges	492000000	USD
CY2021	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	175000000	USD
CY2020	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	10000000	USD
CY2019	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	278000000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	36000000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	60000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-21000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2733000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2198000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3134000000	USD
CY2021	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	3630000000	USD
CY2020	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	3326000000	USD
CY2019	us-gaap	Payments For Construction In Process PaymentsForConstructionInProcess	3238000000	USD
CY2021	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	323000000	USD
CY2020	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	310000000	USD
CY2019	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	295000000	USD
CY2021	ed	Payments Non Utility Construction Expenditures PaymentsNonUtilityConstructionExpenditures	323000000	USD
CY2020	ed	Payments Non Utility Construction Expenditures PaymentsNonUtilityConstructionExpenditures	583000000	USD
CY2019	ed	Payments Non Utility Construction Expenditures PaymentsNonUtilityConstructionExpenditures	248000000	USD
CY2021	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	629000000	USD
CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	192000000	USD
CY2021	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	183000000	USD
CY2020	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2019	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-10000000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-22000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-22000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3484000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4224000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3782000000	USD
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-382000000	USD
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	178000000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-874000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3017000000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1960000000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	518000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2804000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2925000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1195000000	USD
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	40000000	USD
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	47000000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	32000000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1030000000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	975000000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	924000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	775000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	640000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	825000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	60000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	58000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	54000000	USD
CY2021	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	23000000	USD
CY2020	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	16000000	USD
CY2019	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	12000000	USD
CY2021	us-gaap	Proceeds From Other Equity ProceedsFromOtherEquity	257000000	USD
CY2020	us-gaap	Proceeds From Other Equity ProceedsFromOtherEquity	0	USD
CY2019	us-gaap	Proceeds From Other Equity ProceedsFromOtherEquity	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	461000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2245000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	859000000	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	219000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	211000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1436000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1217000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1006000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1146000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1436000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1217000000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	924000000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	920000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	876000000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	9000000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	38000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-26000000	USD
CY2021	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	457000000	USD
CY2020	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	478000000	USD
CY2019	us-gaap	Construction In Progress Expenditures Incurred But Not Yet Paid ConstructionInProgressExpendituresIncurredButNotYetPaid	336000000	USD
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	49000000	USD
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	48000000	USD
CY2019Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	47000000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	992000000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1272000000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	317000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	148000000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1943000000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1701000000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Other Receivables Current AllowanceForDoubtfulOtherReceivablesCurrent	22000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Other Receivables Current AllowanceForDoubtfulOtherReceivablesCurrent	7000000	USD
CY2021Q4	us-gaap	Other Receivables OtherReceivables	298000000	USD
CY2020Q4	us-gaap	Other Receivables OtherReceivables	278000000	USD
CY2021Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	13000000	USD
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	26000000	USD
CY2021Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	662000000	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	599000000	USD
CY2021Q4	ed	Energy Related Inventory Fuel Oil Gas And Materials And Supplies Cost EnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost	437000000	USD
CY2020Q4	ed	Energy Related Inventory Fuel Oil Gas And Materials And Supplies Cost EnergyRelatedInventoryFuelOilGasAndMaterialsAndSuppliesCost	356000000	USD
CY2021Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	295000000	USD
CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	271000000	USD
CY2021Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	206000000	USD
CY2020Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	266000000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	154000000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	164000000	USD
CY2021Q4	ed	Revenue Decoupling Mechanism Receivable RevenueDecouplingMechanismReceivable	190000000	USD
CY2020Q4	ed	Revenue Decoupling Mechanism Receivable RevenueDecouplingMechanismReceivable	137000000	USD
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	361000000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	231000000	USD
CY2021Q4	us-gaap	Assets Current AssetsCurrent	5551000000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	5301000000	USD
CY2021Q4	us-gaap	Long Term Investments LongTermInvestments	853000000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	1816000000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Common PublicUtilitiesPropertyPlantAndEquipmentCommon	4170000000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Common PublicUtilitiesPropertyPlantAndEquipmentCommon	3880000000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	54239000000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	12177000000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	11188000000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	50738000000	USD
CY2021Q4	ed	Net Utility Plant NetUtilityPlant	42062000000	USD
CY2020Q4	ed	Net Utility Plant NetUtilityPlant	39550000000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	2152000000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	2474000000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	44214000000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	42024000000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	626000000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	522000000	USD
CY2021Q4	ed	Non Utility Property Net NonUtilityPropertyNet	4194000000	USD
CY2020Q4	ed	Non Utility Property Net NonUtilityPropertyNet	3893000000	USD
CY2021Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	188000000	USD
CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	638000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	48596000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	46555000000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	439000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	446000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	297000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	228000000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1293000000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1460000000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	809000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	837000000	USD
CY2021Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3639000000	USD
CY2020Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	6195000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	1654000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	0	USD
CY2021Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	282000000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	285000000	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	8116000000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	9223000000	USD
CY2021Q4	us-gaap	Assets Assets	63116000000	USD
CY2020Q4	us-gaap	Assets Assets	62895000000	USD
CY2021Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	440000000	USD
CY2020Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	1967000000	USD
CY2021Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	0	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	165000000	USD
CY2021Q4	us-gaap	Notes Payable Current NotesPayableCurrent	1488000000	USD
CY2020Q4	us-gaap	Notes Payable Current NotesPayableCurrent	1705000000	USD
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1497000000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1475000000	USD
CY2021Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	300000000	USD
CY2020Q4	us-gaap	Contract With Customer Refund Liability Current ContractWithCustomerRefundLiabilityCurrent	311000000	USD
CY2021Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	104000000	USD
CY2020Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	150000000	USD
CY2021Q4	us-gaap	Interest Payable Current InterestPayableCurrent	151000000	USD
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	149000000	USD
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	113000000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	108000000	USD
CY2021Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	152000000	USD
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	238000000	USD
CY2021Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	185000000	USD
CY2020Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	36000000	USD
CY2021Q4	ed	System Benefits Charge Liability Current SystemBenefitsChargeLiabilityCurrent	423000000	USD
CY2020Q4	ed	System Benefits Charge Liability Current SystemBenefitsChargeLiabilityCurrent	528000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	113000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	96000000	USD
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	461000000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	426000000	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	5427000000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	7354000000	USD
CY2021Q4	ed	Provision For Injuries And Damages ProvisionForInjuriesAndDamages	183000000	USD
CY2020Q4	ed	Provision For Injuries And Damages ProvisionForInjuriesAndDamages	178000000	USD
CY2021Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	737000000	USD
CY2020Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	2257000000	USD
CY2021Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	940000000	USD
CY2020Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	857000000	USD
CY2021Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	577000000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	576000000	USD
CY2021Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	84000000	USD
CY2020Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	240000000	USD
CY2021Q4	ed	Deferred Tax Liabilities And Accumulated Deferred Investment Tax Credit DeferredTaxLiabilitiesAndAccumulatedDeferredInvestmentTaxCredit	6873000000	USD
CY2020Q4	ed	Deferred Tax Liabilities And Accumulated Deferred Investment Tax Credit DeferredTaxLiabilitiesAndAccumulatedDeferredInvestmentTaxCredit	6475000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	717000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	764000000	USD
CY2021Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	4381000000	USD
CY2020Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	4513000000	USD
CY2021Q4	us-gaap	Deferred Credits And Other Liabilities Noncurrent DeferredCreditsAndOtherLiabilitiesNoncurrent	257000000	USD
CY2020Q4	us-gaap	Deferred Credits And Other Liabilities Noncurrent DeferredCreditsAndOtherLiabilitiesNoncurrent	234000000	USD
CY2021Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	14749000000	USD
CY2020Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	16094000000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	22604000000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	20382000000	USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	20037000000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	18847000000	USD
CY2021Q4	us-gaap	Minority Interest MinorityInterest	299000000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	218000000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	20336000000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	19065000000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	63116000000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	62895000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	16839000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1440000000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.96
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	971000000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	825000000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	102000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3000000	USD
CY2019	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-19000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	18213000000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	1144000000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.06
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	1023000000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	640000000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	113000000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6000000	USD
CY2020	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	-16000000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	19065000000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	766000000	USD
CY2021	us-gaap	Profit Loss ProfitLoss	1193000000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	3.10
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	1079000000	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	127000000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	30000000	USD
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	23000000	USD
CY2021	us-gaap	Noncontrolling Interest Increase From Sale Of Parent Equity Interest NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest	257000000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	20336000000	USD
CY2021Q4	ed	Common Stock Equity Shares CommonStockEquityShares	354000000	shares
CY2020Q4	ed	Common Stock Equity Shares CommonStockEquityShares	342000000	shares
CY2021Q4	ed	Common Stock Equity Before Accumulated Comprehensive Income Loss CommonStockEquityBeforeAccumulatedComprehensiveIncomeLoss	20032000000	USD
CY2020Q4	ed	Common Stock Equity Before Accumulated Comprehensive Income Loss CommonStockEquityBeforeAccumulatedComprehensiveIncomeLoss	18872000000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-7000000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	23000000	USD
CY2021Q4	ed	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax And Reclassification Adjustment AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTaxAndReclassificationAdjustment	-2000000	USD
CY2020Q4	ed	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax And Reclassification Adjustment AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTaxAndReclassificationAdjustment	-2000000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	5000000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-25000000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	20037000000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	18847000000	USD
CY2021Q4	us-gaap	Minority Interest MinorityInterest	299000000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	218000000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	20336000000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	19065000000	USD
CY2021Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	293000000	USD
CY2020Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	971000000	USD
CY2021Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	177000000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	168000000	USD
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	49000000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	47000000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	23044000000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	22349000000	USD
CY2021Q4	us-gaap	Other Long Term Debt Current OtherLongTermDebtCurrent	440000000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1967000000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	22604000000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	20382000000	USD
CY2021Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	42641000000	USD
CY2020Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	39229000000	USD
CY2021	ed	Numberof Registrants NumberofRegistrants	2	registrant
CY2021	ed	Numberof Regulated Subsidiaries NumberofRegulatedSubsidiaries	2	subsidiary
CY2021	us-gaap	Excise Taxes Collected ExciseTaxesCollected	358000000	USD
CY2020	us-gaap	Excise Taxes Collected ExciseTaxesCollected	335000000	USD
CY2019	us-gaap	Excise Taxes Collected ExciseTaxesCollected	323000000	USD
CY2021Q4	us-gaap	Plant Held For Future Use Amount PlantHeldForFutureUseAmount	80000000	USD
CY2020Q4	us-gaap	Plant Held For Future Use Amount PlantHeldForFutureUseAmount	92000000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	2152000000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	2474000000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	44214000000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	42024000000	USD
CY2021Q4	ed	Public Utilities Depreciation Allowance Current Rate Plans PublicUtilitiesDepreciationAllowanceCurrentRatePlans	1802000000	USD
CY2021Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	16000000	USD
CY2020Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	12000000	USD
CY2021Q4	ed	Other Deferred Charges And Noncurrent Assets OtherDeferredChargesAndNoncurrentAssets	81000000	USD
CY2020Q4	ed	Other Deferred Charges And Noncurrent Assets OtherDeferredChargesAndNoncurrentAssets	54000000	USD
CY2021	ed	Depreciation Expense Other Deferred Charges And Noncurrent Assets And Prepayments DepreciationExpenseOtherDeferredChargesAndNoncurrentAssetsAndPrepayments	12000000	USD
CY2020	ed	Depreciation Expense Other Deferred Charges And Noncurrent Assets And Prepayments DepreciationExpenseOtherDeferredChargesAndNoncurrentAssetsAndPrepayments	7000000	USD
CY2021Q4	ed	Accumulated Depreciation Other Deferred Charges And Noncurrent Assets And Prepayments AccumulatedDepreciationOtherDeferredChargesAndNoncurrentAssetsAndPrepayments	22000000	USD
CY2020Q4	ed	Accumulated Depreciation Other Deferred Charges And Noncurrent Assets And Prepayments AccumulatedDepreciationOtherDeferredChargesAndNoncurrentAssetsAndPrepayments	10000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1290000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1457000000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	95000000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	102000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	99000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	95000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	95000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	95000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	95000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	95000000	USD
CY2021	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2021Q4	ed	Supplemental Retirement Income Plan Assets SupplementalRetirementIncomePlanAssets	525000000	USD
CY2020Q4	ed	Supplemental Retirement Income Plan Assets SupplementalRetirementIncomePlanAssets	465000000	USD
CY2021Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	102000000	USD
CY2020Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	92000000	USD
CY2021Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	3000000	USD
CY2020Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	3000000	USD
CY2021Q4	us-gaap	Long Term Investments LongTermInvestments	853000000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	1816000000	USD
CY2021	ed	Pension Investment Gains And Losses Recognized Time Period PensionInvestmentGainsAndLossesRecognizedTimePeriod	P15Y
CY2021	ed	Pension Actuarial Gains And Losses Recognized Time Period PensionActuarialGainsAndLossesRecognizedTimePeriod	P10Y
CY2021	ed	Difference Between Fair Value And Expected Market Related Value Of Plan Assets DifferenceBetweenFairValueAndExpectedMarketRelatedValueOfPlanAssets	0.20
CY2021	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	25000000	USD
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	24000000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	24000000	USD
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	349400000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	335700000	shares
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div><span style="color:#424242;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reclassification </span></div><div><span style="color:#424242;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:115%">Certain prior year amounts have been reclassified to conform with current year presentation.</span></div>
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1346000000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	1101000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	1343000000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	348400000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	334800000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	328500000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1000000.0	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	900000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Contingently Issuable Shares IncrementalCommonSharesAttributableToContingentlyIssuableShares	1000000.0	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	329500000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.86
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.29
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.09
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.85
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.28
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.08
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#424242;font-family:'Arial',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Estimates</span></div><div><span style="color:#424242;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</span></div>
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	992000000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1272000000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	154000000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	164000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1146000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1436000000	USD
CY2021	ed	Revenue Sharing Actual Earnings Above Threshold RevenueSharingActualEarningsAboveThreshold	1700000	USD
CY2021Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3639000000	USD
CY2020Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	6195000000	USD
CY2021Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	206000000	USD
CY2020Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	266000000	USD
CY2021Q4	us-gaap	Regulatory Assets RegulatoryAssets	3845000000	USD
CY2020Q4	us-gaap	Regulatory Assets RegulatoryAssets	6461000000	USD
CY2021Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	4381000000	USD
CY2020Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	4513000000	USD
CY2021Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	185000000	USD
CY2020Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	36000000	USD
CY2021Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	4566000000	USD
CY2020Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	4549000000	USD
CY2021	ed	Other Customer Provided Capital Rate OtherCustomerProvidedCapitalRate	0.0180
CY2020	ed	Other Customer Provided Capital Rate OtherCustomerProvidedCapitalRate	0.0265
CY2021	ed	Return On Regulatory Assets ReturnOnRegulatoryAssets	1962000000	USD
CY2020	ed	Return On Regulatory Assets ReturnOnRegulatoryAssets	1639000000	USD
CY2021Q4	ed	Regulatory Assets Not Earning Return RegulatoryAssetsNotEarningReturn	1883000000	USD
CY2020Q4	ed	Regulatory Assets Not Earning Return RegulatoryAssetsNotEarningReturn	4823000000	USD
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	353983712	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	342297534	shares
CY2021Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	23210700	shares
CY2020Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	23210700	shares
CY2021Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	10100000	shares
CY2021Q2	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	775000000	USD
CY2021	ed	Percentage Limitation For Income Available For Dividends PercentageLimitationForIncomeAvailableForDividends	1
CY2021	ed	Rolling Average Calculation Of Income Available For Dividends RollingAverageCalculationOfIncomeAvailableForDividends	P2Y
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	440000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	969000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	393000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	319000000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	385000000	USD
CY2021Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	226000000	USD
CY2020Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	215000000	USD
CY2021	ed	Covenant Principal Balance Amount Limit CovenantPrincipalBalanceAmountLimit	100000000	USD
CY2021	ed	Covenant Principal Balance Amount Limit CovenantPrincipalBalanceAmountLimit	100000000	USD
CY2021Q4	us-gaap	Commercial Paper CommercialPaper	1488000000	USD
CY2021	ed	Weighted Average Interest Rate Of Commercial Paper WeightedAverageInterestRateOfCommercialPaper	0.003
CY2020Q4	us-gaap	Commercial Paper CommercialPaper	1705000000	USD
CY2020	ed	Weighted Average Interest Rate Of Commercial Paper WeightedAverageInterestRateOfCommercialPaper	0.003
CY2021Q4	us-gaap	Loans Payable Current LoansPayableCurrent	0	USD
CY2020Q4	us-gaap	Loans Payable Current LoansPayableCurrent	0	USD
CY2021Q4	us-gaap	Ratio Of Indebtedness To Net Capital1 RatioOfIndebtednessToNetCapital1	0.52
CY2021Q4	ed	Percentage Of Liens Of Companies Consolidated Asset PercentageOfLiensOfCompaniesConsolidatedAsset	0.05
CY2021Q4	ed	Debt Instrument Covenant Compliance Maximum Aggregate Limit Of Failure To Pay Debt Or Derivative Obligations DebtInstrumentCovenantComplianceMaximumAggregateLimitOfFailureToPayDebtOrDerivativeObligations	150000000	USD
CY2021Q4	ed	Debt Instrument Covenant Compliance Maximum Aggregate Limit Of Failure To Pay Debt Or Derivative Obligations DebtInstrumentCovenantComplianceMaximumAggregateLimitOfFailureToPayDebtOrDerivativeObligations	150000000	USD
CY2021Q4	us-gaap	Defined Benefit Pension Plan Current And Noncurrent Liabilities DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities	3090000000	USD
CY2020Q4	us-gaap	Defined Benefit Pension Plan Current And Noncurrent Liabilities DefinedBenefitPensionPlanCurrentAndNoncurrentLiabilities	759000000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	525000000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	465000000	USD
CY2021	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	25000000	USD
CY2020	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	33000000	USD
CY2021Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	2157000000	USD
CY2020Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	2042000000	USD
CY2021Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	2157000000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	126000000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	78000000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Third Year ContractualObligationDueInThirdYear	55000000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Fourth Year ContractualObligationDueInFourthYear	55000000	USD
CY2021Q4	us-gaap	Contractual Obligation Due In Fifth Year ContractualObligationDueInFifthYear	56000000	USD
CY2021Q4	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	434000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	86000000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	85000000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	80000000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	79000000	USD
CY2021Q4	us-gaap	Direct Financing Lease Residual Value Of Leased Asset DirectFinancingLeaseResidualValueOfLeasedAsset	2000000	USD
CY2021Q4	ed	Direct Financing Lease Accumulated Amortization DirectFinancingLeaseAccumulatedAmortization	4000000	USD
CY2020Q4	us-gaap	Direct Financing Lease Residual Value Of Leased Asset DirectFinancingLeaseResidualValueOfLeasedAsset	3000000	USD
CY2020Q4	ed	Direct Financing Lease Accumulated Amortization DirectFinancingLeaseAccumulatedAmortization	3000000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	58000000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	58000000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	58000000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	23000000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P18Y6M
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P19Y1M6D
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P7Y1M6D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P7Y3M18D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.043
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.043
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.018
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.018
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	81000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due In Next Rolling Twelve Months FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	77000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Two FinanceLeaseLiabilityPaymentsDueInRollingYearTwo	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	77000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Three FinanceLeaseLiabilityPaymentsDueInRollingYearThree	1000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	78000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Four FinanceLeaseLiabilityPaymentsDueInRollingYearFour	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	76000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1266000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due In Rolling After Year Five FinanceLeaseLiabilityPaymentsDueInRollingAfterYearFive	1000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Five FinanceLeaseLiabilityPaymentsDueInRollingYearFive	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	877000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	2000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	436000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	0	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	830000000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	2000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	113000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	717000000	USD
CY2021Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	0	USD
CY2021Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	2000000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	830000000	USD
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	2000000	USD
CY2021	ed	Lessee Operating Lease Lease Not Yet Commenced Present Value Of Lease Payments LesseeOperatingLeaseLeaseNotYetCommencedPresentValueOfLeasePayments	6000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Lease Not Yet Commenced Term Of Contract1 LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1	P45Y
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	7000000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	14000000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7000000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-12000000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	79000000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	50000000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	96000000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	43000000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-2000000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	61000000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	42000000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	219000000	USD
CY2021	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-7000000	USD
CY2020	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-7000000	USD
CY2019	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	-7000000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	190000000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	90000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	296000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8298000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7985000000	USD
CY2021Q4	ed	Deferred Tax Liabilities Pension And Other Postretirement Costs DeferredTaxLiabilitiesPensionAndOtherPostretirementCosts	36000000	USD
CY2020Q4	ed	Deferred Tax Liabilities Pension And Other Postretirement Costs DeferredTaxLiabilitiesPensionAndOtherPostretirementCosts	910000000	USD
CY2021Q4	ed	Deferred Tax Liabilities Environmental Redemption Costs DeferredTaxLiabilitiesEnvironmentalRedemptionCosts	264000000	USD
CY2020Q4	ed	Deferred Tax Liabilities Environmental Redemption Costs DeferredTaxLiabilitiesEnvironmentalRedemptionCosts	243000000	USD
CY2021Q4	ed	Deferred Tax Liabilities Storm Costs DeferredTaxLiabilitiesStormCosts	33000000	USD
CY2020Q4	ed	Deferred Tax Liabilities Storm Costs DeferredTaxLiabilitiesStormCosts	31000000	USD
CY2021Q4	ed	Deferred Tax Liabilities Equity Method Investments DeferredTaxLiabilitiesEquityMethodInvestments	640000000	USD
CY2020Q4	ed	Deferred Tax Liabilities Equity Method Investments DeferredTaxLiabilitiesEquityMethodInvestments	536000000	USD
CY2021Q4	ed	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	204000000	USD
CY2020Q4	ed	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	220000000	USD
CY2021Q4	ed	Deferred Tax Liabilities Pension Asset Reserve DeferredTaxLiabilitiesPensionAssetReserve	478000000	USD
CY2020Q4	ed	Deferred Tax Liabilities Pension Asset Reserve DeferredTaxLiabilitiesPensionAssetReserve	0	USD
CY2021Q4	ed	Deferred Tax Liabilities Other Regulatory Assets DeferredTaxLiabilitiesOtherRegulatoryAssets	0	USD
CY2020Q4	ed	Deferred Tax Liabilities Other Regulatory Assets DeferredTaxLiabilitiesOtherRegulatoryAssets	46000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	30000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	0	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9983000000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	9971000000	USD
CY2021Q4	ed	Deferred Tax Assets Pension And Other Postretirement Costs DeferredTaxAssetsPensionAndOtherPostretirementCosts	218000000	USD
CY2020Q4	ed	Deferred Tax Assets Pension And Other Postretirement Costs DeferredTaxAssetsPensionAndOtherPostretirementCosts	504000000	USD
CY2021Q4	ed	Deferred Tax Assets Regulatory Assets And Liabilities Future Income Tax DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesFutureIncomeTax	554000000	USD
CY2020Q4	ed	Deferred Tax Assets Regulatory Assets And Liabilities Future Income Tax DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesFutureIncomeTax	617000000	USD
CY2021Q4	ed	Deferred Tax Assets Regulatory Assets And Liabilities Other DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesOther	727000000	USD
CY2020Q4	ed	Deferred Tax Assets Regulatory Assets And Liabilities Other DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesOther	656000000	USD
CY2021Q4	ed	Deferred Tax Assets Superfund And Environmental Costs DeferredTaxAssetsSuperfundAndEnvironmentalCosts	264000000	USD
CY2020Q4	ed	Deferred Tax Assets Superfund And Environmental Costs DeferredTaxAssetsSuperfundAndEnvironmentalCosts	241000000	USD
CY2021Q4	ed	Deferred Tax Assets Asset Retirement Obligations DeferredTaxAssetsAssetRetirementObligations	177000000	USD
CY2020Q4	ed	Deferred Tax Assets Asset Retirement Obligations DeferredTaxAssetsAssetRetirementObligations	178000000	USD
CY2021Q4	ed	Deferred Tax Liabilities Operating Lease Liabilities DeferredTaxLiabilitiesOperatingLeaseLiabilities	195000000	USD
CY2020Q4	ed	Deferred Tax Liabilities Operating Lease Liabilities DeferredTaxLiabilitiesOperatingLeaseLiabilities	211000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	144000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	164000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	946000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	1022000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	22000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	22000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Equity Method Investments DeferredTaxAssetsEquityMethodInvestments	34000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Equity Method Investments DeferredTaxAssetsEquityMethodInvestments	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	59000000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	3237000000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	3630000000	USD
CY2021Q4	ed	Deferred Tax Liabilities Excluding Investmentin Noncontrolled Affiliates Net DeferredTaxLiabilitiesExcludingInvestmentinNoncontrolledAffiliatesNet	6746000000	USD
CY2020Q4	ed	Deferred Tax Liabilities Excluding Investmentin Noncontrolled Affiliates Net DeferredTaxLiabilitiesExcludingInvestmentinNoncontrolledAffiliatesNet	6341000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	127000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	134000000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6873000000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6475000000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.04
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.04
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.04
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.03
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.01
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	-0.01
CY2021	ed	Effective Income Tax Rate Reconciliation Cost Of Removal Percent EffectiveIncomeTaxRateReconciliationCostOfRemovalPercent	0.02
CY2020	ed	Effective Income Tax Rate Reconciliation Cost Of Removal Percent EffectiveIncomeTaxRateReconciliationCostOfRemovalPercent	0.02
CY2019	ed	Effective Income Tax Rate Reconciliation Cost Of Removal Percent EffectiveIncomeTaxRateReconciliationCostOfRemovalPercent	0.01
CY2021	ed	Effective Income Tax Rate Reconciliation Other Plant Related Items Percent EffectiveIncomeTaxRateReconciliationOtherPlantRelatedItemsPercent	-0.01
CY2020	ed	Effective Income Tax Rate Reconciliation Other Plant Related Items Percent EffectiveIncomeTaxRateReconciliationOtherPlantRelatedItemsPercent	-0.01
CY2019	ed	Effective Income Tax Rate Reconciliation Other Plant Related Items Percent EffectiveIncomeTaxRateReconciliationOtherPlantRelatedItemsPercent	-0.01
CY2021	ed	Effective Income Tax Rate Reconciliation Deductible Expense Amortization Of Excess Deferred Income Taxes Percent EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTaxesPercent	0.12
CY2020	ed	Effective Income Tax Rate Reconciliation Deductible Expense Amortization Of Excess Deferred Income Taxes Percent EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTaxesPercent	0.14
CY2019	ed	Effective Income Tax Rate Reconciliation Deductible Expense Amortization Of Excess Deferred Income Taxes Percent EffectiveIncomeTaxRateReconciliationDeductibleExpenseAmortizationOfExcessDeferredIncomeTaxesPercent	0.04
CY2021	ed	Effective Income Tax Rate Reconciliation Tax Credit Renewable Energy Credits Percent EffectiveIncomeTaxRateReconciliationTaxCreditRenewableEnergyCreditsPercent	0.02
CY2020	ed	Effective Income Tax Rate Reconciliation Tax Credit Renewable Energy Credits Percent EffectiveIncomeTaxRateReconciliationTaxCreditRenewableEnergyCreditsPercent	0.03
CY2019	ed	Effective Income Tax Rate Reconciliation Tax Credit Renewable Energy Credits Percent EffectiveIncomeTaxRateReconciliationTaxCreditRenewableEnergyCreditsPercent	0.02
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.01
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.01
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.14
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.07
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.17
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	13000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	6000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	10000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	2000000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17000000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	13000000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17000000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	12000000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	17000000	USD
CY2021Q4	ed	Unrecognized Tax Benefitsthat Would Impact Effective Tax Rate Netof Taxes UnrecognizedTaxBenefitsthatWouldImpactEffectiveTaxRateNetofTaxes	16000000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13456000000	USD
CY2021	us-gaap	Revenues Revenues	13676000000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	12026000000	USD
CY2020	us-gaap	Revenues Revenues	12246000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	12144000000	USD
CY2019	us-gaap	Revenues Revenues	12574000000	USD
CY2020Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	11000000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	41000000	USD
CY2019Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	29000000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	17000000	USD
CY2018Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	29000000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	20000000	USD
CY2021	ed	Unbilled Contracts Receivable Revenue Recognized UnbilledContractsReceivableRevenueRecognized	242000000	USD
CY2021	ed	Contract With Customer Liability Additions ContractWithCustomerLiabilityAdditions	0	USD
CY2020	ed	Unbilled Contracts Receivable Revenue Recognized UnbilledContractsReceivableRevenueRecognized	88000000	USD
CY2020	ed	Contract With Customer Liability Additions ContractWithCustomerLiabilityAdditions	31000000	USD
CY2019	ed	Unbilled Contracts Receivable Revenue Recognized UnbilledContractsReceivableRevenueRecognized	86000000	USD
CY2019	ed	Contract With Customer Liability Additions ContractWithCustomerLiabilityAdditions	1000000	USD
CY2021	ed	Unbilled Contracts Receivable Decrease From Billings UnbilledContractsReceivableDecreaseFromBillings	218000000	USD
CY2021	ed	Contractwith Customer Liability Decrease From Billings ContractwithCustomerLiabilityDecreaseFromBillings	34000000	USD
CY2020	ed	Unbilled Contracts Receivable Decrease From Billings UnbilledContractsReceivableDecreaseFromBillings	106000000	USD
CY2020	ed	Contractwith Customer Liability Decrease From Billings ContractwithCustomerLiabilityDecreaseFromBillings	7000000	USD
CY2019	ed	Unbilled Contracts Receivable Decrease From Billings UnbilledContractsReceivableDecreaseFromBillings	86000000	USD
CY2019	ed	Contractwith Customer Liability Decrease From Billings ContractwithCustomerLiabilityDecreaseFromBillings	4000000	USD
CY2021Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	35000000	USD
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	7000000	USD
CY2020Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	11000000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	41000000	USD
CY2019Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	29000000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	17000000	USD
CY2021Q4	ed	Contract With Customer Liability Revenue Recognized Previously Outstanding ContractWithCustomerLiabilityRevenueRecognizedPreviouslyOutstanding	34000000	USD
CY2020Q4	ed	Contract With Customer Liability Revenue Recognized Previously Outstanding ContractWithCustomerLiabilityRevenueRecognizedPreviouslyOutstanding	7000000	USD
CY2019Q4	ed	Contract With Customer Liability Revenue Recognized Previously Outstanding ContractWithCustomerLiabilityRevenueRecognizedPreviouslyOutstanding	4000000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	120000000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	81000000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	39000000	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	169000000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	78000000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	35000000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	47000000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	13000000	USD
CY2021	ed	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employer Contribution ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployerContribution	1	USD
CY2021	ed	Share Based Compensation Arrangement By Share Based Payment Award Contribution Amount By Employee For Matching ShareBasedCompensationArrangementByShareBasedPaymentAwardContributionAmountByEmployeeForMatching	9	USD
CY2021	ed	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Contribution Per Year ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeContributionPerYear	25000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.20
CY2021	us-gaap	Revenues Revenues	13676000000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2032000000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	2826000000	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-538000000	USD
CY2021	us-gaap	Interest And Debt Expense InterestAndDebtExpense	905000000	USD
CY2021	ed	Operating Income Tax Expense Benefit OperatingIncomeTaxExpenseBenefit	340000000	USD
CY2021Q4	us-gaap	Assets Assets	63116000000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3964000000	USD
CY2020	us-gaap	Revenues Revenues	12246000000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1920000000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	2654000000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-401000000	USD
CY2020	us-gaap	Interest And Debt Expense InterestAndDebtExpense	1019000000	USD
CY2020	ed	Operating Income Tax Expense Benefit OperatingIncomeTaxExpenseBenefit	193000000	USD
CY2020Q4	us-gaap	Assets Assets	62895000000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4085000000	USD
CY2019	us-gaap	Revenues Revenues	12574000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1684000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	2676000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	51000000	USD
CY2019	us-gaap	Interest And Debt Expense InterestAndDebtExpense	991000000	USD
CY2019	ed	Operating Income Tax Expense Benefit OperatingIncomeTaxExpenseBenefit	300000000	USD
CY2019Q4	us-gaap	Assets Assets	58079000000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3676000000	USD
CY2021	ed	Income Tax Expense Benefit Applicable To Non Operating Income IncomeTaxExpenseBenefitApplicableToNonOperatingIncome	-150000000	USD
CY2020	ed	Income Tax Expense Benefit Applicable To Non Operating Income IncomeTaxExpenseBenefitApplicableToNonOperatingIncome	-103000000	USD
CY2019	ed	Income Tax Expense Benefit Applicable To Non Operating Income IncomeTaxExpenseBenefitApplicableToNonOperatingIncome	-4000000	USD
CY2021Q4	ed	Gross Amountsof Recognized Assets Liabilities GrossAmountsofRecognizedAssetsLiabilities	-8000000	USD
CY2021Q4	ed	Derivative Asset Liability Gross Amount Offset In Balance Sheet DerivativeAssetLiabilityGrossAmountOffsetInBalanceSheet	24000000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-32000000	USD
CY2020Q4	ed	Gross Amountsof Recognized Assets Liabilities GrossAmountsofRecognizedAssetsLiabilities	-366000000	USD
CY2020Q4	ed	Derivative Asset Liability Gross Amount Offset In Balance Sheet DerivativeAssetLiabilityGrossAmountOffsetInBalanceSheet	-3000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-363000000	USD
CY2021Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	1000000	USD
CY2020Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	3000000	USD
CY2021	ed	Deferred Derivative Gains Losses DeferredDerivativeGainsLosses	191000000	USD
CY2020	ed	Deferred Derivative Gains Losses DeferredDerivativeGainsLosses	-26000000	USD
CY2021	ed	Deferred Gain Loss Liability DeferredGainLossLiability	122000000	USD
CY2020	ed	Deferred Gain Loss Liability DeferredGainLossLiability	-301000000	USD
CY2021	ed	Net Deferred Gain Loss NetDeferredGainLoss	313000000	USD
CY2020	ed	Net Deferred Gain Loss NetDeferredGainLoss	-327000000	USD
CY2021	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	78000000	USD
CY2020	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-63000000	USD
CY2021Q4	us-gaap	Credit Derivative Maximum Exposure Undiscounted CreditDerivativeMaximumExposureUndiscounted	406000000	USD
CY2021	ed	Credit Exposure Independent System Operators CreditExposureIndependentSystemOperators	91000000	USD
CY2021Q4	ed	Maximum Potential Future Exposure On Credit Risk Derivatives With Investment Grade Counterparties MaximumPotentialFutureExposureOnCreditRiskDerivativesWithInvestmentGradeCounterparties	127000000	USD
CY2021	ed	Credit Exposure Nonrated Counter Parties CreditExposureNonratedCounterParties	53000000	USD
CY2021Q4	ed	Maximum Potential Future Exposure On Credit Risk Derivatives With Commodity Exchange Brokers MaximumPotentialFutureExposureOnCreditRiskDerivativesWithCommodityExchangeBrokers	135000000	USD
CY2021Q4	us-gaap	Credit Risk Derivatives At Fair Value Net CreditRiskDerivativesAtFairValueNet	158000000	USD
CY2021Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	170000000	USD
CY2020Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-19000000	USD
CY2019Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-16000000	USD
CY2021	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	-9000000	USD
CY2020	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	-10000000	USD
CY2021	ed	Fair Value Net Derivative Asset Liability Measuredon Recurring Basis Unobservable Inputs Reconciliation Gain Loss Includedin Regulatory Assetsand Liabilities FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainLossIncludedinRegulatoryAssetsandLiabilities	3000000	USD
CY2020	ed	Fair Value Net Derivative Asset Liability Measuredon Recurring Basis Unobservable Inputs Reconciliation Gain Loss Includedin Regulatory Assetsand Liabilities FairValueNetDerivativeAssetLiabilityMeasuredonRecurringBasisUnobservableInputsReconciliationGainLossIncludedinRegulatoryAssetsandLiabilities	-7000000	USD
CY2021	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases	6000000	USD
CY2020	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchases	0	USD
CY2021	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements	-5000000	USD
CY2020	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements	-15000000	USD
CY2021	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3	3000000	USD
CY2020	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3 FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3	-1000000	USD
CY2021Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-11000000	USD
CY2020Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-19000000	USD
CY2021Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	577000000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	576000000	USD
CY2021	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	58000000	USD
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	18000000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	75000000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	191000000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	16000000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	56000000	USD
CY2021	us-gaap	Asset Retirement Obligation Period Increase Decrease AssetRetirementObligationPeriodIncreaseDecrease	-87000000	USD
CY2020	us-gaap	Asset Retirement Obligation Period Increase Decrease AssetRetirementObligationPeriodIncreaseDecrease	-49000000	USD

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$ED
CONSOLIDATED EDISON INC Stock $ed

2021 Q4 Form 10-K Financial Statement

#000104786222000039 Filed on February 17, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ED CONSOLIDATED EDISON INC Stock $ed

2021 Q4 Form 10-K Financial Statement

#000104786222000039 Filed on February 17, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ED
CONSOLIDATED EDISON INC Stock $ed