Contract With Customer, Cost Of Program, Recovery Period

No definition available.

Name:	ed_ContractWithCustomerCostOfProgramRecoveryPeriod
Namespace Prefix:	ed_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Contract With Customer, Receivable, Expected Amount

+ References

No definition available.

+ Details

Name:	ed_ContractWithCustomerReceivableExpectedAmount
Namespace Prefix:	ed_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Revenue From Contracts With Customer, Late Payment Charges And Fees

+ References

No definition available.

+ Details

Name:	ed_RevenueFromContractsWithCustomerLatePaymentChargesAndFees
Namespace Prefix:	ed_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Revenue From Contracts With Customer, Late Payment Charges And Fees, Reserve

+ References

No definition available.

+ Details

Name:	ed_RevenueFromContractsWithCustomerLatePaymentChargesAndFeesReserve
Namespace Prefix:	ed_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 9
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_AccountsReceivableGrossCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

+ Details

Name:	us-gaap_AccountsReceivableNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

+ References

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The carrying amount of deferred costs.

+ References

No definition available.

+ Details

Name:	us-gaap_DeferredCostsCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of government assistance recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 832
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=128342832&loc=SL128342943-244231

+ Details

Name:	us-gaap_GovernmentAssistanceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Duration of government assistance transaction, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 832
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=128342832&loc=SL128342950-244231

+ Details

Name:	us-gaap_GovernmentAssistanceTransactionDuration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319

+ Details

Name:	us-gaap_IncomeTaxReconciliationTaxCredits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(5))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

+ Details

Name:	us-gaap_ProvisionForDoubtfulAccounts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_PublicUtilitiesGeneralDisclosuresLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ed_ConsolidatedEdisonCompanyofNewYorkInc.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GovernmentAssistanceTypeAxis=ed_COVID19ArrearsAssistanceProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ed_OrangeAndRocklandUtilitiesIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=ed_COVID19Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ed_ConsolidatedEdisonCompanyOfNewYorkIncAndOrangeAndRocklandUtilitiesIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilityAxis=ed_ElectricAndGasTransmissionProjectsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilityAxis=us-gaap_GasTransmissionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PublicUtilityAxis=us-gaap_ElectricTransmissionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ed_ProgramAxis=ed_SummerCoolingCreditProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MajorCustomersAxis=ed_ResidentialCustomersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Regulatory Matters - COVID-19 Regulatory Matters (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended		12 Months Ended			13 Months Ended	25 Months Ended	31 Months Ended	33 Months Ended
	Jun. 30, 2022	Jan. 31, 2021	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2023	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022	Mar. 31, 2022	Sep. 30, 2022	Sep. 30, 2022	Nov. 30, 2021	Jan. 01, 2021
Public Utilities, General Disclosures [Line Items]
Reserve adjustments				$ (12.0)	$ 165.0
Accounts receivable - customers, allowance for uncollectible accounts			$ 305.0	305.0			$ 317.0				$ 305.0	$ 305.0
Accounts receivable			2,095.0	2,095.0			1,943.0				2,095.0	2,095.0
Subsidiaries
Public Utilities, General Disclosures [Line Items]
Reserve adjustments				(7.0)	$ 162.0
Accounts receivable - customers, allowance for uncollectible accounts			297.0	297.0			304.0				297.0	297.0
Accounts receivable			1,982.0	1,982.0			1,841.0				1,982.0	1,982.0
CECONY \| Subsidiaries \| COVID-19 Arrears Assistance Program
Public Utilities, General Disclosures [Line Items]
Credits issued from government assistance	$ 164.5		265.8	315.1
Eligible credit recovery period	4 years
O&R \| Subsidiaries \| COVID-19 Arrears Assistance Program
Public Utilities, General Disclosures [Line Items]
Credits issued from government assistance	$ 1.6		4.7	5.5
Eligible credit recovery period	1 year
COVID-19
Public Utilities, General Disclosures [Line Items]
Deferred costs			0.4	0.4							0.4	0.4
COVID-19 \| Consolidated Edison Company of New York, Inc. And Orange And Rockland \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Reserve for customer arrearages							7.0
COVID-19 \| Consolidated Edison Company of New York, Inc. And Orange And Rockland \| Electric and Gas Transmission Projects \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Write off										$ 11.0
COVID-19 \| CECONY \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Reserve for customer arrearages													$ 7.0
COVID-19 \| CECONY \| Electric and Gas Transmission Projects \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Reserve adjustments												232.0
Write off											19.0
Account receivable, before allowance for credit loss			148.4	148.4							148.4	148.4
Accounts receivable - customers, allowance for uncollectible accounts			89.6	89.6							89.6	89.6
Tax credit			20.9	70.1
Accounts receivable			2,279.0	2,279.0							2,279.0	2,279.0
COVID-19 \| CECONY \| Gas \| Subsidiaries \| Scenario, Forecast
Public Utilities, General Disclosures [Line Items]
Late payment charges and fees						$ 4.0			$ 7.0
COVID-19 \| CECONY \| Electric \| Subsidiaries \| Scenario, Forecast
Public Utilities, General Disclosures [Line Items]
Late payment charges and fees						$ 19.0			$ 43.0
COVID-19 \| O&R \| Electric and Gas Transmission Projects \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Account receivable, before allowance for credit loss			1.6	1.6							1.6	1.6
Accounts receivable - customers, allowance for uncollectible accounts			2.7	2.7							2.7	2.7
Tax credit			0.4	1.2
Accounts receivable			$ 109.0	$ 109.0							109.0	109.0
COVID-19 \| O&R \| Gas \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Late payment charges and fees							$ 2.4
Reserve adjustments												$ 3.0
Write off											$ 1.0
COVID-19 \| O&R \| Electric \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Late payment charges and fees								$ 1.7
Summer Cooling Credit Program \| Residential Customers \| COVID-19 \| CECONY \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Expected deferred revenue														$ 63.4
Cost of the program, recovery period		5 years