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 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

Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer, when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953401-111524

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130533-203044

+ Details

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

- 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 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 http://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 http://asc.fasb.org/extlink&oid=123367319&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:	dei_LegalEntityAxis=ed_ConsolidatedEdisonCompanyofNewYorkInc.Member
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:	srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
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:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
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:	dei_LegalEntityAxis=ed_OrangeAndRocklandUtilitiesIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

Regulatory Matters - COVID-19 Regulatory Matters (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended			13 Months Ended		22 Months Ended
	Jan. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021
Public Utilities, General Disclosures [Line Items]
Reserve adjustments		$ 169,000	$ 78,000	$ 8,000
CECONY
Public Utilities, General Disclosures [Line Items]
Reserve adjustments		166,000	$ 74,000	$ 7,000
COVID-19
Public Utilities, General Disclosures [Line Items]
Deferred costs		900					$ 900
COVID-19 \| CECONY
Public Utilities, General Disclosures [Line Items]
Reserve adjustments		239,000
Allowance for credit loss, write-off							8,000
COVID-19 \| CECONY \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Reserve for customer arrearages		7,000					7,000
COVID-19 \| CECONY \| Electric \| Subsidiaries \| Scenario, Forecast
Public Utilities, General Disclosures [Line Items]
Late payment charges and fees					$ 19,000	$ 43,000
COVID-19 \| CECONY \| Gas \| Subsidiaries \| Scenario, Forecast
Public Utilities, General Disclosures [Line Items]
Late payment charges and fees					$ 4,000	$ 7,000
COVID-19 \| O&R
Public Utilities, General Disclosures [Line Items]
Reserve adjustments		7,000
Allowance for credit loss, write-off							3,000
Residential Customers \| COVID-19 \| CECONY \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Deferred revenue		$ 54,900					$ 54,900
Summer Cooling Credit Program \| Residential Customers \| COVID-19 \| CECONY \| Subsidiaries
Public Utilities, General Disclosures [Line Items]
Expected deferred revenue								$ 63,400
Cost of the program, recovery period	5 years