XML 73 R58.htm IDEA: XBRL DOCUMENT
v3.25.3

Regulatory Matters - Other Regulatory Matters Narrative (Details) - USD ($) $ in Millions |  | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Nov. 06, 2025 | Sep. 30, 2025 | Dec. 31, 2024 | May 31, 2024 | Dec. 31, 2023
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Other customer-provided capital rate (in percent) |  | 4.75% | 5.95% |  |
Return on regulatory assets |  | $ 3,220.0 | $ 3,262.0 |  |
Deferred derivative losses recovery period, current (in years) |  | 1 year |  |  |
Recovery period for deferred derivative losses (in years) |  | 3 years |  |  |
CECONY |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Billing system costs |  | $ 510.0 |  |  |
Estimated capitalization costs |  | 89.0 |  |  |
Incremental costs |  |  |  | $ 51.0 |
Net regulatory assets |  | 1,042.0 | 1,078.0 |  |
Return on regulatory assets |  | $ 3,008.0 | 3,024.0 |  |
CECONY | Subsequent Event |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Annual gas revenue requirement amount | $ 33.3 |  |  |  |
Rate adjustment mechanism | $ 100.0 |  |  |  |
CECONY | Commodity |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Recovery period (in years) |  | 4 years |  |  |
O&R |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Net regulatory assets |  | $ 10.0 | 14.0 |  |
RECO | Subsidiaries |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Return on regulatory assets |  | 33.0 | $ 28.0 |  |
Maximum | CECONY |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Capital expenditures limit |  | $ 421.0 |  | $ 421.0 | $ 38.0

X
- Definition Other Customer Provided Capital Rate + References No definition available. + Details
Name: | ed_OtherCustomerProvidedCapitalRate
Namespace Prefix: | ed_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Public Utilities, Annual Gas Revenue Requirement Amount + References No definition available. + Details
Name: | ed_PublicUtilitiesAnnualGasRevenueRequirementAmount
Namespace Prefix: | ed_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Public Utilities, Billing System Costs + References No definition available. + Details
Name: | ed_PublicUtilitiesBillingSystemCosts
Namespace Prefix: | ed_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Public Utilities, Incremental Costs + References No definition available. + Details
Name: | ed_PublicUtilitiesIncrementalCosts
Namespace Prefix: | ed_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Public Utilities. Limit For Capitalization + References No definition available. + Details
Name: | ed_PublicUtilitiesLimitForCapitalization
Namespace Prefix: | ed_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Public Utilities, Rate Adjustment Mechanism + References No definition available. + Details
Name: | ed_PublicUtilitiesRateAdjustmentMechanism
Namespace Prefix: | ed_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Public Utilities, Requested Capitalization Of Billing System Costs + References No definition available. + Details
Name: | ed_PublicUtilitiesRequestedCapitalizationOfBillingSystemCosts
Namespace Prefix: | ed_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Regulatory Assets, Deferred Derivative Losses, Current, Recovery Period + References No definition available. + Details
Name: | ed_RegulatoryAssetsDeferredDerivativeLossesCurrentRecoveryPeriod
Namespace Prefix: | ed_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Regulatory Assets, Deferred Derivative Losses, Noncurrent, Recovery Period + References No definition available. + Details
Name: | ed_RegulatoryAssetsDeferredDerivativeLossesNoncurrentRecoveryPeriod
Namespace Prefix: | ed_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Regulatory Assets, Recovery Period + References No definition available. + Details
Name: | ed_RegulatoryAssetsRecoveryPeriod
Namespace Prefix: | ed_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Return On Regulatory Assets + References No definition available. + Details
Name: | ed_ReturnOnRegulatoryAssets
Namespace Prefix: | ed_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net amount of all regulatory assets less all regulatory liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478742/980-340-50-1 + Details
Name: | us-gaap_NetRegulatoryAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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

X
- Details
Name: | dei_LegalEntityAxis=ed_ConsolidatedEdisonCompanyofNewYorkInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=ed_FairValueCommodityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ed_OrangeAndRocklandUtilitiesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ed_RocklandElectricCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |