XML 124 R96.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Regulatory Matters - Regulatory Assets (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | $ 5,523 | $ 4,607
Regulatory assets – current | 141 | 281
Total Regulatory Assets | 5,664 | 4,888
Environmental remediation costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 1,038 | 1,105
System peak reduction and energy efficiency programs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 1,656 | 1,251
COVID-19 pandemic deferrals |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 1,073 | 789
Revenue taxes |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 540 | 476
Deferred storm costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 147 | 206
Property tax reconciliation |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 131 | 169
Deferred derivative losses - long term |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 106 | 163
MTA power reliability deferral |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 31 | 61
Pension and other postretirement benefits deferrals |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 2 | 48
Gas service line deferred costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 18 | 43
Legacy meters (c) |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 413 | 17
Other |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 368 | 279
Deferred derivative losses - short term |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – current | 102 | 269
Recoverable energy costs |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – current | 39 | 12
CECONY |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 5,158 | 4,314
Regulatory assets – current | 106 | 254
CECONY | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 5,158 | 4,314
Regulatory assets – current | 106 | 254
Total Regulatory Assets | 5,264 | 4,568
CECONY | Environmental remediation costs | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 952 | 1,022
CECONY | System peak reduction and energy efficiency programs | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 1,598 | 1,223
CECONY | COVID-19 pandemic deferrals | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 1,058 | 782
CECONY | Revenue taxes | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 517 | 455
CECONY | Deferred storm costs | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 53 | 115
CECONY | Property tax reconciliation | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 131 | 169
CECONY | Deferred derivative losses - long term | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 94 | 148
CECONY | MTA power reliability deferral | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 31 | 61
CECONY | Pension and other postretirement benefits deferrals | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 2 | 39
CECONY | Gas service line deferred costs | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 18 | 43
CECONY | Legacy meters (c) | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 398 | 0
CECONY | Other | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – noncurrent | 306 | 257
CECONY | Deferred derivative losses - short term | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – current | 92 | 253
CECONY | Recoverable energy costs | Subsidiaries |  |
Regulatory Assets [Line Items] |  |
Regulatory assets – current | $ 14 | $ 1

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_RegulatoryAssetLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount for the individual regulatory asset as itemized in a table of regulatory assets 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_RegulatoryAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + 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_RegulatoryAssetsCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. + 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_RegulatoryAssetsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=us-gaap_EnvironmentalRestorationCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_SystemPeakReductionAndEnergyEfficiencyProgramsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_COVID19PandemicDeferralsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_RevenueTaxesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_DeferredStormCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_PropertyTaxReconciliationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_DerivativeLossesLongTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_MTAPowerReliabilityDeferralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_PensionAndOtherPostRetirementBenefitsDeferralsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_GasServiceLineDeferredCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_LegacyMetersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_OtherRegulatoryAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_DerivativeLossesCurrentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=ed_RecoverableEnergyCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ed_ConsolidatedEdisonCompanyofNewYorkInc.Member
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: |