XML 42 R49.htm IDEA: XBRL DOCUMENT
v3.20.1

Regulatory Matters - COVID-19 Regulatory Matters (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 USD ($)
CECONY |
Public Utilities, General Disclosures [Line Items] |
Revenues from late payment, disconnection, collection notice and other fees per month | $ 6.0
Earned EAM incentives | 46.0
O&R |
Public Utilities, General Disclosures [Line Items] |
Revenues from late payment, disconnection, collection notice and other fees per month | 0.4
Earned EAM incentives | $ 3.0

X
- Definition Earnings Adjustment Mechanism, Incentive Revenue + References No definition available. + Details
Name: | ed_EarningsAdjustmentMechanismIncentiveRevenue
Namespace Prefix: | ed_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Revenues From Late Payment, Collection And Other Fees Per Month + References No definition available. + Details
Name: | ed_RevenuesFromLatePaymentCollectionAndOtherFeesPerMonth
Namespace Prefix: | ed_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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