<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31"
  xmlns:ed="http://www.coned.com/20210121"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="ed-20210121.xsd" xlink:type="simple"/>
    <context id="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001047862</identifier>
        </entity>
        <period>
            <startDate>2020-11-19</startDate>
            <endDate>2020-11-19</endDate>
        </period>
    </context>
    <context id="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001047862</identifier>
            <segment>
                <xbrldi:explicitMember dimension="dei:LegalEntityAxis">ed:ConsolidatedEdisonCompanyofNewYorkInc.Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-11-19</startDate>
            <endDate>2020-11-19</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF80L2ZyYWc6ZGQyZDI3ZGQ5YThkNDdiMDg0OWRmN2FmYjAwOTk3YWYvdGFibGU6ZWQwYjRkYTFjZjI3NDRiMDg4OTE3NDRkNzI1MjU5NjIvdGFibGVyYW5nZTplZDBiNGRhMWNmMjc0NGIwODg5MTc0NGQ3MjUyNTk2Ml8yLTEtMS0xLTA_a8da27af-8a55-4ed9-a100-5b098ea24499">0001047862</dei:EntityCentralIndexKey>
    <dei:EntityCentralIndexKey
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF80L2ZyYWc6ZGQyZDI3ZGQ5YThkNDdiMDg0OWRmN2FmYjAwOTk3YWYvdGFibGU6ZWQwYjRkYTFjZjI3NDRiMDg4OTE3NDRkNzI1MjU5NjIvdGFibGVyYW5nZTplZDBiNGRhMWNmMjc0NGIwODg5MTc0NGQ3MjUyNTk2Ml8zLTEtMS0xLTA_fc94bfa5-316b-47b6-869b-0b26ed03e29c">0000023632</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF80L2ZyYWc6ZGQyZDI3ZGQ5YThkNDdiMDg0OWRmN2FmYjAwOTk3YWYvdGFibGU6ZWQwYjRkYTFjZjI3NDRiMDg4OTE3NDRkNzI1MjU5NjIvdGFibGVyYW5nZTplZDBiNGRhMWNmMjc0NGIwODg5MTc0NGQ3MjUyNTk2Ml82LTEtMS0xLTA_3e3cb7da-4678-4dbc-a04c-4b39ef5a1b3f">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGV4dHJlZ2lvbjpkMTFhMWY4NWRkMGM0YTQ1OTM0M2ViYmM1ZGMzNTRlMV8xMzc2_950b0012-95ad-44fd-b1c9-517deb27c9d6">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGV4dHJlZ2lvbjpkMTFhMWY4NWRkMGM0YTQ1OTM0M2ViYmM1ZGMzNTRlMV8xMzc3_a7e846d9-bc3e-4ed5-b137-fedc56a115cc">2021-01-21</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGV4dHJlZ2lvbjpkMTFhMWY4NWRkMGM0YTQ1OTM0M2ViYmM1ZGMzNTRlMV8xMzc4_c4cf62a5-52d3-48f8-a3d1-76757b08c7b1">Consolidated Edison, Inc</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6YTk0ZjQ5NzJiN2NhNGI4ZmEyNjNjZDFiNmVjY2YzMTIvdGFibGVyYW5nZTphOTRmNDk3MmI3Y2E0YjhmYTI2M2NkMWI2ZWNjZjMxMl8wLTAtMS0xLTA_53435ea5-f823-43b7-969f-83cb7ec8ba5c">NY</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6YTk0ZjQ5NzJiN2NhNGI4ZmEyNjNjZDFiNmVjY2YzMTIvdGFibGVyYW5nZTphOTRmNDk3MmI3Y2E0YjhmYTI2M2NkMWI2ZWNjZjMxMl8wLTItMS0xLTA_0ecf0e19-f1bf-4235-be30-2bb01f0c8b44">1-14514</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6YTk0ZjQ5NzJiN2NhNGI4ZmEyNjNjZDFiNmVjY2YzMTIvdGFibGVyYW5nZTphOTRmNDk3MmI3Y2E0YjhmYTI2M2NkMWI2ZWNjZjMxMl8wLTQtMS0xLTA_fed125ed-009d-4aaa-a826-aab1e5ce1189">13-3965100</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6ZmVjNmQ0NDZjMzkxNDMzNGFlODBkZjBjY2I4ZGJmNjgvdGFibGVyYW5nZTpmZWM2ZDQ0NmMzOTE0MzM0YWU4MGRmMGNjYjhkYmY2OF8wLTAtMS0xLTA_c377e399-b7a1-4808-8630-ba63cfeaaefc">4 Irving Place,</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6ZmVjNmQ0NDZjMzkxNDMzNGFlODBkZjBjY2I4ZGJmNjgvdGFibGVyYW5nZTpmZWM2ZDQ0NmMzOTE0MzM0YWU4MGRmMGNjYjhkYmY2OF8wLTEtMS0xLTA_9583d8e8-8438-46ec-a66d-c5225f6ed0ec">New York,</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6ZmVjNmQ0NDZjMzkxNDMzNGFlODBkZjBjY2I4ZGJmNjgvdGFibGVyYW5nZTpmZWM2ZDQ0NmMzOTE0MzM0YWU4MGRmMGNjYjhkYmY2OF8wLTItMS0xLTA_c460b5d8-db2a-440b-b1b6-9d3ad6e78ea0">NY</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6ZmVjNmQ0NDZjMzkxNDMzNGFlODBkZjBjY2I4ZGJmNjgvdGFibGVyYW5nZTpmZWM2ZDQ0NmMzOTE0MzM0YWU4MGRmMGNjYjhkYmY2OF8wLTQtMS0xLTA_ccc34a79-24f4-4f9a-9366-84b80f1ef442">10003</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGV4dHJlZ2lvbjpkMTFhMWY4NWRkMGM0YTQ1OTM0M2ViYmM1ZGMzNTRlMV8xMzcy_b586ad20-8b5e-497c-9669-2013d726d469">212</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGV4dHJlZ2lvbjpkMTFhMWY4NWRkMGM0YTQ1OTM0M2ViYmM1ZGMzNTRlMV8xMzcz_153d3793-8635-4aa4-8b12-de6ecb42ce34">460-4600</dei:LocalPhoneNumber>
    <dei:EntityRegistrantName
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGV4dHJlZ2lvbjpkMTFhMWY4NWRkMGM0YTQ1OTM0M2ViYmM1ZGMzNTRlMV8xMzc0_2bf378d5-e244-459b-95b1-55386ca8d5b1">Consolidated Edison Company of New York, Inc.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6N2RmNTE4NGY3MzA2NGIzZWFiNWY5M2FkYzllZjdkYTEvdGFibGVyYW5nZTo3ZGY1MTg0ZjczMDY0YjNlYWI1ZjkzYWRjOWVmN2RhMV8wLTAtMS0xLTA_b5ca22e2-d376-47c7-9558-4529b0a64e0e">NY</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6N2RmNTE4NGY3MzA2NGIzZWFiNWY5M2FkYzllZjdkYTEvdGFibGVyYW5nZTo3ZGY1MTg0ZjczMDY0YjNlYWI1ZjkzYWRjOWVmN2RhMV8wLTItMS0xLTA_34d1b2d6-14de-4ca0-bcd0-d44f3c59de7f">1-1217</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6N2RmNTE4NGY3MzA2NGIzZWFiNWY5M2FkYzllZjdkYTEvdGFibGVyYW5nZTo3ZGY1MTg0ZjczMDY0YjNlYWI1ZjkzYWRjOWVmN2RhMV8wLTQtMS0xLTA_75fb3d9c-92e3-44f9-b83b-97d433c2f74c">13-5009340</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6MzRkNTg4OTcyNzllNDUwY2I2M2I0OGJiOThhOGYwNjIvdGFibGVyYW5nZTozNGQ1ODg5NzI3OWU0NTBjYjYzYjQ4YmI5OGE4ZjA2Ml8wLTAtMS0xLTA_97f39d34-58a4-4ee4-9464-578c8925dd62">4 Irving Place,</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6MzRkNTg4OTcyNzllNDUwY2I2M2I0OGJiOThhOGYwNjIvdGFibGVyYW5nZTozNGQ1ODg5NzI3OWU0NTBjYjYzYjQ4YmI5OGE4ZjA2Ml8wLTEtMS0xLTA_8f3db54c-3d08-430d-bda9-baf4373f756c">New York,</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6MzRkNTg4OTcyNzllNDUwY2I2M2I0OGJiOThhOGYwNjIvdGFibGVyYW5nZTozNGQ1ODg5NzI3OWU0NTBjYjYzYjQ4YmI5OGE4ZjA2Ml8wLTItMS0xLTA_a7c66c61-daf9-4d09-8890-bba8faf4a891">NY</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6MzRkNTg4OTcyNzllNDUwY2I2M2I0OGJiOThhOGYwNjIvdGFibGVyYW5nZTozNGQ1ODg5NzI3OWU0NTBjYjYzYjQ4YmI5OGE4ZjA2Ml8wLTQtMS0xLTA_e6a8c1aa-c4d1-448b-ae6d-a87b6a1fc6ed">10003</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="ic294ff40817441fd90b3f8a625bd75e4_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGV4dHJlZ2lvbjpkMTFhMWY4NWRkMGM0YTQ1OTM0M2ViYmM1ZGMzNTRlMV8xMzc1_0aa2160e-2542-4be9-a05d-f16dcecfd5d7">212</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGV4dHJlZ2lvbjpkMTFhMWY4NWRkMGM0YTQ1OTM0M2ViYmM1ZGMzNTRlMV8xMzc5_e844d9b3-f893-442f-856c-7d3ab9ba0163">460-4600</dei:LocalPhoneNumber>
    <dei:TradingSymbol
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6NjZkZDc4MDA1OWUzNDIwYmExYTkwNzU1ZDg5MmYyM2MvdGFibGVyYW5nZTo2NmRkNzgwMDU5ZTM0MjBiYTFhOTA3NTVkODkyZjIzY18xLTItMS0xLTA_8456e717-b4df-42da-96aa-eb4f9837f9a0">ED</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6NjZkZDc4MDA1OWUzNDIwYmExYTkwNzU1ZDg5MmYyM2MvdGFibGVyYW5nZTo2NmRkNzgwMDU5ZTM0MjBiYTFhOTA3NTVkODkyZjIzY18xLTQtMS0xLTA_6521c203-a913-41fc-ba72-ed97b94e709c">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6NjZkZDc4MDA1OWUzNDIwYmExYTkwNzU1ZDg5MmYyM2MvdGFibGVyYW5nZTo2NmRkNzgwMDU5ZTM0MjBiYTFhOTA3NTVkODkyZjIzY18yLTAtMS0xLTA_5c4c07c2-1572-4440-86d5-07190e93e071">Common Shares ($.10 par value)</dei:Security12bTitle>
    <dei:WrittenCommunications
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6ZDY2MjM5NGVmMTE2NDZjNmFiZjVkM2FmZWFmOTBmYmIvdGFibGVyYW5nZTpkNjYyMzk0ZWYxMTY0NmM2YWJmNWQzYWZlYWY5MGZiYl8wLTAtMS0xLTA_ee2d43c4-2845-4db9-80a4-e351269b7898">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6NDhiNTFmMjQwZGIxNDJiZWI4OTRmNTE1YWMzYjg5YWEvdGFibGVyYW5nZTo0OGI1MWYyNDBkYjE0MmJlYjg5NGY1MTVhYzNiODlhYV8wLTAtMS0xLTA_b52b3dce-5387-497a-a992-b4b091607216">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6MDJlNTU3NzcxZDAxNGE3MWE2NTY5YTlmMzA1N2Q0NjYvdGFibGVyYW5nZTowMmU1NTc3NzFkMDE0YTcxYTY1NjlhOWYzMDU3ZDQ2Nl8wLTAtMS0xLTA_32e04db9-3e63-4ad7-9ced-de153f5c1426">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGFibGU6YzFmYTIzOTM0OTgzNDA5NTk1NmNiMDk3ZTAxYjFhMTEvdGFibGVyYW5nZTpjMWZhMjM5MzQ5ODM0MDk1OTU2Y2IwOTdlMDFiMWExMV8wLTAtMS0xLTA_dc067e1f-d81e-4b21-adc5-ce984bb93852">false</dei:PreCommencementIssuerTenderOffer>
    <dei:EntityEmergingGrowthCompany
      contextRef="i3abfd8bcf43d47c8ba454a0dbf5f9733_D20201119-20201119"
      id="id3VybDovL2RvY3MudjEvZG9jOmQzOTFiNGJkOTgzZTQ1YWNhYTM3ZDEwYjVlODY2OTQwL3NlYzpkMzkxYjRiZDk4M2U0NWFjYWEzN2QxMGI1ZTg2Njk0MF8xL2ZyYWc6ZDExYTFmODVkZDBjNGE0NTkzNDNlYmJjNWRjMzU0ZTEvdGV4dHJlZ2lvbjpkMTFhMWY4NWRkMGM0YTQ1OTM0M2ViYmM1ZGMzNTRlMV8xMzcx_07f22aad-8d7b-4085-8b1d-1da9066ecacd">false</dei:EntityEmergingGrowthCompany>
</xbrl>
