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Leases - Additional Information (Details) - CECONY - Subsidiaries | Jun. 30, 2024 lease_agreement
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Lessee, Lease, Description [Line Items] |
Number of operating lease agreements | 2
Lease Expected To Commence In 3 Years With 15 Year Lease Term |
Lessee, Lease, Description [Line Items] |
Operating lease, lease not yet commenced, expected period to commence (in years) | 3 years
Operating lease, not yet commenced, term of contract (in years) | 15 years
Lease Expected To Commence In 2 Years With 15 Year Lease Term |
Lessee, Lease, Description [Line Items] |
Operating lease, lease not yet commenced, expected period to commence (in years) | 2 years
Operating lease, not yet commenced, term of contract (in years) | 15 years

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- Definition Lessee, Operating Lease, Number of Contracts + References No definition available. + Details
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- 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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