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Leases - Other Related Information (Details) | Mar. 31, 2020 | Dec. 31, 2019
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Lessee, Lease, Description [Line Items] |  |
Weighted Average Remaining Lease Term, Operating leases | 19 years 6 months | 19 years 9 months 18 days
Weighted Average Remaining Lease Term, Finance leases | 13 years 1 month 6 days | 12 years 2 months 12 days
Weighted Average Discount Rate, Operating leases | 4.30% | 4.30%
Weighted Average Discount Rate, Finance leases | 3.20% | 3.50%
CECONY |  |
Lessee, Lease, Description [Line Items] |  |
Weighted Average Remaining Lease Term, Operating leases | 13 years 9 months 18 days | 14 years
Weighted Average Remaining Lease Term, Finance leases | 2 years 6 months | 2 years 4 months 24 days
Weighted Average Discount Rate, Operating leases | 3.60% | 3.60%
Weighted Average Discount Rate, Finance leases | 3.50% | 4.10%

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