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Leases (Tables)
 3 Months Ended
Mar. 31, 2025
Leases [Abstract]  
Schedule of Lease Costs, Cash Flows and Other Related Information
Operating lease cost and cash paid for amounts included in the measurement of lease liabilities for the three months ended March 31, 2025 and 2024 were as follows:
For the Three Months Ended March 31,
Con EdisonCECONY
(Millions of Dollars)2025202420252024
Operating lease cost$17$17$17$16
Operating lease cash flows$4$5$4$4