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Material Contingencies (Tables)
3 Months Ended
Mar. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Total Guarantees
A summary, by type and term, of Con Edison's total guarantees under these agreements at March 31, 2025 is as follows:
 
Guarantee Type0 – 3 yearsTotal
(Millions of Dollars)
Con Edison Transmission$35$35
Total$35$35