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Fair Value Measurements - Schedule of Commodity Derivatives (Details) - Level 3 $ in Millions | Dec. 31, 2024 USD ($) $ / MWh $ / kW-month
--- | ---
CECONY |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Fair Value of commodity derivatives | $ | $ (6)
Electricity | Forward Capacity Prices |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Fair Value of commodity derivatives | $ | (16)
Electricity | Forward Capacity Prices | CECONY |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Fair Value of commodity derivatives | $ | $ (7)
Electricity | Forward Capacity Prices | Minimum | CECONY | Subsidiaries |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | $ / kW-month | 0.73
Electricity | Forward Energy Prices | Minimum |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | 0.73
Electricity | Forward Energy Prices | Maximum |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | 7.14
Electricity | Forward Energy Prices | Maximum | CECONY | Subsidiaries |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | 7.14
Electricity | Forward Energy Prices | Weighted Average |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | 3.69
Electricity | Forward Energy Prices | Weighted Average | CECONY | Subsidiaries |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | 3.75
Transmission Congestion Contracts | Inter-Zonal Forward Price Curves |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Fair Value of commodity derivatives | $ | $ 1
Transmission Congestion Contracts | Inter-Zonal Forward Price Curves | CECONY |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Fair Value of commodity derivatives | $ | $ 1
Transmission Congestion Contracts | Inter-Zonal Forward Price Curves | Minimum |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | (0.20)
Transmission Congestion Contracts | Inter-Zonal Forward Price Curves | Minimum | CECONY | Subsidiaries |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | (0.20)
Transmission Congestion Contracts | Inter-Zonal Forward Price Curves | Maximum |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | 3.88
Transmission Congestion Contracts | Inter-Zonal Forward Price Curves | Maximum | CECONY | Subsidiaries |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | 3.88
Transmission Congestion Contracts | Inter-Zonal Forward Price Curves | Weighted Average |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | 1.85
Transmission Congestion Contracts | Inter-Zonal Forward Price Curves | Weighted Average | CECONY | Subsidiaries |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Unobservable Inputs Range (dollar per unit) | 1.85
Total Con Edison - Commodity |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |
Fair Value of commodity derivatives | $ | $ (15)

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