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Electricity Purchase Agreements - Summary of Capacity, Energy and Other Fixed Payments (Details) - CECONY - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Long-term Contract for Purchase of Electric Power [Line Items] |  |  |
Capacity, energy and other fixed payments | $ 231 | $ 318 | $ 552
Indian Point |  |  |
Long-term Contract for Purchase of Electric Power [Line Items] |  |  |
Capacity, energy and other fixed payments | 0 | 6 | 211
Linden Cogeneration |  |  |
Long-term Contract for Purchase of Electric Power [Line Items] |  |  |
Capacity, energy and other fixed payments | 0 | 0 | 114
Astoria Generating Company |  |  |
Long-term Contract for Purchase of Electric Power [Line Items] |  |  |
Capacity, energy and other fixed payments | 116 | 179 | 92
Brooklyn Navy Yard |  |  |
Long-term Contract for Purchase of Electric Power [Line Items] |  |  |
Capacity, energy and other fixed payments | 115 | 124 | 117
Cogen Technologies |  |  |
Long-term Contract for Purchase of Electric Power [Line Items] |  |  |
Capacity, energy and other fixed payments | $ 0 | $ 9 | $ 18

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- Definition Long-term Contract for Purchase of Capacity and Energy, Amount of Fixed Payments + 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 No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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