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Capitalization (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Disclosure [Abstract] |
Schedule of Long-Term Debt Maturities | Long-term debt maturing in the period 2021-2025 is as follows:
(Millions of Dollars) | Con Edison |  |  | CECONY
2021 | $1,967 |  |  | $640
2022 | 437 |  |  | — |
2023 | 966 |  |  | — |
2024 | 385 |  |  | 250 |
2025 | 315 |  |  | — |
Carrying Amounts and Fair Values of Long-Term Debt | The carrying amounts and fair values of long-term debt at December 31, 2020 and 2019 are:
(Millions of Dollars) | 2020 |  | 2019
Long-Term Debt (including current portion) (a) | Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Con Edison | $22,349 |  | $26,808 |  | $19,973 |  | $22,738
CECONY | $16,789 |  | $20,974 |  | $14,964 |  | $17,505
(a)Amounts shown are net of unamortized debt expense and unamortized debt discount of $215 million and $176 million for Con Edison and CECONY, respectively, as of December 31, 2020 and $178 million and $151 million for Con Edison and CECONY, respectively, as of December 31, 2019.

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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