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Consolidated Statement of Capitalization - Long-term Debt - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Other long-term debt |  | $ 293 | $ 971
Unamortized debt expense |  | (177) | (168)
Unamortized debt discount |  | (49) | (47)
TOTAL |  | 23,044 | 22,349
Less: Long-term debt due within one year |  |  | 1,967
TOTAL LONG-TERM DEBT |  | 22,604 | 20,382
TOTAL CAPITALIZATION |  | 42,641 | 39,229
CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Unamortized debt expense |  | (145) | (130)
Unamortized debt discount |  | (48) | (46)
TOTAL |  | 18,382 | 16,789
Less: Long-term debt due within one year |  |  | 640
TOTAL LONG-TERM DEBT |  | 18,382 | 16,149
TOTAL CAPITALIZATION |  | $ 34,694 | 30,998
Copper Mountain Solar 2 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [1] | 4.07% |
TOTAL PROJECT DEBT | [1] | $ 192 | 204
Coram |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
TOTAL PROJECT DEBT |  | $ 0 | 141
Coram | Minimum |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.77% |
Coram | Maximum |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.52% |
Copper Mountain Solar 3 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [1] | 4.12% |
TOTAL PROJECT DEBT | [1] | $ 247 | 264
CED Southwest |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [1] | 3.72% |
TOTAL PROJECT DEBT | [1] | $ 418 | 437
Wind Holdings |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.41% |
TOTAL PROJECT DEBT |  | $ 95 | 109
Copper Mountain Solar 1 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [1] | 3.42% |
TOTAL PROJECT DEBT | [1] | $ 49 | 56
CED California Texas |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [1] | 3.39% |
TOTAL PROJECT DEBT | [1] | $ 248 | 0
Mesquite Solar 1 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
TOTAL PROJECT DEBT |  | $ 165 | 180
Mesquite Solar 1 | Minimum |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 2.24% |
Mesquite Solar 1 | Maximum |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.03% |
Texas Solar 4 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
TOTAL PROJECT DEBT |  | $ 52 | 54
Texas Solar 4 | Minimum |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.25% |
Texas Solar 4 | Maximum |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.95% |
California Solar 2 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.94% |
TOTAL PROJECT DEBT |  | $ 88 | 93
California Solar 3 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.07% |
TOTAL PROJECT DEBT |  | $ 79 | 82
California Solar |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.78% |
TOTAL PROJECT DEBT |  | $ 171 | 178
California Solar 4 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.82% |
TOTAL PROJECT DEBT |  | $ 271 | 284
Broken Bow II |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.82% |
TOTAL PROJECT DEBT |  | $ 65 | 67
Texas Solar 5 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.53% |
TOTAL PROJECT DEBT |  | $ 135 | 140
Texas Solar 7 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.21% |
TOTAL PROJECT DEBT |  | $ 184 | 192
Upton County Solar |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.45% |
TOTAL PROJECT DEBT |  | $ 83 | 87
CED Nevada Virginia |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.77% |
TOTAL PROJECT DEBT |  | $ 228 | 0
Other project debt |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
TOTAL PROJECT DEBT |  | 7 | 10
Project Debt |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
TOTAL PROJECT DEBT |  | 2,777 | 2,578
Debentures |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
TOTAL |  | 19,750 | 18,565
Debentures | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
TOTAL |  | $ 18,125 | 16,515
Debentures | Debenture Series 2016A, 2.00% Due 2021 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 2.00% |
TOTAL |  | $ 0 | 500
Debentures | Debenture 2018C, 0.65 Percent, Due 2021 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 0.60% |
TOTAL |  | $ 0 | 640
Debentures | Debenture 2020A, 0.65 Percent, Due 2023 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 0.65% |
TOTAL |  | $ 650 | 650
Debentures | Debenture 2014B, 3.30 Percent, Due 2024 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.30% |
TOTAL |  | $ 250 | 250
Debentures | Debenture 2014B, 3.30 Percent, Due 2024 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.30% |
TOTAL |  | $ 250 | 250
Debentures | Debenture Series 2016B, 2.90% Due 2026 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 2.90% |
TOTAL |  | $ 250 | 250
Debentures | Debenture Series 2016B, 2.90% Due 2026 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 2.90% |
TOTAL |  | $ 250 | 250
Debentures | Debenture Series 1997F, 6.50% Due 2027 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 6.50% |
TOTAL |  | $ 80 | 80
Debentures | Debenture Series 2017B, 3.125% Due 2027 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.125% |
TOTAL |  | $ 350 | 350
Debentures | Debenture Series 2017B, 3.125% Due 2027 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.125% |
TOTAL |  | $ 350 | 350
Debentures | Debenture Series 2018A, 3.80% Due 2028 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.80% |
TOTAL |  | $ 300 | 300
Debentures | Debenture Series 2018A, 3.80% Due 2028 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.80% |
TOTAL |  | $ 300 | 300
Debentures | Debenture Series 2018D, 4.00% Due 2028 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.00% |
TOTAL |  | $ 500 | 500
Debentures | Debenture Series 2018D, 4.00% Due 2028 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.00% |
TOTAL |  | $ 500 | 500
Debentures | Debenture 2019B, 2.94 Percent, Due 2029 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 2.94% |
TOTAL |  | $ 44 | 44
Debentures | Debenture 2020A, 3.35 Percent, Due 2030 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.35% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2020A, 3.35 Percent, Due 2030 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.35% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2020A, 2.02 Percent, Due 2030 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 2.02% |
TOTAL |  | $ 35 | 35
Debentures | Debenture 2021A, 2.40 Percent, Due 2031 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 2.40% |
TOTAL |  | $ 900 | 0
Debentures | Debenture 2021A, 2.40 Percent, Due 2031 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 2.40% |
TOTAL |  | $ 900 | 0
Debentures | Debenture 2021A, 2.31 Percent, Due 2031 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 2.31% |
TOTAL |  | $ 45 | 0
Debentures | Debenture Series 2003A, 5.875% Due 2033 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.875% |
TOTAL |  | $ 175 | 175
Debentures | Debenture Series 2003A, 5.875% Due 2033 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.875% |
TOTAL |  | $ 175 | 175
Debentures | Debenture Series 2003C, 5.10% Due 2033 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.10% |
TOTAL |  | $ 200 | 200
Debentures | Debenture Series 2003C, 5.10% Due 2033 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.10% |
TOTAL |  | $ 200 | 200
Debentures | Debenture Series 2004B, 5.70% Due 2034 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.70% |
TOTAL |  | $ 200 | 200
Debentures | Debenture Series 2004B, 5.70% Due 2034 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.70% |
TOTAL |  | $ 200 | 200
Debentures | Debenture Series 2005A, 5.30% Due 2035 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.30% |
TOTAL |  | $ 350 | 350
Debentures | Debenture Series 2005A, 5.30% Due 2035 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.30% |
TOTAL |  | $ 350 | 350
Debentures | Debenture Series 2005B, 5.25% Due 2035 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.25% |
TOTAL |  | $ 125 | 125
Debentures | Debenture Series 2005B, 5.25% Due 2035 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.25% |
TOTAL |  | $ 125 | 125
Debentures | Debenture Series 2006A, 5.85% Due 2036 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.85% |
TOTAL |  | $ 400 | 400
Debentures | Debenture Series 2006A, 5.85% Due 2036 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.85% |
TOTAL |  | $ 400 | 400
Debentures | Debenture Series 2006B, 6.20% Due 2036 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 6.20% |
TOTAL |  | $ 400 | 400
Debentures | Debenture Series 2006B, 6.20% Due 2036 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 6.20% |
TOTAL |  | $ 400 | 400
Debentures | Debenture Series 2006E, 5.70% Due 2036 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.70% |
TOTAL |  | $ 250 | 250
Debentures | Debenture Series 2006E, 5.70% Due 2036 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.70% |
TOTAL |  | $ 250 | 250
Debentures | Debenture Series 2007A, 6.30% Due 2037 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 6.30% |
TOTAL |  | $ 525 | 525
Debentures | Debenture Series 2007A, 6.30% Due 2037 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 6.30% |
TOTAL |  | $ 525 | 525
Debentures | Debenture 2008B, 6.75 Percent, Due 2038 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 6.75% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2008B, 6.75 Percent, Due 2038 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 6.75% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2009B, 6.00 Percent, Due 2039 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 6.00% |
TOTAL |  | $ 60 | 60
Debentures | Debenture 2009C, 5.50 Percent, Due 2039 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.50% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2009C, 5.50 Percent, Due 2039 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.50% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2019C, 3.46 Percent, Due 2039 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.46% |
TOTAL |  | $ 38 | 38
Debentures | Debenture 2010B, 5.70 Percent, Due 2040 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.70% |
TOTAL |  | $ 350 | 350
Debentures | Debenture 2010B, 5.70 Percent, Due 2040 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.70% |
TOTAL |  | $ 350 | 350
Debentures | Debenture 2010B, 5.50 Percent, Due 2040 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 5.50% |
TOTAL |  | $ 115 | 115
Debentures | Debenture 2012A, 4.20 Percent, Due 2042 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.20% |
TOTAL |  | $ 400 | 400
Debentures | Debenture 2012A, 4.20 Percent, Due 2042 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.20% |
TOTAL |  | $ 400 | 400
Debentures | Debenture 2013A, 3.95 Percent, Due 2043 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.95% |
TOTAL |  | $ 700 | 700
Debentures | Debenture 2013A, 3.95 Percent, Due 2043 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.95% |
TOTAL |  | $ 700 | 700
Debentures | Debenture 2014A, 4.45 Percent, Due 2044 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.45% |
TOTAL |  | $ 850 | 850
Debentures | Debenture 2014A, 4.45 Percent, Due 2044 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.45% |
TOTAL |  | $ 850 | 850
Debentures | Debenture 2015A, 4.50 Percent, Due 2045 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.50% |
TOTAL |  | $ 650 | 650
Debentures | Debenture 2015A, 4.50 Percent, Due 2045 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.50% |
TOTAL |  | $ 650 | 650
Debentures | Debenture 2015A, 4.95 Percent, Due 2045 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.95% |
TOTAL |  | $ 120 | 120
Debentures | Debenture Series 2015B, 4.69% due 2045 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.69% |
TOTAL |  | $ 100 | 100
Debentures | Debenture 2016A, 3.85 Percent, Due 2046 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.85% |
TOTAL |  | $ 550 | 550
Debentures | Debenture 2016A, 3.85 Percent, Due 2046 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.85% |
TOTAL |  | $ 550 | 550
Debentures | Debenture Series 2016A. 3.88% Due 2046 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.88% |
TOTAL |  | $ 75 | 75
Debentures | Debenture Series 2017A, 3.875% Due 2047 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.875% |
TOTAL |  | $ 500 | 500
Debentures | Debenture Series 2017A, 3.875% Due 2047 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.875% |
TOTAL |  | $ 500 | 500
Debentures | Debenture Series 2018E, 4.65% Due 2048 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.65% |
TOTAL |  | $ 600 | 600
Debentures | Debenture Series 2018E, 4.65% Due 2048 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.65% |
TOTAL |  | $ 600 | 600
Debentures | Debenture Series 2018A, 4.35% Due 2048 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.35% |
TOTAL |  | $ 125 | 125
Debentures | Debenture Series 2018B, 4.35% Due 2048 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.35% |
TOTAL |  | $ 25 | 25
Debentures | Debenture 2019A, 4.125 Percent, Due 2049 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.125% |
TOTAL |  | $ 700 | 700
Debentures | Debenture 2019A, 4.125 Percent, Due 2049 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.125% |
TOTAL |  | $ 700 | 700
Debentures | Debenture 2019A, 3.73 Percent, Due 2049 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.73% |
TOTAL |  | $ 43 | 43
Debentures | Debenture 2020B, 3.95 Percent, Due 2050 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.95% |
TOTAL |  | $ 1,000 | 1,000
Debentures | Debenture 2020B, 3.95 Percent, Due 2050 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.95% |
TOTAL |  | $ 1,000 | 1,000
Debentures | Debenture 2020B, 3.24 Percent, Due 2050 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.24% |
TOTAL |  | $ 40 | 40
Debentures | Debenture 2021B, 3.170 Percent, Due 2051 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.17% |
TOTAL |  | $ 30 | 0
Debentures | Debenture 2021C, 3.20 Percent, Due 2051 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.20% |
TOTAL |  | $ 600 | 0
Debentures | Debenture 2021C, 3.200 Percent, Due 2051 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.20% |
TOTAL |  | $ 600 | 0
Debentures | Debenture Series 2014C, 4.625% Due 2054 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.625% |
TOTAL |  | $ 750 | 750
Debentures | Debenture Series 2014C, 4.625% Due 2054 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.625% |
TOTAL |  | $ 750 | 750
Debentures | Debenture Series 2016C, 4.30% Due 2056 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.30% |
TOTAL |  | $ 500 | 500
Debentures | Debenture Series 2016C, 4.30% Due 2056 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.30% |
TOTAL |  | $ 500 | 500
Debentures | Debenture Series 2017C, 4.00% Due 2057 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.00% |
TOTAL |  | $ 350 | 350
Debentures | Debenture Series 2017C, 4.00% Due 2057 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.00% |
TOTAL |  | $ 350 | 350
Debentures | Debenture Series 2018B, 4.50% Due 2058 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.50% |
TOTAL |  | $ 700 | 700
Debentures | Debenture Series 2018B, 4.50% Due 2058 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 4.50% |
TOTAL |  | $ 700 | 700
Debentures | Debenture 2019B, 3.70 Percent, Due 2059 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.70% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2019B, 3.70 Percent, Due 2059 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.70% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2018C, 2.75 Percent, Due 2021 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 0.60% |
TOTAL |  | $ 0 | 640
Debentures | Debenture 2020C, 3.00 Percent, Due 2060 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.00% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2020C, 3.00 Percent, Due 2060 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.00% |
TOTAL |  | $ 600 | 600
Debentures | Debenture 2021B, 3.60 Percent, Due 2061 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.60% |
TOTAL |  | $ 750 | 0
Debentures | Debenture 2021B, 3.60 Percent, Due 2061 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate |  | 3.60% |
TOTAL |  | $ 750 | 0
Tax-Exempt Debt |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
TOTAL PROJECT DEBT |  | 450 | 450
Tax-Exempt Debt | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
TOTAL |  | $ 450 | 450
Tax-Exempt Debt | Tax Exempt Debt Series 2010A Due 2036 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [2] | 0.10% |
TOTAL PROJECT DEBT | [2] | $ 225 | 225
Tax-Exempt Debt | Tax Exempt Debt Series 2010A Due 2036 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [3] | 0.10% |
TOTAL | [3] | $ 225 | 225
Tax-Exempt Debt | Tax Exempt Debt Series 2004C, 1.663% Due 2039 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [2] | 0.10% |
TOTAL PROJECT DEBT | [2] | $ 99 | 99
Tax-Exempt Debt | Tax Exempt Debt Series 2004C, 1.663% Due 2039 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [3] | 0.10% |
TOTAL | [3] | $ 99 | 99
Tax-Exempt Debt | Tax-Exempt Debt Series 2005A, 1.627% Due 2039 |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [2] | 0.09% |
TOTAL PROJECT DEBT | [2] | $ 126 | 126
Tax-Exempt Debt | Tax-Exempt Debt Series 2005A, 1.627% Due 2039 | CECONY |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |
Interest Rate | [3] | 0.09% |
TOTAL | [3] | $ 126 | $ 126
[1] | (b) December 31, 2021 effective rates shown, reflecting variable interest rates on the debt that are reset quarterly or semi-annually and the effect of applicable interest rate swaps, if any.
[2] | Rates reset weekly; December 31, 2021 rates shown.
[3] | Rates reset weekly; December 31, 2021 rates shown.

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