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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.