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Variable Interest Entities - Additional Information (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 01, 2023
USD ($)
solarProject
Jun. 30, 2023
USD ($)
project
Jun. 30, 2023
USD ($)
project
Dec. 31, 2022
Jun. 30, 2021
USD ($)
Variable Interest Entity [Line Items]          
Number of solar projects 2 2 2    
Clean Energy Businesses          
Variable Interest Entity [Line Items]          
Equity method investments $ 20,000,000 $ 0 $ 0   $ 11,000,000
Income (loss) before tax   (4,000,000) (4,000,000)    
Income (loss) after tax   $ (3,000,000) $ (3,000,000)    
Variable Interest Entity, Primary Beneficiary | Con Edison Development | CED Nevada Virginia | Clean Energy Businesses          
Variable Interest Entity [Line Items]          
Percentage of variable interests (less than)       100.00%  
Variable Interest Entity, Primary Beneficiary | Con Edison Development | Tax Equity Projects | Clean Energy Businesses          
Variable Interest Entity [Line Items]          
Percentage of variable interests (less than) 0.00%     100.00%