v3.26.1
Environmental Matters - Additional Information (Details) - Superfund Sites - Manufactured Gas Plant Sites - Maximum
$ in Thousands
Jun. 30, 2026
USD ($)
Site Contingency [Line Items]  
Estimated aggregate undiscounted potential liability related environmental contaminants $ 3,380,000
CECONY  
Site Contingency [Line Items]  
Estimated aggregate undiscounted potential liability related environmental contaminants $ 3,540,000