XML 85 R68.htm IDEA: XBRL DOCUMENT v3.25.2
Environmental Matters - Additional Information (Details) - Superfund Sites - Manufactured Gas Plant Sites - Maximum
$ in Millions
Jun. 30, 2025
USD ($)
Site Contingency [Line Items]  
Estimated aggregate undiscounted potential liability related environmental contaminants (up to) $ 3,391,000
CECONY  
Site Contingency [Line Items]  
Estimated aggregate undiscounted potential liability related environmental contaminants (up to) $ 3,237,000