Regulatory Matters - Current Rate Case Narrative (Details) - CECONY - Steam - USD ($) $ in Millions	1 Months Ended
	Nov. 30, 2027	Nov. 30, 2026	Nov. 30, 2025
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount			$ 66
Public utilities, requested return on equity, percentage			9.90%
Common equity ratio			48.00%
Scenario, Forecast
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 50	$ 50