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Public Utilities, Common Equity Ratio, Percentage

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Public Utilities, Infrastructure Investment Plan

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Public Utilities, Recovery Of Late Payment Charges, Amount

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Public Utilities, Recovery Of Late Payment Charges, Return On Equity Threshold Rate

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested return on equity.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Regulatory Matters - Rate Plans (Details) - USD ($) $ in Millions			1 Months Ended							3 Months Ended		12 Months Ended
	Mar. 30, 2022	Jan. 01, 2022	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023	Apr. 30, 2022	Mar. 31, 2022	Oct. 31, 2021	Jul. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Public Utilities, General Disclosures [Line Items]
Total revenues										$ 4,060.0	$ 3,677.0
Subsidiaries
Public Utilities, General Disclosures [Line Items]
Total revenues										3,517.0	$ 3,205.0
CECONY \| Electric \| Subsidiaries \| Scenario, Forecast \| Year 1
Public Utilities, General Disclosures [Line Items]
Change in requested rate increase (decrease), amount						$ (161.0)
Requested rate increase (decrease), amount					$ 1,038.0
CECONY \| Electric \| Subsidiaries \| Scenario, Forecast \| Year 2
Public Utilities, General Disclosures [Line Items]
Change in requested rate increase (decrease), amount						(109.0)
Requested rate increase (decrease), amount				$ 744.0
CECONY \| Electric \| Subsidiaries \| Scenario, Forecast \| Year 3
Public Utilities, General Disclosures [Line Items]
Change in requested rate increase (decrease), amount						7.0
Requested rate increase (decrease), amount			$ 615.0
CECONY \| Gas \| Subsidiaries \| Scenario, Forecast \| Year 1
Public Utilities, General Disclosures [Line Items]
Change in requested rate increase (decrease), amount						(101.0)
Requested rate increase (decrease), amount					$ 402.0
CECONY \| Gas \| Subsidiaries \| Scenario, Forecast \| Year 2
Public Utilities, General Disclosures [Line Items]
Change in requested rate increase (decrease), amount						(29.0)
Requested rate increase (decrease), amount				$ 205.0
CECONY \| Gas \| Subsidiaries \| Scenario, Forecast \| Year 3
Public Utilities, General Disclosures [Line Items]
Change in requested rate increase (decrease), amount						42.0
Requested rate increase (decrease), amount			$ 176.0
CECONY \| Electric and Gas Transmission Projects \| Subsidiaries \| Earnings Adjustment Mechanisms (EAMs)
Public Utilities, General Disclosures [Line Items]
Total revenues										$ (4.5)		$ 92.0
O&R \| Electric \| Year 1 \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						4.9
O&R \| Electric \| Year 2 \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						16.2
O&R \| Electric \| Year 3 \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						23.1
O&R \| Electric \| Levelized Annual Basis \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						11.7
O&R \| Gas \| Year 1 \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						0.7
O&R \| Gas \| Year 2 \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						7.4
O&R \| Gas \| Year 3 \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						9.9
O&R \| Gas \| Levelized Annual Basis \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount						$ 4.4
O&R \| Electric and Gas Transmission Projects
Public Utilities, General Disclosures [Line Items]
Recovery of late payment charges, amount								$ 2.8
Recovery of late payment charges, return on equity threshold rate								0.05%
RECO \| Electric
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease), amount	$ 20.4	$ 16.9
Return on common equity (percent)		11.04%							0.50%
Common equity ratio percentage		47.00%
RECO \| NJBPU
Public Utilities, General Disclosures [Line Items]
Infrastructure investment plan							$ 209.0