Variable Interest Entities (VIEs) - Additional information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Variable Interest Entity [Line Items]
Operating Revenues	$ 2,642	$ 2,456	$ 7,825	$ 8,632
Operation and Maintenance	808	792	2,415	2,279
Long Island ServCo [Member]
Variable Interest Entity [Line Items]
Operating Revenues	157	140	449	397
Operation and Maintenance	$ 157	$ 140	$ 449	$ 397

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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+ Details

- Definition

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.

+ References + Details