Variable Interest Entities (VIEs) - Additional information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Variable Interest Entity [Line Items]
Operating Revenues	$ 2,805	$ 2,423	$ 6,027	$ 5,183
Operation and Maintenance	854	824	1,773	1,607
Long Island ServCo [Member]
Variable Interest Entity [Line Items]
Operating Revenues	155	142	307	292
Operation and Maintenance	$ 155	$ 142	$ 307	$ 292

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