Variable Interest Entities (VIEs) (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Variable Interest Entity [Line Items]
Operating Revenues	$ 2,760	$ 3,755
Operation and Maintenance	783	743
Long Island ServCo [Member]
Variable Interest Entity [Line Items]
Operating Revenues	150	128
Operation and Maintenance	$ 150	$ 128

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