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ORGANIZATION AND BASIS OF PRESENTATION - Schedule of Goodwill (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Goodwill	$ 5,618	$ 5,618
Distribution Segment
Property, Plant and Equipment [Line Items]
Goodwill	3,222
Integrated Segment
Property, Plant and Equipment [Line Items]
Goodwill	1,953
Stand-Alone Transmission Segment
Property, Plant and Equipment [Line Items]
Goodwill	$ 443

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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