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ORGANIZATION AND BASIS OF PRESENTATION - Summary of Changes in Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Line Items]
Goodwill	$ 5,618	$ 5,618
Distribution Segment
Goodwill [Line Items]
Goodwill	3,222
Integrated Segment
Goodwill [Line Items]
Goodwill	1,953
Stand-Alone Transmission Segment
Goodwill [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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