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ORGANIZATION AND BASIS OF PRESENTATION - Summary of Changes in Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 5,618	$ 5,618
Regulated Distribution
Goodwill [Line Items]
Goodwill	5,004
Regulated Transmission
Goodwill [Line Items]
Goodwill	$ 614

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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