SEGMENT AND RELATED INFORMATION - Electric Utilities' Revenues (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue from External Customer [Line Items]
Total operating revenues	$ 26,724	$ 25,253	$ 29,279
Wholesale electric revenues
Revenue from External Customer [Line Items]
Total operating revenues	2,431	2,467	3,641
Electric Utilities
Revenue from External Customer [Line Items]
Total operating revenues	21,603	19,998	22,873
Electric Utilities \| Retail electric revenues
Revenue from External Customer [Line Items]
Total operating revenues	17,790	16,343	18,197
Electric Utilities \| Wholesale electric revenues
Revenue from External Customer [Line Items]
Total operating revenues	2,431	2,467	3,641
Electric Utilities \| Other
Revenue from External Customer [Line Items]
Total operating revenues	$ 1,382	$ 1,188	$ 1,035

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