SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - AFFILIATES REVENUE AND COST OF SALES (Details) $ in Millions	1 Months Ended		12 Months Ended
	Jan. 31, 2022 MW	Jun. 30, 2015 MW	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Related Party Transaction [Line Items]
Revenues			$ 13,702	$ 13,185	$ 16,720
Interest expense			1,532	1,049	1,309
SDG&E
Related Party Transaction [Line Items]
Revenues			5,697	5,341	5,597
Interest expense			559	525	497
Operating revenues			5,697	5,341	5,597
SoCalGas
Related Party Transaction [Line Items]
Revenues			6,291	6,209	8,289
Interest expense			367	323	285
Operating revenues			$ 6,291	6,209	8,289
California Utilities | Minimum
Related Party Transaction [Line Items]
Variable percentage rate			0.13%
California Utilities | Maximum
Related Party Transaction [Line Items]
Variable percentage rate			0.20%
Related Party
Related Party Transaction [Line Items]
Revenues			$ 34	40	44
Interest expense			18	16	15
Related Party | SDG&E
Related Party Transaction [Line Items]
Operating revenues			22	23	21
Cost of sales			134	146	113
Power purchase agreement term	20 years	20 years
Generating capacity (in mw) | MW	108	155
Related Party | SoCalGas
Related Party Transaction [Line Items]
Operating revenues			173	169	124
Cost of sales			$ (3)	$ (5)	$ 35