FAIR VALUE MEASUREMENTS - FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, allowance for credit losses	$ 4	$ 5
Notes receivable, unamortized issuance costs	3	3
Long-term debt held for sale, unamortized discount and debt issuance costs	132
Unamortized discount (net of premium) and debt issuance costs	305	382
Finance lease obligations	1,293	1,315
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term note receivable	369	351
Long-term amounts due to unconsolidated affiliates held for sale	477
Long-term debt held for sale	7,925
Total long-term debt	29,867	32,899
Long-term amounts due to unconsolidated affiliates		352
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term note receivable	366	334
Long-term amounts due to unconsolidated affiliates held for sale	463
Long-term debt held for sale	7,611
Total long-term debt	28,282	30,193
Long-term amounts due to unconsolidated affiliates		324
Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term note receivable	0	0
Long-term amounts due to unconsolidated affiliates held for sale	0
Long-term debt held for sale	0
Total long-term debt	0	0
Long-term amounts due to unconsolidated affiliates		0
Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term note receivable	0	0
Long-term amounts due to unconsolidated affiliates held for sale	463
Long-term debt held for sale	7,611
Total long-term debt	28,282	30,193
Long-term amounts due to unconsolidated affiliates		324
Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term note receivable	366	334
Long-term amounts due to unconsolidated affiliates held for sale	0
Long-term debt held for sale	0
Total long-term debt	0	0
Long-term amounts due to unconsolidated affiliates		0
SDG&E
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized discount (net of premium) and debt issuance costs	97	95
Finance lease obligations	1,176	1,205
SDG&E | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	9,800	8,950
SDG&E | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	8,810	7,760
SDG&E | Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	0	0
SDG&E | Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	8,810	7,760
SDG&E | Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	0	0
SoCalGas
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized discount (net of premium) and debt issuance costs	78	65
Finance lease obligations	117	110
SoCalGas | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	8,109	7,359
SoCalGas | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	7,818	6,880
SoCalGas | Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	0	0
SoCalGas | Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	7,818	6,880
SoCalGas | Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total long-term debt	$ 0	$ 0