FAIR VALUE MEASUREMENTS - FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable, allowance for credit losses	$ 4	$ 4
Notes receivable, unamortized transaction costs	2	3
Long-term debt held for sale, unamortized discount and debt issuance costs	125	132
Unamortized discount and debt issuance costs	329	305
Finance lease obligations	1,264	1,293
Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term note receivable	379	369
Long-term amounts due to unconsolidated affiliates held for sale	506	477
Long-term debt held for sale	9,201	7,925
Long-term debt	32,163	29,867
Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term note receivable	372	366
Long-term amounts due to unconsolidated affiliates held for sale	488	463
Long-term debt held for sale	8,845	7,611
Long-term debt	30,194	28,282
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	0
Long-term debt held for sale	0	0
Long-term debt	0	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	488	463
Long-term debt held for sale	8,845	7,611
Long-term debt	30,194	28,282
Fair value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term note receivable	372	366
Long-term amounts due to unconsolidated affiliates held for sale	0	0
Long-term debt held for sale	0	0
Long-term debt	0	0
SDG&E
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized discount and debt issuance costs	108	97
Finance lease obligations	1,159	1,176
SDG&E \| Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	10,150	9,800
SDG&E \| Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	9,037	8,810
SDG&E \| Fair value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0	0
SDG&E \| Fair value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	9,037	8,810
SDG&E \| Fair value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0	0
SoCalGas
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized discount and debt issuance costs	85	78
Finance lease obligations	105	117
SoCalGas \| Carrying amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	8,255	8,109
SoCalGas \| Fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	7,845	7,818
SoCalGas \| Fair value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	0	0
SoCalGas \| Fair value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	7,845	7,818
SoCalGas \| Fair value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 0	$ 0

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Long-Term Debt Held For Sale, Unamortized Discount And Debt Issuance Costs

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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