REVENUES - RECEIVABLES FROM REVENUES FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	$ 1,737	$ 1,887
Accounts receivable – trade, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	1,603	1,767
Accounts receivable – trade, net | Community Choice Aggregation
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	135	152
Accounts receivable – other, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	22	22
Assets held for sale
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	91	77
Other long-term assets
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	21	21
SDG&E
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	930	841
SDG&E | Accounts receivable – trade, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	897	809
SDG&E | Accounts receivable – trade, net | Community Choice Aggregation
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	135	152
SDG&E | Accounts receivable – other, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	18	18
SDG&E | Due from unconsolidated affiliates – current
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	11	11
SDG&E | Other long-term assets
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	4	3
SoCalGas
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	727	980
SoCalGas | Accounts receivable – trade, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	706	958
SoCalGas | Accounts receivable – other, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	4	4
SoCalGas | Other long-term assets
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	$ 17	$ 18