REVENUES - RECEIVABLES FROM REVENUES FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	$ 2,334	$ 1,977
Accounts receivable – trade, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	2,291	1,886
Accounts receivable – trade, net | Community Choice Aggregation
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	72	24
Accounts receivable – other, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	25	19
Due from unconsolidated affiliates – current
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	9	2
Other long-term assets(3)
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	9	70
San Diego Gas and Electric Company
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	819	751
San Diego Gas and Electric Company | Customers Under California Arrearage Payment Program
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	51	63
San Diego Gas and Electric Company | Accounts receivable – trade, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	799	715
San Diego Gas and Electric Company | Accounts receivable – other, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	12	9
San Diego Gas and Electric Company | Due from unconsolidated affiliates – current
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	2	2
San Diego Gas and Electric Company | Other long-term assets(3)
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	6	25
SoCalGas
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	1,311	1,139
SoCalGas | Customers Under California Arrearage Payment Program
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	59	79
SoCalGas | Accounts receivable – trade, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	1,295	1,084
SoCalGas | Accounts receivable – other, net
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	13	10
SoCalGas | Other long-term assets(3)
Contract with Customer, Asset [Line Items]
Receivables from revenues from contracts with customers	$ 3	$ 45