DEBT AND CREDIT FACILITIES - UNCOMMITTED LETTERS OF CREDIT (Details) $ in Millions	Mar. 31, 2023 USD ($)
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	$ 533
Letter of Credit
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	533
Letter of Credit | San Diego Gas and Electric Company
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	15
Letter of Credit | Southern California Gas Company
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	20
Letter of Credit | Sempra Infrastructure
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	330
Letter of Credit | Parent and Other
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	$ 168