DEBT AND CREDIT FACILITIES - UNCOMMITTED LETTERS OF CREDIT (Details) $ in Millions	Mar. 31, 2024 USD ($)
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	$ 512
Letters of credit outstanding
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	512
Letters of credit outstanding | SDG&E
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	25
Letters of credit outstanding | SoCalGas
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	20
Letters of credit outstanding | Other Sempra
Line of Credit Facility [Line Items]
Uncommitted letters of credit outstanding	$ 467