INCOME TAXES - CHANGES IN UNRECOGNIZED TAX BENEFITS (Details) - Potential resolution of audit issues with various U.S. federal, state and local and non-U.S. taxing authorities - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Potential resolution of audit issues with various U.S. federal, state and local and non-U.S. taxing authorities	$ 242	$ 8	$ 8
SDG&E
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Potential resolution of audit issues with various U.S. federal, state and local and non-U.S. taxing authorities	6	6	6
SoCalGas
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Potential resolution of audit issues with various U.S. federal, state and local and non-U.S. taxing authorities	$ 2	$ 2	$ 2