GENERAL INFORMATION AND OTHER FINANCIAL DATA - CAPITALIZED FINANCING COSTS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Capitalized Financing Costs Disclosure [Line Items]
Capitalized financing costs	$ 145	$ 73
SDG&E
Capitalized Financing Costs Disclosure [Line Items]
Capitalized financing costs	26	31
SoCalGas
Capitalized Financing Costs Disclosure [Line Items]
Capitalized financing costs	$ 24	$ 15