COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Loss Contingencies [Line Items]
Potential monetary sanctions threshold	$ 1
Potential monetary sanctions threshold (as a percent)	1.00%
Environmental cost, potential monetary sanctions threshold, actual amount	$ 45
San Diego Gas and Electric Company
Loss Contingencies [Line Items]
Environmental cost, potential monetary sanctions threshold, actual amount	18
Southern California Gas Company
Loss Contingencies [Line Items]
Environmental cost, potential monetary sanctions threshold, actual amount	13
Sempra Infrastructure | Liquefied Natural Gas Contracts
Loss Contingencies [Line Items]
Change in 2022	(351)
Change in 2023	340
Change in 2024	257
Change in 2025	241
Change in 2026	214
Change thereafter	$ 501