COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS (Details) - Sempra LNG [Member] $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Natural Gas Storage and Transportation Contracts [Member]
Loss Contingencies [Line Items]
Increase contractual commitments	$ 136
Change in 2020	(24)
Change in 2021	23
Change in 2022	21
Change in 2023	19
Change in 2024	19
Change thereafter	78
Liquefied Natural Gas Contracts [Member]
Loss Contingencies [Line Items]
Change in 2020	(135)
Change in 2021	(26)
Change in 2022	(35)
Change in 2023	(36)
Change in 2024	(43)
Change thereafter	$ (174)