INVESTMENTS IN UNCONSOLIDATED ENTITIES - NARRATIVE (Details) $ in Millions	1 Months Ended		9 Months Ended
	Jun. 30, 2021 USD ($)	Jul. 31, 2020 USD ($) projectOwner bank	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Mar. 31, 2021	Feb. 28, 2021
Schedule of Equity Method Investments [Line Items]
Proceeds from distributions received			$ 643	$ 727
Distributions from investments			0	365
Sempra Texas Utilities | Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Contribution			256	151
Sempra Infrastructure | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Guarantees, carrying value			16
Sempra Infrastructure | Cameron LNG JV
Schedule of Equity Method Investments [Line Items]
Contribution			19
Proceeds from distributions received			$ 388	496
Corporate Joint Venture | Sempra Infrastructure | Cameron LNG JV
Schedule of Equity Method Investments [Line Items]
Number of project owners | projectOwner		4
Proceeds from related party debt		$ 1,500
Number of project owners sending direct proceeds | projectOwner		2
Number of project owners sending proceeds from external lenders | projectOwner		2
Liability cap (as a percent)			130.00%
Liability cap, amount			$ 979
Corporate Joint Venture | Sempra Infrastructure | Cameron LNG JV | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Distributions from investments		$ 753
Proceeds from related party debt		$ 753
Number of banks | bank		8
Oncor Holdings | Sempra Texas Utilities
Schedule of Equity Method Investments [Line Items]
Proceeds from distributions received			$ 255	239
Distributions from investments				361
ESJ | IEnova | Sempra Infrastructure
Schedule of Equity Method Investments [Line Items]
Acquired percentage interest					50.00%
Oncor Holdings | Sempra Texas Holdings Corp | Sempra Texas Intermediate Holding Company LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage in consolidated entity			100.00%
Oncor Electric Delivery Company LLC. | Oncor Holdings | Sempra Texas Utilities
Schedule of Equity Method Investments [Line Items]
Acquired percentage interest			80.25%
Cameron LNG JV | Sempra Infrastructure
Schedule of Equity Method Investments [Line Items]
Ownership percentage in consolidated entity			50.20%
ESJ | Sempra Infrastructure
Schedule of Equity Method Investments [Line Items]
Distributions from investments				$ 4
ESJ | ESJ | IEnova | Sempra Infrastructure
Schedule of Equity Method Investments [Line Items]
Ownership percentage						50.00%
TAG | Sempra Infrastructure
Schedule of Equity Method Investments [Line Items]
Proceeds from distributions received			$ 32
Other current assets | Sempra Infrastructure | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Guarantees, carrying value			7
Other long-term assets | Sempra Infrastructure | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Guarantees, carrying value			9
Promissory Note for SDSRA Distribution | Corporate Joint Venture | Sempra Infrastructure | Cameron LNG JV
Schedule of Equity Method Investments [Line Items]
Proceeds from distributions received	$ 165
Promissory Note for SDSRA Distribution | Other Current Liabilities | Corporate Joint Venture | Sempra Infrastructure | Cameron LNG JV
Schedule of Equity Method Investments [Line Items]
Guarantees, carrying value			$ 21
Promissory Note for SDSRA Distribution | Deferred Credits and Other | Corporate Joint Venture | Sempra Infrastructure | Cameron LNG JV
Schedule of Equity Method Investments [Line Items]
Senior note, liability	$ 22