SEMPRA – INVESTMENTS IN UNCONSOLIDATED ENTITIES - SUMMARY OF INVESTMENTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Equity method investment	$ 14,266	$ 13,665
Other investments	2,244	2,012
Goodwill	1,602	1,602
Earnings recorded before tax	633	666	$ 614
Earnings recorded net of income tax	848	832	729
Equity earnings	1,481	1,498	1,343
Payments to acquire equity method investments	382	376	633
Distributions from investments	948	886	1,360
Undistributed earnings from equity method investments	2,500	2,000
Undistributed earnings, equity method investments, less than 50 percent owned	$ 496
Sharyland Holdings, LP
Schedule of Equity Method Investments [Line Items]
Ownership percentage in equity method investee	50.00%
RBS Sempra Commodities
Schedule of Equity Method Investments [Line Items]
Earnings recorded before tax	$ 40		50	$ (100)
Parent and other:
Schedule of Equity Method Investments [Line Items]
Other investments	1	0
Total
Schedule of Equity Method Investments [Line Items]
Other investments	2,244	2,012
Sempra Texas Utilities
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments	367	346	566
Distributions from investments	$ 445	$ 345	688
Sempra Texas Utilities | Oncor Holdings
Schedule of Equity Method Investments [Line Items]
Ownership percentage in equity method investee	100.00%	100.00%
Equity method investment	$ 14,266	$ 13,665
Difference between carrying amount of equity method investment and underlying equity	2,870	2,856
Goodwill	2,868	2,868
Equity method investment, difference between carrying amount and underlying equity, aoci	69	69
Difference between carrying amount and underlying equity, tax sharing liability	67	81
Earnings recorded net of income tax	694	735	617
Payments to acquire equity method investments	363	341	566
Distributions from investments	441	340	681
Total distributions from equity method investments, including the tax sharing agreement	$ 558	$ 443	753
Sempra Texas Utilities | Sharyland Holdings, LP
Schedule of Equity Method Investments [Line Items]
Ownership percentage in equity method investee	50.00%	50.00%
Equity method investment	$ 114	$ 107
Difference between carrying amount of equity method investment and underlying equity	41	41
Earnings recorded before tax	7	7	5
Payments to acquire equity method investments	4	5	0
Distributions from investments	4	5	7
Sempra Infrastructure
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments	15	30	67
Distributions from investments	$ 503	$ 541	672
Sempra Infrastructure | Cameron LNG JV
Schedule of Equity Method Investments [Line Items]
Ownership percentage in equity method investee	50.20%	50.20%
Equity method investment	$ 1,008	$ 886
Difference between carrying amount of equity method investment and underlying equity	262	270
Earnings recorded before tax	586	659	559
Basis difference in equity earnings related to AOCI	9	12	3
Payments to acquire equity method investments	15	30	2
Distributions from investments	456	509	623
Sempra Infrastructure | ESJ JV
Schedule of Equity Method Investments [Line Items]
Earnings recorded net of income tax	0	0	2
Payments to acquire equity method investments	0	0	65
Distributions from investments	$ 0	$ 0	4
Sempra Infrastructure | IMG JV
Schedule of Equity Method Investments [Line Items]
Ownership percentage in equity method investee	40.00%	40.00%
Equity method investment	$ 620	$ 591
Difference between carrying amount of equity method investment and underlying equity	5	5
Earnings recorded net of income tax	40	68	83
Distributions from investments	$ 11	$ 0	0
Sempra Infrastructure | TAG Pipelines Norte
Schedule of Equity Method Investments [Line Items]
Ownership percentage in equity method investee	50.00%	50.00%
Equity method investment	$ 501	$ 428
Difference between carrying amount of equity method investment and underlying equity	130	130
Earnings recorded net of income tax	114	29	27
Distributions from investments	36	32	45
Parent and other | RBS Sempra Commodities
Schedule of Equity Method Investments [Line Items]
Earnings recorded before tax	$ 40	$ 0	$ 50