SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - RESTRICTED NET ASSETS (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Significant Restrictions of Subsidiaries [Line Items]
Undistributed earnings from equity method investments	$ 2,000	$ 1,500
Cameron LNG
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	50.20%
Indirect economic and beneficial and ownership interest after financial completion	10.00%
Sharyland Holdings, LP
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	50.00%
Sempra Texas Utilities | Oncor Holdings
Significant Restrictions of Subsidiaries [Line Items]
Plan percentage of capital structure allocated to equity	42.50%
Maximum ratio of indebtedness to total capitalization	0.65
Plan percentage of capital structure allocated to debt	57.50%
Sempra Texas Utilities | Oncor Holdings | Oncor Holdings
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	100.00%
Sempra Texas Utilities | Oncor Electric Delivery Company LLC | Oncor Holdings
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	80.25%
Sempra Infrastructure
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated subsidiaries	$ 330
Restricted net assets of unconsolidated subsidiaries	460
Sempra Infrastructure | Gazprom
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	89
Sempra Infrastructure | Mexican Subsidiaries
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	239
Sempra Infrastructure | IEnova Pipelines
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	2
Sempra Infrastructure | Cameron LNG JV
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	396
Sempra Infrastructure | TAG JV
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 64
Sempra Infrastructure | TAG JV | Cameron LNG
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	50.00%
Consolidated Entities
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 15,300
Unconsolidated Entities
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	14,000
San Diego Gas and Electric Company
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	8,600
Amount available for dividend distribution and loans without prior approval from regulatory agency	$ 504
Plan percentage of capital structure allocated to equity	52.00%
SoCalGas
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 6,400
Amount available for dividend distribution and loans without prior approval from regulatory agency	$ 347
Plan percentage of capital structure allocated to equity	52.00%
California Utilities
Significant Restrictions of Subsidiaries [Line Items]
Maximum ratio of indebtedness to total capitalization	0.65
Sempra Texas Utilities | Sharyland Holdings, LP | Sharyland Holdings, LP
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	50.00%
Sempra Texas Utilities | Sharyland Utilities
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 105
Maximum ratio of indebtedness to total capitalization	0.70
Plan percentage of capital structure allocated to debt	60.00%
Sempra Texas Utilities | Sharyland Utilities | Sharyland Holdings, LP
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	100.00%
Oncor Electric Delivery Company LLC
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 13,500