SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - RESTRICTED NET ASSETS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Significant Restrictions of Subsidiaries [Line Items]
Undistributed earnings from equity method investments	$ 3,400	$ 2,900
Maximum ratio of indebtedness to total capitalization	0.65
Oncor Holdings | Related Party
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	100.00%
Sharyland Holdings, LP
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	50.00%
Cameron LNG
Significant Restrictions of Subsidiaries [Line Items]
Indirect economic and beneficial and ownership interest after financial completion	10.00%
Sempra Texas Utilities | Related Party
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 Infrastructure | Cameron LNG
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	50.20%
Sempra Infrastructure | TAG Pipelines Norte
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	$ 22,300
Unconsolidated Entities
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	19,100
SDG&E
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	10,200
Amount available for dividend distribution and loans without prior approval from regulatory agency	$ 868
Plan percentage of capital structure allocated to equity	52.00%
Maximum ratio of indebtedness to total capitalization	0.65
SoCalGas
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 8,500
Amount available for dividend distribution and loans without prior approval from regulatory agency	$ 350
Plan percentage of capital structure allocated to equity	52.00%
Maximum ratio of indebtedness to total capitalization	0.65
Oncor Holdings | Oncor Electric Delivery Company LLC | Related Party
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	80.25%
Sempra Texas Utilities | Related Party
Significant Restrictions of Subsidiaries [Line Items]
Maximum ratio of indebtedness to total capitalization	0.70
Plan percentage of capital structure allocated to debt	59.00%
Sempra Texas Utilities | Sharyland Holdings, LP | Related Party
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	50.00%
Oncor Electric Delivery Company LLC
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 18,400
Sharyland Holdings, LP | Sharyland Utilities | Related Party
Significant Restrictions of Subsidiaries [Line Items]
Ownership percentage in equity method investee	100.00%
Sharyland Utilities
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 142
Cameron LNG JV | Sempra Infrastructure
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	425
Mexican Subsidiaries | Sempra Infrastructure
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	221
TAG Pipelines Norte | Sempra Infrastructure
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	132
Port Arthur LNG I
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 35
Port Arthur LNG I | Port Arthur LNG Committed Line Of Credit Due March 2030 | Line of Credit
Significant Restrictions of Subsidiaries [Line Items]
Term of contract (in years)	7 years
Port Arthur LNG II | Sempra Infrastructure
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 2,200
SI Partners | Sempra Infrastructure
Significant Restrictions of Subsidiaries [Line Items]
Restricted net assets of consolidated or unconsolidated subsidiaries	$ 1,200