DEBT AND CREDIT FACILITIES - LONG-TERM DEBT (Details) $ in Millions	1 Months Ended			3 Months Ended
	Apr. 30, 2025 USD ($)	Mar. 31, 2025 USD ($) bank	Jan. 31, 2025 USD ($)	Mar. 31, 2025 USD ($) bank	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Total facility		$ 9,900		$ 9,900
SDG&E
Debt Instrument [Line Items]
Total facility		1,500		$ 1,500
IEnova | ECA LNG JV
Debt Instrument [Line Items]
Ownership percentage in consolidated entity (in percentage)				83.40%
Subsidiary of TOTAL SE | ECA LNG JV
Debt Instrument [Line Items]
Ownership percentage in consolidated entity (in percentage)				16.60%
First Mortgage Bonds, 5.40% April 15, 2035 | SDG&E
Debt Instrument [Line Items]
Debt amount		$ 850		$ 850
Stated rate of debt (as a percent)		5.40%		5.40%
First Mortgage Bonds, 5.40% April 15, 2035 | Secured Debt | SDG&E
Debt Instrument [Line Items]
Proceeds from debt issuance		$ 840
Unamortized debt issuance costs		$ 10		$ 10
Loan Agreement To Finance Natural Gas Liquefaction Export Facility | ECA LNG Phase 1
Debt Instrument [Line Items]
Term of debt instrument (in years)				5 years
Number of banks in syndicate | bank		7		7
Total facility		$ 1,300		$ 1,300
Debt outstanding		$ 1,100		$ 1,100	$ 1,100
Weighted average interest rate (as a percent)		7.36%		7.36%	7.29%
Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project | Port Arthur LNG
Debt Instrument [Line Items]
Debt outstanding		$ 1,200		$ 1,200	$ 1,100
Weighted average interest rate (as a percent)		5.33%		5.33%	5.33%
Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project | Domestic Line of Credit | Port Arthur LNG
Debt Instrument [Line Items]
Term of debt instrument (in years)				7 years
Total facility		$ 6,800		$ 6,800
Senior Secured Notes Issued Apr 2025 | Senior Notes | Port Arthur LNG | Subsequent Event
Debt Instrument [Line Items]
Debt amount	$ 250
Stated rate of debt (as a percent)	6.32%
Proceeds from debt issuance	$ 248
Unamortized debt issuance costs	$ 2
Senior Secured Notes Issued Jan 2025 | Senior Notes | Port Arthur LNG
Debt Instrument [Line Items]
Debt amount			$ 750
Stated rate of debt (as a percent)			6.27%
Proceeds from debt issuance			$ 742
Unamortized debt issuance costs			$ 8