DEBT AND CREDIT FACILITIES - LONG-TERM DEBT (Details) - Secured Debt - USD ($) $ in Millions	1 Months Ended
	May 31, 2025	Mar. 31, 2025
First Mortgage Bonds, 5.40% April 15, 2035 | SDG&E
Debt Instrument [Line Items]
Debt amount		$ 850
Stated rate of debt (as a percent)		5.40%
Proceeds from debt issuance		$ 840
Unamortized debt issuance costs		$ 10
First Mortgage Bonds, 5.45% June 15, 2035 | SoCalGas
Debt Instrument [Line Items]
Debt amount	$ 600
Stated rate of debt (as a percent)	5.45%
Proceeds from debt issuance	$ 592
Unamortized debt issuance costs	8
First Mortgage Bonds, 6.00% June 15, 2055 | SoCalGas
Debt Instrument [Line Items]
Debt amount	$ 500
Stated rate of debt (as a percent)	6.00%
Proceeds from debt issuance	$ 488
Unamortized debt issuance costs	$ 12