DEBT AND CREDIT FACILITIES - SCHEDULE OF WEIGHTED-AVERAGE INTEREST RATES (Details)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Sempra
Line of Credit Facility [Line Items]
Weighted average interest rate on total short-term debt outstanding (as a percent)	0.60%	0.83%	2.31%
San Diego Gas and Electric Company [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate on total short-term debt outstanding (as a percent)	0.65%	0.00%	1.97%
SoCalGas
Line of Credit Facility [Line Items]
Weighted average interest rate on total short-term debt outstanding (as a percent)	0.21%	0.14%	1.86%