DEBT AND CREDIT FACILITIES - WEIGHTED-AVERAGE INTEREST RATES AND INTEREST RATE SWAPS (Details)	Mar. 31, 2022	Dec. 31, 2021
Sempra
Debt Instrument [Line Items]
Weighted average interest rate on total short-term debt outstanding	1.14%	0.60%
San Diego Gas and Electric Company
Debt Instrument [Line Items]
Weighted average interest rate on total short-term debt outstanding	0.00%	0.65%
Southern California Gas Company
Debt Instrument [Line Items]
Weighted average interest rate on total short-term debt outstanding	0.00%	0.21%