DEBT AND CREDIT FACILITIES - SCHEDULE OF CALLABLE LONG-TERM DEBT (Details) $ in Millions	Dec. 31, 2021 USD ($)
Schedule Of Callable Long-term Debt [Line Items]
Callable long-term debt, not subject to make-whole provisions	$ 2,603
Callable long-term debt, subject to make-whole provisions	17,337
San Diego Gas and Electric Company [Member]
Schedule Of Callable Long-term Debt [Line Items]
Callable long-term debt, not subject to make-whole provisions	0
Callable long-term debt, subject to make-whole provisions	6,417
SoCalGas
Schedule Of Callable Long-term Debt [Line Items]
Callable long-term debt, not subject to make-whole provisions	304
Callable long-term debt, subject to make-whole provisions	4,450
Other Sempra
Schedule Of Callable Long-term Debt [Line Items]
Callable long-term debt, not subject to make-whole provisions	2,299
Callable long-term debt, subject to make-whole provisions	$ 6,470