EMPLOYEE BENEFIT PLANS - SAVINGS PLANS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Savings Plan [Line Items]
Employer contributions to defined benefit plan	$ 52	$ 47	$ 44
Market value of employer stock held by plan	1,000	1,100	1,300
San Diego Gas and Electric Company [Member]
Savings Plan [Line Items]
Employer contributions to defined benefit plan	18	16	15
SoCalGas
Savings Plan [Line Items]
Employer contributions to defined benefit plan	$ 28	$ 25	$ 24