REGULATORY MATTERS - BILLING PRACTICES (Details) - California Public Utilities Commission - USD ($)		1 Months Ended	12 Months Ended
	Feb. 03, 2022	Feb. 28, 2022	Dec. 31, 2020
Energy Efficiency Program Inquiry
Public Utilities, General Disclosures [Line Items]
Energy Efficiency Program Inquiry fines that reduce revenue			$ 51,000,000
Litigation fines			6,000,000
Litigation fines, after tax			44,000,000
SoCalGas | Energy Efficiency and Advocacy | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Energy Efficiency Program Inquiry fines that reduce revenue	$ 10,000,000	$ 150,000
San Diego Gas and Electric Company [Member] | Energy Efficiency Program Inquiry
Public Utilities, General Disclosures [Line Items]
Energy Efficiency Program Inquiry fines that reduce revenue			51,000,000
Litigation fines			6,000,000
Litigation fines, after tax			$ 44,000,000