REGULATORY MATTERS - COST OF CAPITAL & FERC (Details) - California Public Utilities Commission - USD ($)	1 Months Ended		12 Months Ended		36 Months Ended
	Apr. 30, 2022	Feb. 28, 2022	Sep. 30, 2021	Dec. 31, 2019	Dec. 31, 2022	Jan. 01, 2022
Public Utilities, General Disclosures [Line Items]
Variable rate (as a percent)				1.00%
San Diego Gas and Electric Company
Public Utilities, General Disclosures [Line Items]
CCM benchmark rate (as a percent)				4.498%
Percentage below CCM benchmark rate			1.17%
Authorized ROE (as a percent)				10.20%		9.62%
San Diego Gas and Electric Company | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Authorized weighting (as a percent)	100.00%
Weighted return on rate base (as a percent)	7.48%
San Diego Gas and Electric Company | Forecast
Public Utilities, General Disclosures [Line Items]
Authorized weighting (as a percent)					100.00%
Weighted return on rate base (as a percent)					7.55%
San Diego Gas and Electric Company | Authorized Weighting | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	46.00%
San Diego Gas and Electric Company | Authorized Weighting | Common Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	54.00%
San Diego Gas and Electric Company | Authorized Weighting | Preferred Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	0.00%
San Diego Gas and Electric Company | Authorized Weighting | Forecast
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)					45.25%
San Diego Gas and Electric Company | Authorized Weighting | Forecast | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					52.00%
San Diego Gas and Electric Company | Authorized Weighting | Forecast | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					2.75%
San Diego Gas and Electric Company | Return on Rate Base | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	3.87%
San Diego Gas and Electric Company | Return on Rate Base | Common Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	10.55%
San Diego Gas and Electric Company | Return on Rate Base | Preferred Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	0.00%
San Diego Gas and Electric Company | Return on Rate Base | Forecast
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)					4.59%
San Diego Gas and Electric Company | Return on Rate Base | Forecast | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					10.20%
San Diego Gas and Electric Company | Return on Rate Base | Forecast | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					6.22%
San Diego Gas and Electric Company | Weighted Return on Rate Base | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	1.78%
San Diego Gas and Electric Company | Weighted Return on Rate Base | Common Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	5.70%
San Diego Gas and Electric Company | Weighted Return on Rate Base | Preferred Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	0.00%
San Diego Gas and Electric Company | Weighted Return on Rate Base | Forecast
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)					2.08%
San Diego Gas and Electric Company | Weighted Return on Rate Base | Forecast | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					5.30%
San Diego Gas and Electric Company | Weighted Return on Rate Base | Forecast | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					0.17%
Southern California Gas Company
Public Utilities, General Disclosures [Line Items]
CCM benchmark rate (as a percent)				4.029%
Southern California Gas Company | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Authorized weighting (as a percent)	100.00%
Weighted return on rate base (as a percent)	7.60%
Southern California Gas Company | Forecast
Public Utilities, General Disclosures [Line Items]
Authorized weighting (as a percent)					100.00%
Weighted return on rate base (as a percent)					7.30%
Southern California Gas Company | Energy Efficiency Program Inquiry
Public Utilities, General Disclosures [Line Items]
Equity losses on investment		$ 10,000,000
Southern California Gas Company | Energy Efficiency and Advocacy
Public Utilities, General Disclosures [Line Items]
Equity losses on investment		$ 150,000
Southern California Gas Company | Authorized Weighting | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	45.60%
Southern California Gas Company | Authorized Weighting | Common Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	54.00%
Southern California Gas Company | Authorized Weighting | Preferred Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	0.40%
Southern California Gas Company | Authorized Weighting | Forecast
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)					45.60%
Southern California Gas Company | Authorized Weighting | Forecast | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					52.00%
Southern California Gas Company | Authorized Weighting | Forecast | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					2.40%
Southern California Gas Company | Return on Rate Base | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	3.89%
Southern California Gas Company | Return on Rate Base | Common Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	10.75%
Southern California Gas Company | Return on Rate Base | Preferred Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	6.00%
Southern California Gas Company | Return on Rate Base | Forecast
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)					4.23%
Southern California Gas Company | Return on Rate Base | Forecast | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					10.05%
Southern California Gas Company | Return on Rate Base | Forecast | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					6.00%
Southern California Gas Company | Weighted Return on Rate Base | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	1.77%
Southern California Gas Company | Weighted Return on Rate Base | Common Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	5.81%
Southern California Gas Company | Weighted Return on Rate Base | Preferred Equity | Subsequent Event
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	0.02%
Southern California Gas Company | Weighted Return on Rate Base | Forecast
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)					1.93%
Southern California Gas Company | Weighted Return on Rate Base | Forecast | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					5.23%
Southern California Gas Company | Weighted Return on Rate Base | Forecast | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					0.14%