CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Dividends declared per share of common stock (in dollars per share)	$ 1.10	$ 1.05
San Diego Gas and Electric Company [Member]
Dividends declared per share of common stock (in dollars per share)		1.72
Southern California Gas Company [Member]
Dividends declared per share of preferred stock (in dollars per share)	0.38	0.38
Dividends declared per share of common stock (in dollars per share)	0.55
Series A Preferred Stock [Member]
Dividends declared per share of preferred stock (in dollars per share)		1.50
Series B Preferred Stock [Member]
Dividends declared per share of preferred stock (in dollars per share)	1.69	$ 1.69
Series C Preferred Stock [Member]
Dividends declared per share of preferred stock (in dollars per share)	$ 12.19