CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Preferred stock	Preferred stock Cumulative Effect, Period of Adoption, Adjusted Balance	Common stock	Common stock Cumulative Effect, Period of Adoption, Adjusted Balance	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Retained earnings Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated other comprehensive income (loss)	Accumulated other comprehensive income (loss) Cumulative Effect, Period of Adoption, Adjustment	Accumulated other comprehensive income (loss) Cumulative Effect, Period of Adoption, Adjusted Balance	Sempra Energy shareholders' equity	Sempra Energy shareholders' equity Cumulative Effect, Period of Adoption, Adjustment	Sempra Energy shareholders' equity Cumulative Effect, Period of Adoption, Adjusted Balance	Non- controlling interests	Non- controlling interests Cumulative Effect, Period of Adoption, Adjustment	Non- controlling interests Cumulative Effect, Period of Adoption, Adjusted Balance	Preferred Class A	Preferred Class A Preferred stock	Preferred Class A Common stock	Preferred Class A Retained earnings	Preferred Class A Sempra Energy shareholders' equity	Preferred Class B	Preferred Class B Preferred stock	Preferred Class B Common stock	Preferred Class B Retained earnings	Preferred Class B Sempra Energy shareholders' equity	Series C Preferred Stock	Series C Preferred Stock Preferred stock	Series C Preferred Stock Retained earnings	Series C Preferred Stock Sempra Energy shareholders' equity
Beginning Balance at Dec. 31, 2018	$ 19,248		$ 19,263	$ 2,258	$ 2,258	$ 5,540	$ 5,540	$ 10,104		$ 10,161	$ (764)		$ (806)	$ 17,138		$ 17,153	$ 2,110		$ 2,110
Beginning Balance (Accounting Standards Update 2016-02) at Dec. 31, 2018		$ 17							$ 17						$ 17
Beginning Balance (Accounting Standards Update 2018-02) at Dec. 31, 2018		(2)							40			$ (42)			(2)
Accounting Standards Update [Extensible List] | Accounting Standards Update 2016-13 [Member]	Accounting Standards Update 2016-13 [Member]
Net income	$ 2,362							2,198						2,198			164
Other comprehensive income	(140)										(133)			(133)			(7)
Share-based compensation expense	75					75								75
Preferred stock dividends declared																				$ (103)			$ (103)	$ (103)	$ (39)			$ (39)	$ (39)
Common stock dividends declared	(1,086)							(1,086)						(1,086)
Preferred dividends of subsidiary	(1)							(1)						(1)
Issuances of stock	1,885					1,885								1,885
Repurchases of common stock	(26)					(26)								(26)
Contributions	175																175
Distributions	(98)					5								5			(103)
Purchases	(30)					(3)								(3)			(27)
Sale	5					4								4			1
Acquisition	3																3
Deconsolidations	(440)																(440)
Ending balance at Dec. 31, 2019	21,805		$ 21,796	2,258	$ 2,258	7,480	$ 7,480	11,130		$ 11,123	(939)		$ (939)	19,929		$ 19,922	1,876		$ 1,874
Ending balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2019		$ (9)							$ (7)						$ (7)			$ (2)
Net income	4,105							3,933						3,933			172
Other comprehensive income	422										446			446			(24)
Share-based compensation expense	71					71								71
Preferred stock dividends declared																				(104)			$ (104)	(104)	(39)			(39)	(39)	$ (25)		$ (25)	$ (25)
Common stock dividends declared	(1,214)							(1,214)						(1,214)
Preferred dividends of subsidiary	(1)							(1)						(1)
Issuances of stock	33					33								33																889	$ 889		889
Repurchases of common stock	(566)					(566)								(566)
Contributions	1																1
Distributions	(1)																(1)
Purchases	(248)					34					(7)			27			(275)
Sale	28					1								1			27
Acquisition	1																1
Equitization of long-term debt for deficit held by NCI	22																22
Deconsolidations	(236)																(236)
Ending balance at Dec. 31, 2020	24,934			3,147		7,053		13,673			(500)			23,373			1,561
Net income	1,463							1,318						1,318			145
Other comprehensive income	171										160			160			11
Share-based compensation expense	63					63								63
Preferred stock dividends declared																									(19)			$ (19)	(19)	$ (44)		$ (44)	$ (44)
Common stock dividends declared	(1,379)							(1,379)						(1,379)
Preferred dividends of subsidiary	(1)							(1)						(1)
Conversion of stock																				$ 0	$ (1,693)	$ 1,693		$ 0	$ 0	$ (565)	$ 565		$ 0
Issuances of stock	5					5								5
Repurchases of common stock	(339)					(339)								(339)
Contributions	4																4
Purchases	(152)					1,459					(44)			1,415			(1,567)
Sale	2,712					1,363					66			1,429			1,283
Deconsolidations	1																1
Ending balance at Dec. 31, 2021	$ 27,419			$ 889		$ 11,862		$ 13,548			$ (318)			$ 25,981			$ 1,438