CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
REVENUES
Utilities operating revenue	$ 2,233	$ 1,895	$ 4,898	$ 4,410
Energy-related businesses	293	335	657	718
Total revenues	2,526	2,230	5,555	5,128
Operating expenses
Operation and maintenance	(898)	(838)	(1,849)	(1,670)
Depreciation and amortization	(412)	(389)	(824)	(772)
Franchise fees and other taxes	(121)	(112)	(258)	(242)
Gain on sale of assets	0	66	0	66
Operating expenses
Other income (expense), net	62	28	(192)	110
Interest income	22	21	49	42
Interest expense	(274)	(258)	(554)	(518)
Income from continuing operations before income taxes and equity earnings	463	286	860	787
Income tax (expense) benefit	(168)	(47)	39	(89)
Equity earnings	233	118	496	219
Income from continuing operations, net of income tax	528	357	1,395	917
Income from discontinued operations, net of income tax	1,777	78	1,857	36
Net income	2,305	435	3,252	953
Earnings attributable to noncontrolling interests	(28)	(45)	(179)	(86)
Preferred dividends	(37)	(35)	(73)	(71)
Preferred dividends of subsidiary	(1)	(1)	(1)	(1)
Earnings attributable to common shares	$ 2,239	$ 354	$ 2,999	$ 795
Basic EPS:
Earnings from continuing operations	$ 1.58	$ 1.03	$ 3.93	$ 2.82
Earnings from discontinued operations	6.06	0.26	6.31	0.07
Earnings attributable to common shares (in usd per share)	$ 7.64	$ 1.29	$ 10.24	$ 2.89
Weighted-average common shares outstanding	293,060	274,987	292,925	274,831
Diluted EPS:
Earnings from continuing operations	$ 1.58	$ 1.01	$ 3.91	$ 2.78
Earnings from discontinued operations	6.03	0.25	6.00	0.07
Earnings from continuing operations attributable to common shares (in usd per share)	$ 7.61	$ 1.26	$ 9.91	$ 2.85
Weighted-average common share outstanding, diluted	294,155	279,619	307,962	278,424
Natural gas [Member]
Operating expenses
Operating expenses	$ (131)	$ (136)	$ (468)	$ (667)
Electric fuel and purchased power [Member]
Operating expenses
Operating expenses	(260)	(263)	(489)	(519)
Energy-related businesses [Member]
Operating expenses
Operating expenses	(51)	(63)	(110)	(171)
San Diego Gas and Electric Company [Member]
REVENUES
Electric	1,090	973	2,140	1,913
Natural gas	145	121	364	326
Utilities operating revenue	1,235	1,094	2,504	2,239
Operating expenses
Cost of electric fuel and purchased power	260	265	491	523
Cost of natural gas	31	34	91	113
Operation and maintenance	326	276	636	562
Depreciation and amortization	197	189	398	375
Franchise fees and other taxes	73	67	151	141
Total operating expenses	887	831	1,767	1,714
Operating income	348	263	737	525
Other income (expense), net	18	19	49	41
Interest income	0	1	1	2
Interest expense	(103)	(102)	(204)	(205)
Income from continuing operations before income taxes and equity earnings	263	181	583	363
Income tax (expense) benefit	(70)	(35)	(128)	(40)
Net income	193	146	455	323
Earnings attributable to noncontrolling interests	0	(3)	0	(4)
Earnings attributable to common shares	193	143	455	319
Southern California Gas Company [Member]
REVENUES
Utilities operating revenue	1,010	806	2,405	2,167
Operating expenses
Cost of natural gas	106	104	384	559
Operation and maintenance	462	454	1,005	864
Depreciation and amortization	162	148	321	295
Franchise fees and other taxes	43	41	94	89
Total operating expenses	773	747	1,804	1,807
Operating income	237	59	601	360
Other income (expense), net	(2)	1	28	17
Interest income	1	1	2	1
Interest expense	(40)	(34)	(80)	(68)
Income from continuing operations before income taxes and equity earnings	196	27	551	310
Income tax (expense) benefit	(49)	4	(101)	(15)
Net income	147	31	450	295
Preferred dividends	(1)	(1)	(1)	(1)
Earnings attributable to common shares	$ 146	$ 30	$ 449	$ 294