CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
REVENUES
Utilities operating revenue	$ 2,398	$ 2,102	$ 6,808	$ 6,112
Energy-related businesses	360	463	1,078	1,164
Total revenues	2,758	2,565	7,886	7,276
Operating expenses
Operation and maintenance	(845)	(792)	(2,515)	(2,275)
Depreciation and amortization	(402)	(366)	(1,174)	(1,115)
Franchise fees and other taxes	(127)	(131)	(369)	(352)
Operating expenses
Impairment losses	(43)	(4)	(43)	(1,304)
(Loss) gain on sale of assets	(3)	0	63	0
Other (expense) income, net	(7)	96	103	192
Interest income	22	19	64	66
Interest expense	(279)	(222)	(797)	(656)
Income (loss) from continuing operations before income taxes and equity earnings	448	345	1,235	(245)
Income tax (expense) benefit	(61)	(139)	(150)	221
Equity earnings	266	74	485	49
Income from continuing operations, net of income tax	653	280	1,570	25
Income from discontinued operations, net of income tax	256	54	292	137
Net income	909	334	1,862	162
Earnings attributable to noncontrolling interests	(60)	(24)	(146)	(12)
Mandatory convertible preferred stock dividends	(36)	(36)	(107)	(89)
Preferred dividends of subsidiary	0	0	(1)	(1)
Earnings attributable to common shares	$ 813	$ 274	$ 1,608	$ 60
Basic earnings (losses) per common share:
Earnings (losses) from continuing operations attributable to common shares (in usd per share)	$ 2.04	$ 0.83	$ 4.86	$ (0.21)
Earnings from discontinued operations attributable to common shares (in usd per share)	0.89	0.17	0.97	0.44
Earnings attributable to common shares (in usd per share)	$ 2.93	$ 1.00	$ 5.83	$ 0.23
Weighted-average common shares outstanding	277,360	273,944	275,684	265,963
Diluted earnings (losses) per common share:
Earnings (losses) from continuing operations attributable to common shares (in usd per share)	$ 2.00	$ 0.82	$ 4.79	$ (0.21)
Earnings from discontinued operations attributable to common shares (in usd per share)	0.84	0.17	0.95	0.44
Earnings from continuing operations attributable to common shares (n usd per share)	$ 2.84	$ 0.99	$ 5.74	$ 0.23
Weighted-average common share outstanding, diluted	295,789	275,907	279,809	265,963
Natural gas [Member]
Operating expenses
Operating expenses	$ (122)	$ (255)	$ (789)	$ (782)
Electric fuel and purchased power [Member]
Operating expenses
Operating expenses	(410)	(446)	(929)	(1,037)
Energy-related businesses [Member]
Operating expenses
Operating expenses	(94)	(119)	(265)	(258)
San Diego Gas and Electric Company [Member]
REVENUES
Electric	1,271	1,192	3,184	3,014
Natural gas	156	107	482	391
Utilities operating revenue	1,427	1,299	3,666	3,405
Operating expenses
Cost of electric fuel and purchased power	411	448	934	1,045
Cost of natural gas	23	30	136	110
Operation and maintenance	295	262	857	761
Depreciation and amortization	196	174	571	509
Franchise fees and other taxes	79	85	220	217
Total operating expenses	1,004	999	2,718	2,642
Operating income	423	300	948	763
Other (expense) income, net	19	24	60	77
Interest income	1	1	3	3
Interest expense	(106)	(56)	(311)	(161)
Income (loss) from continuing operations before income taxes and equity earnings	337	269	700	682
Income tax (expense) benefit	(71)	(53)	(111)	(151)
Net income	266	216	589	531
Earnings attributable to noncontrolling interests	(3)	(11)	(7)	(10)
Earnings attributable to common shares	263	205	582	521
Southern California Gas Company [Member]
REVENUES
Utilities operating revenue	975	802	3,142	2,700
Operating expenses
Cost of natural gas	101	224	660	663
Operation and maintenance	427	394	1,291	1,160
Depreciation and amortization	154	141	449	414
Franchise fees and other taxes	43	38	132	111
Impairment losses	(37)	0	(37)	0
Total operating expenses	762	797	2,569	2,348
Operating income	213	5	573	352
Other (expense) income, net	1	3	18	49
Interest income	0	0	1	1
Interest expense	(36)	(29)	(104)	(82)
Income (loss) from continuing operations before income taxes and equity earnings	178	(21)	488	320
Income tax (expense) benefit	(35)	7	(50)	(75)
Net income	143	(14)	438	245
Preferred dividends	0	0	(1)	(1)
Earnings attributable to common shares	$ 143	$ (14)	$ 437	$ 244