CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017		Sep. 30, 2018	Sep. 30, 2017
REVENUES
Utilities operating revenue	$ 2,460,000,000	$ 2,277,000,000	[1]	$ 7,248,000,000	$ 7,172,000,000	[1]
Energy-related businesses	480,000,000	402,000,000	[1]	1,218,000,000	1,071,000,000	[1]
Total revenues	2,940,000,000	2,679,000,000	[1]	8,466,000,000	8,243,000,000	[1]
Operating expenses
Operation and maintenance	(819,000,000)	(759,000,000)	[1]	(2,383,000,000)	(2,226,000,000)	[1]
Depreciation and amortization	(380,000,000)	(378,000,000)	[1]	(1,158,000,000)	(1,106,000,000)	[1],[2]
Franchise fees and other taxes	(131,000,000)	(114,000,000)	[1]	(352,000,000)	(325,000,000)	[1]
Write-off of wildfire regulatory asset	0	(351,000,000)	[1]	0	(351,000,000)	[1]
Operating expenses
Write-off of wildfire regulatory asset	0	351,000,000	[1]	0	351,000,000	[1]
Impairment losses	(4,000,000)	(1,000,000)	[1]	(1,304,000,000)	(72,000,000)	[1],[2]
Other income, net	97,000,000	40,000,000	[1]	196,000,000	322,000,000	[1]
Interest income	22,000,000	12,000,000	[1]	76,000,000	26,000,000	[1]
Interest expense	(232,000,000)	(165,000,000)	[1]	(685,000,000)	(493,000,000)	[1]
Income (loss) before income taxes and equity earnings of unconsolidated subsidiaries	427,000,000	5,000,000	[1]	(15,000,000)	1,154,000,000	[1]
Income tax benefit (expense)	(167,000,000)	84,000,000	[1]	127,000,000	(378,000,000)	[1]
Equity earnings	74,000,000	13,000,000	[1]	50,000,000	26,000,000	[1]
Net (loss) income	334,000,000	102,000,000	[1]	162,000,000	802,000,000	[1],[2]
Earnings attributable to noncontrolling interest	(24,000,000)	(45,000,000)	[1]	(12,000,000)	(44,000,000)	[1]
Mandatory convertible preferred stock dividends	(36,000,000)	0	[1]	(89,000,000)	0	[1]
Preferred dividends of subsidiary	0	0	[1]	(1,000,000)	(1,000,000)	[1]
Earnings attributable to common shares	$ 274,000,000	$ 57,000,000	[1]	$ 60,000,000	$ 757,000,000	[1]
Basic earnings per common share	$ 1.00	$ 0.23	[1]	$ 0.23	$ 3.01	[1]
Weighted-average number of shares outstanding, basic	273,944	251,692	[1]	265,963	251,425	[1]
Diluted earnings per common share	$ 0.99	$ 0.22	[1]	$ 0.22	$ 2.99	[1]
Weighted-average number of shares outstanding, diluted (thousands)	275,907	253,364	[1]	267,644	252,987	[1]
Cost of electric fuel and purchased power [Member]
Operating expenses
Operating expenses	$ (675,000,000)	$ (650,000,000)	[1]	$ (1,778,000,000)	$ (1,730,000,000)	[1]
Cost of natural gas [Member]
Operating expenses
Operating expenses	(255,000,000)	(190,000,000)	[1]	(782,000,000)	(903,000,000)	[1]
Cost of natural gas, electric fuel and purchased power [Member]
Operating expenses
Operating expenses	(119,000,000)	(97,000,000)	[1]	(257,000,000)	(226,000,000)	[1]
Other cost of sales [Member]
Operating expenses
Operating expenses	(17,000,000)	(21,000,000)	[1]	(54,000,000)	(5,000,000)	[1]
San Diego Gas and Electric Company [Member]
REVENUES
Electric	1,192,000,000	1,131,000,000	[1]	3,014,000,000	2,952,000,000	[1]
Natural gas	107,000,000	105,000,000	[1]	391,000,000	399,000,000	[1]
Utilities operating revenue	1,299,000,000	1,236,000,000	[1]	3,405,000,000	3,351,000,000	[1]
Operating expenses
Write-off of wildfire regulatory asset	0	(351,000,000)		0	(351,000,000)	[2]
Operating expenses
Cost of electric fuel and purchased power	448,000,000	417,000,000	[1]	1,045,000,000	994,000,000	[1]
Cost of natural gas	30,000,000	29,000,000	[1]	110,000,000	132,000,000	[1]
Operation and maintenance	262,000,000	253,000,000	[1]	761,000,000	725,000,000	[1]
Depreciation and amortization	174,000,000	170,000,000	[2]	509,000,000	499,000,000	[1]
Franchise fees and other taxes	85,000,000	74,000,000	[1]	217,000,000	197,000,000	[1]
Write-off of wildfire regulatory asset	0	351,000,000		0	351,000,000	[2]
Total operating expenses	999,000,000	1,294,000,000	[1]	2,642,000,000	2,898,000,000	[1]
Operating income (loss)	300,000,000	(58,000,000)	[1]	763,000,000	453,000,000	[1]
Other income, net	24,000,000	20,000,000	[1]	77,000,000	61,000,000	[1]
Interest income	1,000,000	0	[1]	3,000,000	0	[1]
Interest expense	(56,000,000)	(53,000,000)	[1]	(161,000,000)	(151,000,000)	[1]
Income (loss) before income taxes and equity earnings of unconsolidated subsidiaries	269,000,000	(91,000,000)	[1]	682,000,000	363,000,000	[1]
Income tax benefit (expense)	(53,000,000)	72,000,000	[1]	(151,000,000)	(72,000,000)	[1]
Net (loss) income	216,000,000	(19,000,000)	[1]	531,000,000	291,000,000	[1],[2]
Earnings attributable to noncontrolling interest	(11,000,000)	(9,000,000)	[1]	(10,000,000)	(15,000,000)	[1]
Earnings attributable to common shares	205,000,000	(28,000,000)	[1]	521,000,000	276,000,000	[1]
Southern California Gas Company [Member]
REVENUES
Utilities operating revenue	802,000,000	684,000,000	[1]	2,700,000,000	2,695,000,000	[1]
Operating expenses
Cost of natural gas	224,000,000	153,000,000	[1]	663,000,000	740,000,000	[1]
Operation and maintenance	394,000,000	360,000,000	[1]	1,160,000,000	1,067,000,000	[1]
Depreciation and amortization	141,000,000	132,000,000		414,000,000	384,000,000	[1]
Franchise fees and other taxes	38,000,000	34,000,000	[1]	111,000,000	107,000,000	[1]
Total operating expenses	797,000,000	679,000,000	[1]	2,348,000,000	2,298,000,000	[1]
Operating income (loss)	5,000,000	5,000,000	[1]	352,000,000	397,000,000	[1]
Other income, net	3,000,000	13,000,000	[1]	49,000,000	51,000,000	[1]
Interest income	0	1,000,000		1,000,000	1,000,000
Interest expense	(29,000,000)	(26,000,000)	[1]	(82,000,000)	(77,000,000)	[1]
Income (loss) before income taxes and equity earnings of unconsolidated subsidiaries	(21,000,000)	(7,000,000)	[1]	320,000,000	372,000,000	[1]
Income tax benefit (expense)	7,000,000	14,000,000	[1]	(75,000,000)	(103,000,000)	[1]
Net (loss) income	(14,000,000)	7,000,000	[1]	245,000,000	269,000,000	[1]
Preferred dividend requirements	0	0	[1]	1,000,000	1,000,000	[1]
Earnings attributable to common shares	$ (14,000,000)	$ 7,000,000	[1]	$ 244,000,000	$ 268,000,000	[1]

[1] As adjusted for the retrospective adoption of ASU 2017-07, which we discuss in Note 2, and a reclassification to conform to current year presentation, which we discuss in Note 1.

[2] As adjusted for the retrospective adoption of ASU 2016-15 and ASU 2016-18, which we discuss in Note 2.