CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
REVENUES
Utilities operating revenue	$ 2,190,000,000	$ 2,197,000,000	[1]	$ 4,788,000,000	$ 4,895,000,000	[1]
Energy-related businesses	374,000,000	336,000,000	[1]	738,000,000	669,000,000	[1]
Total revenues	2,564,000,000	2,533,000,000	[1]	5,526,000,000	5,564,000,000	[1]
Operating expenses
Operation and maintenance	(783,000,000)	(748,000,000)	[1]	(1,564,000,000)	(1,467,000,000)	[1]
Depreciation and amortization	(392,000,000)	(368,000,000)	[1]	(778,000,000)	(728,000,000)	[1],[2]
Franchise fees and other taxes	(104,000,000)	(101,000,000)	[1]	(221,000,000)	(211,000,000)	[1]
Operating expenses
Impairment losses	(1,300,000,000)	(71,000,000)	[1]	(1,300,000,000)	(71,000,000)	[1],[2]
Other (expense) income, net	(54,000,000)	108,000,000	[1]	99,000,000	282,000,000	[1]
Interest income	21,000,000	8,000,000	[1]	54,000,000	14,000,000	[1]
Interest expense	(237,000,000)	(159,000,000)	[1]	(453,000,000)	(328,000,000)	[1]
(Loss) income before income taxes and equity (losses) earnings of unconsolidated subsidiaries	(1,109,000,000)	397,000,000	[1]	(442,000,000)	1,149,000,000	[1]
Income tax benefit (expense)	583,000,000	(167,000,000)	[1]	294,000,000	(462,000,000)	[1]
Equity (losses) earnings	(4,000,000)	18,000,000	[1]	(24,000,000)	13,000,000	[1]
Net (loss) income	(530,000,000)	248,000,000	[1]	(172,000,000)	700,000,000	[1],[2]
Preferred dividend requirements				53,000,000
(Earnings) losses attributable to noncontrolling interest	(5,000,000)	12,000,000	[1]	12,000,000	1,000,000	[1]
Mandatory convertible preferred stock dividends	(25,000,000)	0	[1]	(53,000,000)	0	[1]
Preferred dividends of subsidiary	(1,000,000)	(1,000,000)	[1]	(1,000,000)	(1,000,000)	[1]
(Losses) earnings attributable to common shares	$ (561,000,000)	$ 259,000,000	[1]	$ (214,000,000)	$ 700,000,000	[1]
Basic (losses) earnings per common share	$ (2.11)	$ 1.03	[1]	$ (0.82)	$ 2.79	[1]
Weighted-average number of shares outstanding, basic	265,837	251,447	[1]	261,906	251,290	[1]
Diluted (losses) earnings per common share	$ (2.11)	$ 1.03	[1]	$ (0.82)	$ 2.77	[1]
Weighted-average number of shares outstanding, diluted (thousands)	265,837	252,822	[1]	261,906	252,609	[1]
Dividends declared per share of common stock (in dollars per share)	$ 0.89	$ 0.83	[1]	$ 1.79	$ 1.65	[1]
Cost of electric fuel and purchased power [Member]
Operating expenses
Operating expenses	$ (557,000,000)	$ (553,000,000)	[1]	$ (1,103,000,000)	$ (1,080,000,000)	[1]
Cost of natural gas [Member]
Operating expenses
Operating expenses	(179,000,000)	(228,000,000)	[1]	(527,000,000)	(713,000,000)	[1]
Cost of natural gas, electric fuel and purchased power [Member]
Operating expenses
Operating expenses	(69,000,000)	(62,000,000)	[1]	(138,000,000)	(129,000,000)	[1]
Other cost of sales [Member]
Operating expenses
Operating expenses	(19,000,000)	(38,000,000)	[1]	(37,000,000)	(16,000,000)	[1]
San Diego Gas and Electric Company [Member]
REVENUES
Electric	938,000,000	946,000,000	[1]	1,822,000,000	1,821,000,000	[1]
Natural gas	113,000,000	112,000,000	[1]	284,000,000	294,000,000	[1]
Utilities operating revenue	1,051,000,000	1,058,000,000	[1]	2,106,000,000	2,115,000,000	[1]
Operating expenses
Cost of electric fuel and purchased power	323,000,000	316,000,000	[1]	597,000,000	577,000,000	[1]
Cost of natural gas	30,000,000	38,000,000	[1]	80,000,000	103,000,000	[1]
Operation and maintenance	251,000,000	241,000,000	[1]	499,000,000	472,000,000	[1]
Depreciation and amortization	169,000,000	166,000,000	[2]	335,000,000	329,000,000	[1]
Franchise fees and other taxes	63,000,000	60,000,000	[1]	132,000,000	123,000,000	[1]
Total operating expenses	836,000,000	821,000,000	[1]	1,643,000,000	1,604,000,000	[1]
Operating income	215,000,000	237,000,000	[1]	463,000,000	511,000,000	[1]
Other (expense) income, net	25,000,000	19,000,000	[1]	53,000,000	41,000,000	[1]
Interest income	1,000,000	0	[1]	2,000,000	0	[1]
Interest expense	(53,000,000)	(49,000,000)	[1]	(105,000,000)	(98,000,000)	[1]
(Loss) income before income taxes and equity (losses) earnings of unconsolidated subsidiaries	188,000,000	207,000,000	[1]	413,000,000	454,000,000	[1]
Income tax benefit (expense)	(42,000,000)	(54,000,000)	[1]	(98,000,000)	(144,000,000)	[1]
Net (loss) income	146,000,000	153,000,000	[1]	315,000,000	310,000,000	[1]
(Earnings) losses attributable to noncontrolling interest	0	(4,000,000)	[1]	1,000,000	(6,000,000)	[1]
(Losses) earnings attributable to common shares	146,000,000	149,000,000	[1]	316,000,000	304,000,000	[1]
Southern California Gas Company [Member]
Operating expenses
Cost of natural gas	150,000,000	179,000,000	[1]	439,000,000	587,000,000	[1]
Operation and maintenance	382,000,000	351,000,000	[1]	766,000,000	707,000,000	[1]
Depreciation and amortization	138,000,000	126,000,000	[1]	273,000,000	252,000,000	[1]
Franchise fees and other taxes	33,000,000	34,000,000	[1]	73,000,000	73,000,000	[1]
Total operating expenses	703,000,000	690,000,000	[1]	1,551,000,000	1,619,000,000	[1]
Operating income	69,000,000	80,000,000	[1]	347,000,000	392,000,000	[1]
Other (expense) income, net	13,000,000	24,000,000	[1]	46,000,000	38,000,000	[1]
Interest income	1,000,000	0		1,000,000	0
Interest expense	(26,000,000)	(26,000,000)	[1]	(53,000,000)	(51,000,000)	[1]
(Loss) income before income taxes and equity (losses) earnings of unconsolidated subsidiaries	57,000,000	78,000,000	[1]	341,000,000	379,000,000	[1]
Income tax benefit (expense)	(23,000,000)	(19,000,000)	[1]	(82,000,000)	(117,000,000)	[1]
Net (loss) income	34,000,000	59,000,000	[1]	259,000,000	262,000,000	[1]
Preferred dividend requirements	1,000,000	1,000,000	[1]	1,000,000	1,000,000	[1]
(Losses) earnings attributable to common shares	33,000,000	58,000,000	[1]	258,000,000	261,000,000	[1]
Southern California Gas Company [Member] | Public Utilities [Member]
REVENUES
Natural gas	$ 772,000,000	$ 770,000,000	[1]	$ 1,898,000,000	$ 2,011,000,000	[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 2016-18, which we discuss in Note 2.