CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
REVENUES
Utilities		$ 2,698	$ 2,442	[1]
Energy-related businesses		333	180	[1]
Total revenues		3,031	2,622	[1]
Utilities:
Cost of electric fuel and purchased power		(527)	(515)	[1]
Cost of natural gas		(485)	(311)	[1]
Energy-related businesses:
Cost of natural gas, electric fuel and purchased power		(67)	(56)	[1]
Other cost of sales		(22)	(35)	[1]
Operation and maintenance		(714)	(701)	[1]
Depreciation and amortization		(360)	(328)	[1],[2]
Franchise fees and other taxes		(110)	(111)	[1]
Equity earnings (losses), before income tax		3	(22)	[1]
Operating expenses
Other income, net		169	49	[1]
Interest income		6	6	[1]
Interest expense		(169)	(143)	[1]
Income before income taxes and equity (losses) earnings of certain unconsolidated subsidiaries		755	455	[1]
Income tax expense		(295)	(108)	[1]
Equity (losses) earnings, net of income tax		(8)	17	[1]
Net income		452	364	[1],[2]
Earnings attributable to noncontrolling interest		(11)	(11)	[1]
Earnings		$ 441	$ 353	[1]
Basic earnings per common share (in dollars per share)		$ 1.76	$ 1.41	[1]
Weighted-average number of shares outstanding, basic		251,131	249,734	[1]
Diluted earnings per common share (in dollars per share)		$ 1.75	$ 1.40	[1]
Weighted-average number of shares outstanding, diluted		252,246	251,487	[1]
Dividends declared per share of common stock (in dollars per share)		$ 0.82	$ 0.76	[1]
San Diego Gas and Electric Company [Member]
Operating revenues
Electric		$ 875	$ 843	[1]
Natural gas		182	148	[1]
Total operating revenues		1,057	991	[1]
Operating expenses
Cost of electric fuel and purchased power		261	248	[1]
Cost of natural gas		65	39	[1]
Operation and maintenance		227	246	[1]
Depreciation and amortization		163	159	[1],[2]
Franchise fees and other taxes		63	63	[1]
Total operating expenses		779	755	[1]
Operating income		278	236	[1]
Other income, net		18	14	[1]
Interest expense		(49)	(48)	[1]
Income before income taxes and equity (losses) earnings of certain unconsolidated subsidiaries		247	202	[1]
Income tax expense		(90)	(65)	[1]
Net income		157	137	[1],[2]
Earnings attributable to noncontrolling interest		(2)	(1)	[1]
Net income/Earnings attributable to common shares		155	136	[1]
Southern California Gas Company [Member]
Operating revenues
Total operating revenues		1,241	1,033	[1]
Operating expenses
Cost of natural gas		408	253	[1]
Operation and maintenance		353	327	[1]
Depreciation and amortization		126	122	[1],[2]
Franchise fees and other taxes		39	37	[1]
Total operating expenses		926	739	[1]
Operating income		315	294	[1]
Other income, net		11	10	[1]
Interest expense		(25)	(22)	[1]
Income before income taxes and equity (losses) earnings of certain unconsolidated subsidiaries		301	282	[1]
Income tax expense		(98)	(83)	[1]
Net income/Earnings attributable to common shares	[1]	$ 203	$ 199	[2]

[1] As adjusted for the adoption of ASU 2016-09 as of January 1, 2016.

[2] As adjusted for the adoption of ASU 2016-09 as of January 1, 2016.