CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
REVENUES
Utilities	$ 2,370	$ 2,332	$ 4,855	$ 4,666
Energy-related businesses	308	319	618	635
Total revenues	2,678	2,651	5,473	5,301
Utilities [Abstract]
Cost of natural gas	(395)	(365)	(1,015)	(921)
Cost of electric fuel and purchased power	(571)	(477)	(1,081)	(924)
Energy-related businesses [Abstract]
Cost of natural gas, electric fuel and purchased power	(126)	(94)	(264)	(205)
Other cost of sales	(42)	(49)	(80)	(97)
Operation and maintenance	(729)	(740)	(1,405)	(1,464)
Depreciation and amortization	(288)	(247)	(574)	(542)
Plant closure adjustment (loss)	0	(200)	13	(200)
Franchise fees and other taxes	(92)	(81)	(197)	(187)
Gain on sale of equity interest and assets	2	0	29	74
Equity (losses) earnings before income tax
Equity (losses) earnings, other	23	8	40	18
Other income (expense), net	49	26	89	63
Interest income	5	4	9	10
Interest expense	(138)	(138)	(274)	(276)
Income before income taxes and equity earnings of certain unconsolidated subsidiaries	376	298	763	650
Income tax (expense) benefit	(93)	(32)	(220)	(210)
Equity earnings, net of income tax	9	1	15	5
Net income	292	267	558	445
Losses (earnings) attributable to noncontrolling interests	(22)	(21)	(41)	(19)
Preferred dividends of subsidiaries	(1)	(1)	(1)	(3)
Earnings	269	245	516	423
Basic earnings per common share:
Basic earnings per common share	$ 1.10	$ 1.00	$ 2.10	$ 1.74
Basic earnings per common share, weighted-average number of shares outstanding (thousands)	245,688	243,603	245,484	243,449
Diluted earnings per common share:
Diluted earnings per common share	$ 1.08	$ 0.98	$ 2.07	$ 1.70
Diluted earnings per common share, weighted-average number of shares outstanding (thousands)	250,061	248,515	249,816	248,279
Dividends declared per share of common stock	$ 0.66	$ 0.63	$ 1.32	$ 1.26
San Diego Gas and Electric Company and Subsidiary [Member]
Utility operating revenues
Electric	948	943	1,759	1,715
Natural gas	115	121	291	288
Total utility operating revenues	1,063	1,064	2,050	2,003
Utility operating expenses
Utility cost of natural gas	51	45	126	121
Utility cost of electric fuel and purchased power	329	252	595	461
Utility operation and maintenance	256	289	508	586
Utility depreciation and amortization	131	107	261	241
Utility franchise fees and other taxes	54	46	110	101
Utility plant closure (adjustment) loss	0	200	(13)	200
Total utility operating expenses	821	939	1,587	1,710
Utility operating income	242	125	463	293
Equity (losses) earnings before income tax
Other income (expense), net	7	9	20	20
Interest income	0	0	0	1
Interest expense	(51)	(49)	(101)	(97)
Income before income taxes and equity earnings of certain unconsolidated subsidiaries	198	85	382	217
Income tax (expense) benefit	(69)	(12)	(152)	(63)
Net income	129	73	230	154
Losses (earnings) attributable to noncontrolling interests	(6)	(7)	(8)	4
Earnings	123	66	222	158
Preferred dividend requirements	0	(1)	0	(2)
Earnings attributable to common shares	123	65	222	156
Southern California Gas Company [Member]
Utility operating revenues
Total utility operating revenues	917	904	2,002	1,887
Utility operating expenses
Utility cost of natural gas	321	303	829	757
Utility operation and maintenance	337	316	642	622
Utility depreciation and amortization	107	80	212	180
Utility franchise fees and other taxes	30	26	68	66
Total utility operating expenses	795	725	1,751	1,625
Utility operating income	122	179	251	262
Equity (losses) earnings before income tax
Other income (expense), net	3	3	7	7
Interest expense	(16)	(18)	(33)	(35)
Income before income taxes and equity earnings of certain unconsolidated subsidiaries	109	164	225	234
Income tax (expense) benefit	(28)	(45)	(66)	(69)
Net income	81	119	159	165
Earnings	81	119	159	165
Preferred dividend requirements	(1)	(1)	(1)	(1)
Earnings attributable to common shares	$ 80	$ 118	$ 158	$ 164