CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 1,061	$ 475	[1]
Restricted cash	28	46	[1]
Trade accounts receivable	982	1,146	[1]
Other accounts and notes receivable	194	153	[1]
Inventories	463	408	[1]
Income taxes receivable	132	56	[1]
Deferred income taxes, net current assets	119	148	[1]
Regulatory balancing accounts, undercollected	346	395	[1]
Regulatory assets	100	62	[1]
Fixed-price contracts and other derivatives, current assets	76	95	[1]
U.S. Treasury grants receivable	0	258	[1]
Assets Held For Sale Current	0	296	[1]
Other current assets	211	157	[1]
Total current assets	3,712	3,695	[1]
Investments And Other Assets [Abstract]
Restricted cash, noncurrent	21	22	[1]
Regulatory assets arising from pension and other postretirement benefit obligations	1,173	1,151	[1]
Regulatory assets arising from wildfire litigation costs	339	364	[1]
Other regulatory assets	1,947	1,227	[1]
Nuclear decommissioning trusts	981	908	[1]
Other investments	1,564	1,516	[1]
Goodwill	1,045	1,111	[1]
Other intangible assets	428	436	[1]
Sundry	928	878	[1]
Total investments and other assets	8,426	7,613	[1]
Property, plant and equipment:
Property, plant and equipment	33,573	33,528	[1]
Less accumulated depreciation and amortization	(8,810)	(8,337)	[1]
Property, plant and equipment, net	24,763	25,191	[1]
Total assets	36,901	36,499	[1]
Current liabilities:
Short-term debt	522	546	[1]
Accounts payable - trade	859	976	[1]
Accounts payable - other	131	134	[1]
Dividends and interest payable	314	266	[1]
Accrued compensation and benefits	286	337	[1]
Regulatory balancing accounts, overcollected	82	141	[1]
Current portion of long-term debt	1,441	725	[1]
Fixed-price contracts and other derivatives, current liabilities	64	77	[1]
Customer deposits	155	143	[1]
Reserve for wildfire litigation (Note 10)	127	305	[1]
Other current liabilities	549	608	[1]
Total current liabilities	4,530	4,258	[1]
Long-term debt	10,478	11,621	[1]
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction	145	144	[1]
Pension and other postretirement benefit obligations, net of plan assets	1,472	1,456	[1]
Deferred income taxes, net noncurrent liabilities	2,543	2,100	[1]
Deferred investment tax credits	43	46	[1]
Regulatory liabilities arising from removal obligations	2,541	2,720	[1]
Asset retirement obligations	2,111	2,033	[1]
Fixed-price contracts and other derivatives, noncurrent liabilities	239	252	[1]
Deferred credits and other	1,045	1,107	[1]
Total deferred credits and other liabilities	10,139	9,858	[1]
Contingently redeemable preferred stock of subsidiary	0	79	[1]
Equity:
Preferred stock	0	0	[1]
Common stock	2,424	2,217	[1]
Retained earnings	8,700	8,441	[1]
Accumulated other comprehensive income (loss)	(215)	(376)	[1]
Total shareholders' equity	10,909	10,282	[1]
Preferred stock of subsidiaries	20	20	[1]
Other noncontrolling interests	825	381	[1]
Total equity	11,754	10,683	[1]
Total liabilities and equity	36,901	36,499	[1]
San Diego Gas and Electric Company and Subsidiary [Member]
Current assets:
Cash and cash equivalents	167	87	[1]
Restricted cash	9	10	[1]
Trade accounts receivable	335	252	[1]
Other accounts and notes receivable	36	21	[1]
Inventories	78	82	[1]
Due from unconsolidated affiliates	1	39	[1]
Income taxes receivable	0	35	[1]
Deferred income taxes, net current assets	53	0	[1]
Regulatory balancing accounts, net	346	395	[1]
Regulatory assets arising from fixed-price contracts and other derivatives - current	40	39	[1]
Regulatory assets	48	10	[1]
Fixed-price contracts and other derivatives, current assets	21	41	[1]
Other current assets	82	76	[1]
Total current assets	1,216	1,087	[1]
Investments And Other Assets [Abstract]
Restricted cash, noncurrent	21	22	[1]
Deferred taxes recoverable in rates	755	718	[1]
Regulatory assets arising from fixed-price contracts and other derivatives - noncurrent	90	110	[1]
Regulatory assets arising from pension and other postretirement benefit obligations	292	303	[1]
Regulatory assets arising from wildfire litigation costs	339	364	[1]
Other regulatory assets	834	252	[1]
Nuclear decommissioning trusts	981	908	[1]
Sundry	164	117	[1]
Total investments and other assets	3,476	2,794	[1]
Property, plant and equipment:
Property, plant and equipment	14,049	14,124	[1]
Less accumulated depreciation and amortization	(3,466)	(3,261)	[1]
Property, plant and equipment, net	10,583	10,863	[1]
Total assets	15,275	14,744	[1]
Current liabilities:
Accounts payable - trade	320	300	[1]
Due to unconsolidated affiliates	13	19	[1]
Income taxes payable	30	0	[1]
Deferred income taxes, net current liabilities	0	26	[1]
Dividends and interest payable	53	36	[1]
Accrued compensation and benefits	82	129	[1]
Current portion of long-term debt	45	16	[1]
Fixed-price contracts and other derivatives, current liabilities	45	56	[1]
Customer deposits	71	60	[1]
Construction deposits by large customers	8	51	[1]
Reserve for wildfire litigation (Note 10)	127	305	[1]
Preferred stock pending redemption	82	0	[1]
Other current liabilities	213	106	[1]
Total current liabilities	1,089	1,104	[1]
Long-term debt	4,527	4,292	[1]
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction	24	17	[1]
Pension and other postretirement benefit obligations, net of plan assets	328	340	[1]
Deferred income taxes, net noncurrent liabilities	1,872	1,636	[1]
Deferred investment tax credits	24	25	[1]
Regulatory liabilities arising from removal obligations	1,347	1,603	[1]
Asset retirement obligations	901	733	[1]
Fixed-price contracts and other derivatives, noncurrent liabilities	183	209	[1]
Deferred credits and other	392	408	[1]
Total deferred credits and other liabilities	5,071	4,971	[1]
Contingently redeemable preferred stock	0	79	[1]
Equity:
Common stock	1,338	1,338	[1]
Retained earnings	3,180	2,895	[1]
Accumulated other comprehensive income (loss)	(9)	(11)	[1]
Total shareholders' equity	4,509	4,222	[1]
Other noncontrolling interests	79	76	[1]
Total equity	4,588	4,298	[1]
Total liabilities and equity	15,275	14,744	[1]
Southern California Gas Company [Member]
Current assets:
Cash and cash equivalents	15	83	[1]
Trade accounts receivable	314	539	[1]
Other accounts and notes receivable	77	51	[1]
Inventories	177	151	[1]
Due from unconsolidated affiliates	14	24	[1]
Income taxes receivable	139	104	[1]
Deferred income taxes, net current assets	0	3	[1]
Regulatory assets	4	4	[1]
Other current assets	34	35	[1]
Total current assets	774	994	[1]
Investments And Other Assets [Abstract]
Regulatory assets arising from pension and other postretirement benefit obligations	869	835	[1]
Other regulatory assets	267	148	[1]
Sundry	125	77	[1]
Total investments and other assets	1,261	1,060	[1]
Property, plant and equipment:
Property, plant and equipment	11,558	11,187	[1]
Less accumulated depreciation and amortization	(4,305)	(4,170)	[1]
Property, plant and equipment, net	7,253	7,017	[1]
Total assets	9,288	9,071	[1]
Current liabilities:
Accounts payable - trade	256	383	[1]
Accounts payable - other	81	82	[1]
Due to unconsolidated affiliates	20	37	[1]
Deferred income taxes, net current liabilities	32	0	[2]
Accrued compensation and benefits	118	116	[1]
Regulatory balancing accounts, net	82	141	[1]
Current portion of long-term debt	252	4	[1]
Customer deposits	76	76	[1]
Other current liabilities	124	124	[1]
Total current liabilities	1,041	963	[1]
Long-term debt	1,159	1,409	[1]
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction	107	111	[1]
Pension and other postretirement benefit obligations, net of plan assets	888	855	[1]
Deferred income taxes, net noncurrent liabilities	978	881	[1]
Deferred investment tax credits	19	20	[1]
Regulatory liabilities arising from removal obligations	1,178	1,103	[1]
Asset retirement obligations	1,170	1,238	[1]
Deferred credits and other	296	256	[1]
Total deferred credits and other liabilities	4,636	4,464	[1]
Equity:
Preferred stock	22	22	[1]
Common stock	866	866	[1]
Retained earnings	1,581	1,365	[1]
Accumulated other comprehensive income (loss)	(17)	(18)	[1]
Total shareholders' equity	2,452	2,235	[1]
Total equity	2,452	2,235	[1]
Total liabilities and equity	$ 9,288	$ 9,071	[1]

[1] Derived from audited financial statements.

[2] Represents investment (losses) gains on dedicated assets in support of our executive retirement and deferred compensation plans. These amounts are partially offset by corresponding changes in compensation expense related to the plans.