CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 404	$ 252	[1],[2]
Restricted cash	23	24	[1],[2]
Other accounts and notes receivable	177	147	[1],[2]
Trade accounts receivable	1,062	1,198	[1],[2]
Inventories	222	346	[1],[2]
Regulatory balancing accounts, undercollected	71	38	[1],[2]
Regulatory assets	105	89	[1],[2]
Fixed-price contracts and other derivatives, current assets	83	85	[1],[2]
Settlement receivable related to wildfire litigation	5	10	[1],[2]
Other current assets	146	143	[1],[2]
Total current assets	2,298	2,332	[1],[2]
Investments And Other Assets [Abstract]
Restricted cash, noncurrent	24	22	[1],[2]
Regulatory assets arising from pension and other postretirement benefit obligations	1,074	1,126	[1],[2]
Regulatory assets arising from wildfire litigation costs	603	594	[1],[2]
Other regulatory assets	1,070	1,060	[1],[2]
Nuclear decommissioning trusts	865	804	[1],[2]
Other investments	1,722	1,671	[1],[2]
Goodwill	1,071	1,036	[1],[2]
Other intangible assets	443	448	[1],[2]
Sundry	799	691	[1],[2]
Total investments and other assets	7,671	7,452	[1],[2]
Property, plant and equipment:
Property, plant and equipment	31,995	31,192	[1],[2]
Less accumulated depreciation and amortization	(7,919)	(7,727)	[1],[2]
Property, plant and equipment, net	24,076	23,465	[1],[2]
Total assets	34,045	33,249	[1],[2]
Current liabilities:
Short-term debt	426	449	[1],[2]
Accounts payable - trade	901	983	[1],[2]
Accounts payable - other	112	124	[1],[2]
Income taxes payable	53	5	[1],[2]
Deferred income taxes, net current liabilities	172	173	[1],[2]
Dividends and interest payable	297	219	[1],[2]
Accrued compensation and benefits	203	323	[1],[2]
Regulatory balancing accounts, overcollected	240	105	[1],[2]
Current portion of long-term debt	713	336	[1],[2]
Fixed-price contracts and other derivatives, current liabilities	92	92	[1],[2]
Customer deposits	148	142	[1],[2]
Reserve for wildfire litigation (Note 10)	441	586	[1],[2]
Other current liabilities	682	615	[1],[2]
Total current liabilities	4,480	4,152	[1],[2]
Long-term debt	10,180	10,078	[1],[2]
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction	143	142	[1],[2]
Pension and other postretirement benefit obligations, net of plan assets	1,373	1,423	[1],[2]
Deferred income taxes, net noncurrent liabilities	1,601	1,520	[1],[2]
Deferred investment tax credits	48	49	[1],[2]
Regulatory liabilities arising from removal obligations	2,621	2,551	[1],[2]
Asset retirement obligations	1,927	1,905	[1],[2]
Other regulatory liabilities	80	87	[1],[2]
Fixed-price contracts and other derivatives, noncurrent liabilities	281	301	[1],[2]
Deferred credits and other	862	784	[1],[2]
Total deferred credits and other liabilities	8,936	8,762	[1],[2]
Contingently redeemable preferred stock of subsidiary	79	79	[1],[2]
Equity:
Common stock	2,117	2,104	[1],[2]
Retained earnings	8,254	8,162	[1],[2]
Deferred compensation	(1)	(2)	[1],[2]
Accumulated other comprehensive income (loss)	(418)	(489)	[1],[2]
Total shareholders' equity	9,952	9,775	[1],[2]
Preferred stock of subsidiaries	20	20	[1],[2]
Other noncontrolling interests	398	383	[1],[2]
Total equity	10,370	10,178	[1],[2]
Total liabilities and equity	34,045	33,249	[1],[2]
San Diego Gas and Electric Company and Subsidiary [Member]
Current assets:
Cash and cash equivalents	139	29	[2]
Restricted cash	18	21	[2]
Other accounts and notes receivable	23	23	[2]
Trade accounts receivable	228	267	[2]
Inventories	77	82	[2]
Due from unconsolidated affiliates	1	67	[2]
Income taxes receivable	109	102	[2]
Regulatory balancing accounts, net	71	38	[2]
Regulatory assets arising from fixed-price contracts and other derivatives - current	81	67	[2]
Regulatory assets	11	11	[2]
Fixed-price contracts and other derivatives, current assets	28	27	[2]
Settlement receivable related to wildfire litigation	5	10	[2]
Other current assets	37	51	[2]
Total current assets	828	795	[2]
Investments And Other Assets [Abstract]
Restricted cash, noncurrent	24	22	[2]
Deferred taxes recoverable in rates	585	570	[2]
Regulatory assets arising from fixed-price contracts and other derivatives - noncurrent	183	191	[2]
Regulatory assets arising from pension and other postretirement benefit obligations	314	309	[2]
Regulatory assets arising from wildfire litigation costs	603	594	[2]
Other regulatory assets	162	160	[2]
Nuclear decommissioning trusts	865	804	[2]
Income Taxes Receivable Noncurrent	104
Sundry	73	70	[2]
Total investments and other assets	2,913	2,720	[2]
Property, plant and equipment:
Property, plant and equipment	13,352	13,003	[2]
Less accumulated depreciation and amortization	(3,045)	(2,963)	[2]
Property, plant and equipment, net	10,307	10,040	[2]
Total assets	14,048	13,555	[2]
Current liabilities:
Accounts payable - trade	305	375	[2]
Due to unconsolidated affiliates	36	14	[2]
Deferred income taxes, net current liabilities	59	62	[2]
Accrued compensation and benefits	65	124	[2]
Current portion of long-term debt	19	19	[2]
Fixed-price contracts and other derivatives, current liabilities	59	55	[2]
Customer deposits	67	62	[2]
Reserve for wildfire litigation (Note 10)	441	586	[2]
Other current liabilities	202	139	[2]
Total current liabilities	1,253	1,436	[2]
Long-term debt	4,303	4,058	[2]
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction	19	20	[2]
Pension and other postretirement benefit obligations, net of plan assets	347	342	[2]
Deferred income taxes, net noncurrent liabilities	1,337	1,167	[2]
Deferred investment tax credits	25	26	[2]
Regulatory liabilities arising from removal obligations	1,527	1,462	[2]
Asset retirement obligations	704	693	[2]
Fixed-price contracts and other derivatives, noncurrent liabilities	232	243	[2]
Deferred credits and other	270	188	[2]
Total deferred credits and other liabilities	4,461	4,141	[2]
Contingently redeemable preferred stock	79	79	[2]
Equity:
Common stock	1,338	1,338	[2]
Retained earnings	2,516	2,411	[2]
Accumulated other comprehensive income (loss)	(10)	(10)	[2]
Total shareholders' equity	3,844	3,739	[2]
Other noncontrolling interests	108	102	[2]
Total equity	3,952	3,841	[2]
Total liabilities and equity	14,048	13,555	[2]
Southern California Gas Company [Member]
Current assets:
Cash and cash equivalents	70	36	[2]
Other accounts and notes receivable	70	63	[2]
Trade accounts receivable	457	578	[2]
Temporary LIFO liquidation	32
Inventories	42	151	[2]
Due from unconsolidated affiliates	229	40	[2]
Income taxes receivable		17	[2]
Regulatory assets	7	9	[2]
Other current assets	26	28	[2]
Total current assets	933	922	[2]
Investments And Other Assets [Abstract]
Regulatory assets arising from pension and other postretirement benefit obligations	751	808	[2]
Other regulatory assets	138	137	[2]
Sundry	8	8	[2]
Total investments and other assets	897	953	[2]
Property, plant and equipment:
Property, plant and equipment	10,679	10,565	[2]
Less accumulated depreciation and amortization	(4,017)	(3,965)	[2]
Property, plant and equipment, net	6,662	6,600	[2]
Total assets	8,492	8,475	[2]
Current liabilities:
Accounts payable - trade	195	315	[2]
Accounts payable - other	73	78	[2]
Due to unconsolidated affiliates		2	[2]
Income taxes payable	5
Deferred income taxes, net current liabilities	44	44	[2]
Accrued compensation and benefits	82	99	[2]
Regulatory balancing accounts, net credit	240	105	[2]
Current portion of long-term debt	256	257	[2]
Customer deposits	76	75	[2]
Other current liabilities	197	172	[2]
Total current liabilities	1,168	1,147	[2]
Long-term debt	1,063	1,064	[2]
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction	111	110	[2]
Pension and other postretirement benefit obligations, net of plan assets	778	833	[2]
Deferred income taxes, net noncurrent liabilities	599	576	[2]
Deferred investment tax credits	22	23	[2]
Regulatory liabilities arising from removal obligations	1,080	1,075	[2]
Asset retirement obligations	1,173	1,161	[2]
Deferred taxes refundable in rates	80	87	[2]
Deferred credits and other	209	206	[2]
Total deferred credits and other liabilities	4,052	4,071	[2]
Equity:
Preferred stock	22	22	[2]
Common stock	866	866	[2]
Retained earnings	1,342	1,326	[2]
Accumulated other comprehensive income (loss)	(21)	(21)	[2]
Total shareholders' equity	2,209	2,193	[2]
Total equity	2,209	2,193
Total liabilities and equity	$ 8,492	$ 8,475	[2]

[1] As adjusted for the retrospective effect of a change in accounting principle as we discuss in Note 1.

[2] Derived from audited financial statements.