CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 844	$ 904	[1]
Restricted cash	26	24	[1]
Trade accounts receivable	1,230	1,308	[1]
Other accounts and notes receivable	175	214	[1]
Inventories	197	287	[1]
Due from unconsolidated affiliates	2	4	[1]
Income taxes receivable	88	85	[1]
Deferred income taxes, net current assets	375	301	[1]
Regulatory balancing accounts, undercollected	665	556	[1]
Regulatory assets	35	38	[1]
Fixed-price contracts and other derivatives, current assets	114	106	[1]
Assets held for sale, power plant	293	0	[1]
Other current assets	180	170	[1]
Total current assets	4,224	3,997	[1]
Investments And Other Assets [Abstract]
Restricted cash, noncurrent	27	25	[1]
Due from unconsolidated affiliate	31	14	[1]
Regulatory assets arising from pension and other postretirement benefit obligations	454	435	[1]
Other regulatory assets	2,039	2,113	[1]
Nuclear decommissioning trusts	1,055	1,034	[1]
Other investments	1,634	1,575	[1]
Goodwill	999	1,024	[1]
Other intangible assets	423	426	[1]
Sundry	1,146	1,141	[1]
Total investments and other assets	7,808	7,787	[1]
Property, plant and equipment:
Property, plant and equipment	34,463	34,407	[1]
Less accumulated depreciation and amortization	(9,011)	(8,947)	[1]
Property, plant and equipment, net	25,452	25,460	[1]
Total assets	37,484	37,244	[1]
Current liabilities:
Short-term debt	1,084	545	[1]
Accounts payable - trade	1,062	1,088	[1]
Accounts payable - other	138	127	[1]
Dividends and interest payable	322	271	[1]
Accrued compensation and benefits	260	376	[1]
Regulatory balancing accounts, overcollected	88	91	[1]
Current portion of long-term debt	97	1,147	[1]
Fixed-price contracts and other derivatives, current liabilities	54	55	[1]
Customer deposits	155	154	[1]
Other current liabilities	615	515	[1]
Total current liabilities	3,875	4,369	[1]
Long-term debt	11,700	11,253	[1]
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction	158	155	[1]
Pension and other postretirement benefit obligations, net of plan assets	679	667	[1]
Deferred income taxes, net noncurrent liabilities	2,958	2,804	[1]
Deferred investment tax credits	41	42	[1]
Regulatory liabilities arising from removal obligations	2,624	2,623	[1]
Asset retirement obligations	2,127	2,084	[1]
Fixed-price contracts and other derivatives, noncurrent liabilities	238	228	[1]
Deferred credits and other	1,195	1,169	[1]
Total deferred credits and other liabilities	10,020	9,772	[1]
Equity:
Preferred stock	0	0	[1]
Common stock	2,401	2,409	[1]
Retained earnings	8,912	8,827	[1]
Accumulated other comprehensive income (loss)	(273)	(228)	[1]
Total shareholders' equity	11,040	11,008	[1]
Preferred stock of subsidiaries	20	20	[1]
Other noncontrolling interests	829	822	[1]
Total equity	11,889	11,850	[1]
Total liabilities and equity	37,484	37,244	[1]
San Diego Gas and Electric Company and Subsidiary [Member]
Current assets:
Cash and cash equivalents	12	27	[1]
Restricted cash	4	6	[1]
Trade accounts receivable	272	266	[1]
Other accounts and notes receivable	19	28	[1]
Inventories	76	86	[1]
Due from unconsolidated affiliates	12	1	[1]
Income taxes receivable	6	32	[1]
Deferred income taxes, net current assets	188	103	[1]
Regulatory balancing accounts, net	665	556	[1]
Regulatory assets	29	29	[1]
Fixed-price contracts and other derivatives, current assets	64	61	[1]
Other current assets	66	75	[1]
Total current assets	1,413	1,270	[1]
Investments And Other Assets [Abstract]
Restricted cash, noncurrent	27	25	[1]
Deferred taxes recoverable in rates	749	788	[1]
Regulatory assets arising from fixed-price contracts and other derivatives - noncurrent	62	63	[1]
Regulatory assets arising from pension and other postretirement benefit obligations	111	106	[1]
Other regulatory assets	948	991	[1]
Nuclear decommissioning trusts	1,055	1,034	[1]
Sundry	255	254	[1]
Total investments and other assets	3,207	3,261	[1]
Property, plant and equipment:
Property, plant and equipment	14,606	14,346	[1]
Less accumulated depreciation and amortization	(3,592)	(3,500)	[1]
Property, plant and equipment, net	11,014	10,846	[1]
Total assets	15,634	15,377	[1]
Current liabilities:
Short-term debt	90	59	[1]
Accounts payable - trade	337	420	[1]
Due to unconsolidated affiliates	35	39	[1]
Dividends and interest payable	51	39	[1]
Accrued compensation and benefits	75	113	[1]
Current portion of long-term debt	30	29	[1]
Fixed-price contracts and other derivatives, current liabilities	38	38	[1]
Customer deposits	71	71	[1]
Other current liabilities	310	271	[1]
Total current liabilities	1,037	1,079	[1]
Long-term debt	4,580	4,525	[1]
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction	37	34	[1]
Pension and other postretirement benefit obligations, net of plan assets	138	132	[1]
Deferred income taxes, net noncurrent liabilities	2,107	2,021	[1]
Deferred investment tax credits	23	24	[1]
Regulatory liabilities arising from removal obligations	1,428	1,403	[1]
Asset retirement obligations	872	861	[1]
Fixed-price contracts and other derivatives, noncurrent liabilities	172	175	[1]
Deferred credits and other	426	404	[1]
Total deferred credits and other liabilities	5,203	5,054	[1]
Equity:
Common stock	1,338	1,338	[1]
Retained earnings	3,398	3,299	[1]
Accumulated other comprehensive income (loss)	(9)	(9)	[1]
Total shareholders' equity	4,727	4,628	[1]
Other noncontrolling interests	87	91	[1]
Total equity	4,814	4,719	[1]
Total liabilities and equity	15,634	15,377	[1]
Southern California Gas Company [Member]
Current assets:
Cash and cash equivalents	32	27	[1]
Trade accounts receivable	557	595	[1]
Other accounts and notes receivable	55	97	[1]
Inventories	45	69	[1]
Due from unconsolidated affiliates	104	21	[1]
Income taxes receivable	41	25	[1]
Regulatory assets	6	5	[1]
Other current assets	39	34	[1]
Total current assets	879	873	[1]
Investments And Other Assets [Abstract]
Regulatory assets arising from pension and other postretirement benefit obligations	341	326	[1]
Other regulatory assets	272	262	[1]
Other post retirement benefit assets, net of plan liabilities	95	95	[1]
Sundry	126	124	[1]
Total investments and other assets	834	807	[1]
Property, plant and equipment:
Property, plant and equipment	12,041	11,831	[1]
Less accumulated depreciation and amortization	(4,423)	(4,364)	[1]
Property, plant and equipment, net	7,618	7,467	[1]
Total assets	9,331	9,147	[1]
Current liabilities:
Short-term debt	0	42	[1]
Accounts payable - trade	410	346	[1]
Accounts payable - other	79	79	[1]
Due to unconsolidated affiliates	11	16	[1]
Deferred income taxes, net current liabilities	75	45	[1]
Accrued compensation and benefits	107	141	[1]
Regulatory balancing accounts, net	88	91	[1]
Current portion of long-term debt	1	252	[1]
Customer deposits	75	75	[1]
Other current liabilities	175	125	[1]
Total current liabilities	1,021	1,212	[1]
Long-term debt	1,408	1,159	[1]
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction	108	108	[1]
Pension and other postretirement benefit obligations, net of plan assets	354	339	[1]
Deferred income taxes, net noncurrent liabilities	1,014	993	[1]
Deferred investment tax credits	18	18	[1]
Regulatory liabilities arising from removal obligations	1,180	1,205	[1]
Asset retirement obligations	1,220	1,182	[1]
Deferred credits and other	286	287	[1]
Regulatory liabilities arising from other post retirement benefit assets	95	95	[1]
Total deferred credits and other liabilities	4,275	4,227	[1]
Equity:
Preferred stock	22	22	[1]
Common stock	866	866	[1]
Retained earnings	1,757	1,679	[1]
Accumulated other comprehensive income (loss)	(18)	(18)	[1]
Total shareholders' equity	2,627	2,549	[1]
Total equity	2,627	2,549	[1]
Total liabilities and equity	$ 9,331	$ 9,147	[1]

[1] Derived from audited financial statements.