CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)		Mar. 31, 2016	Dec. 31, 2015	[1]
Current assets:
Cash and cash equivalents		$ 376,000,000	$ 403,000,000
Restricted cash		23,000,000	27,000,000
Trade accounts receivable		1,100,000,000	1,283,000,000
Other accounts and notes receivable		177,000,000	190,000,000
Due from unconsolidated affiliates		7,000,000	6,000,000
Income taxes receivable		49,000,000	30,000,000
Inventories		231,000,000	298,000,000
Regulatory balancing accounts, undercollected		256,000,000	307,000,000
Fixed-price contracts and other derivatives, current assets		88,000,000	80,000,000
Assets held for sale, power plant		303,000,000	0
Other current assets		273,000,000	267,000,000
Total current assets		2,883,000,000	2,891,000,000
Other assets:
Restricted cash, noncurrent		20,000,000	20,000,000
Due from unconsolidated affiliate		186,000,000	186,000,000
Other regulatory assets		3,336,000,000	3,273,000,000
Nuclear decommissioning trusts		1,082,000,000	1,063,000,000
Other investments		2,727,000,000	2,905,000,000
Goodwill		849,000,000	819,000,000
Other intangible assets		402,000,000	404,000,000
Dedicated assets in support of certain benefit plans		432,000,000	464,000,000
Insurance receivable for Aliso Canyon costs		660,000,000	325,000,000
Sundry		825,000,000	761,000,000
Total other assets		10,519,000,000	10,220,000,000
Property, plant and equipment:
Property, plant and equipment		38,541,000,000	38,200,000,000
Less accumulated depreciation and amortization		(10,108,000,000)	(10,161,000,000)
Property, plant and equipment, net		28,433,000,000	28,039,000,000
Total assets		41,835,000,000	41,150,000,000
Current liabilities:
Short-term debt		1,177,000,000	622,000,000
Accounts payable - trade		1,028,000,000	1,133,000,000
Accounts payable - other		129,000,000	142,000,000
Due to unconsolidated affiliates		13,000,000	14,000,000
Dividends and interest payable		360,000,000	303,000,000
Accrued compensation and benefits		259,000,000	423,000,000
Regulatory balancing accounts, overcollected		45,000,000	34,000,000
Current portion of long-term debt		1,066,000,000	907,000,000
Fixed-price contracts and other derivatives, current liabilities		57,000,000	56,000,000
Customer deposits		147,000,000	153,000,000
Reserve for Aliso Canyon costs		302,000,000	274,000,000
Other current liabilities		549,000,000	551,000,000
Total current liabilities		5,132,000,000	4,612,000,000
Long-term debt		12,975,000,000	13,134,000,000
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction		148,000,000	149,000,000
Pension and other postretirement benefit obligations, net of plan assets		1,165,000,000	1,152,000,000
Deferred income taxes, net noncurrent liabilities		3,222,000,000	3,157,000,000
Deferred investment tax credits		32,000,000	32,000,000
Regulatory liabilities arising from removal obligations		2,850,000,000	2,793,000,000
Asset retirement obligations		2,151,000,000	2,126,000,000
Fixed-price contracts and other derivatives, noncurrent liabilities		248,000,000	240,000,000
Deferred credits and other		1,188,000,000	1,176,000,000
Total deferred credits and other liabilities		11,004,000,000	10,825,000,000
Equity:
Preferred stock		0	0
Common stock		2,642,000,000	2,621,000,000
Retained earnings		10,125,000,000	9,994,000,000
Accumulated other comprehensive income (loss)	[2]	(821,000,000)	(806,000,000)
Total shareholders' equity		11,946,000,000	11,809,000,000
Preferred stock of subsidiaries		20,000,000	20,000,000
Other noncontrolling interests		758,000,000	750,000,000
Total equity		12,724,000,000	12,579,000,000
Total liabilities and equity		41,835,000,000	41,150,000,000
San Diego Gas and Electric Company [Member]
Current assets:
Cash and cash equivalents		36,000,000	20,000,000
Restricted cash		21,000,000	23,000,000
Trade accounts receivable		300,000,000	331,000,000
Other accounts and notes receivable		18,000,000	17,000,000
Due from unconsolidated affiliates		1,000,000	1,000,000
Inventories		72,000,000	75,000,000
Regulatory balancing accounts, undercollected		256,000,000	307,000,000
Other regulatory assets		119,000,000	107,000,000
Fixed-price contracts and other derivatives, current assets		50,000,000	53,000,000
Other current assets		64,000,000	70,000,000
Total current assets		937,000,000	1,004,000,000
Other assets:
Restricted cash, noncurrent		2,000,000	0
Deferred taxes recoverable in rates		921,000,000	914,000,000
Other regulatory assets		968,000,000	977,000,000
Nuclear decommissioning trusts		1,082,000,000	1,063,000,000
Sundry		331,000,000	301,000,000
Total other assets		3,304,000,000	3,255,000,000
Property, plant and equipment:
Property, plant and equipment		16,668,000,000	16,458,000,000
Less accumulated depreciation and amortization		(4,284,000,000)	(4,202,000,000)
Property, plant and equipment, net		12,384,000,000	12,256,000,000
Total assets		16,625,000,000	16,515,000,000
Current liabilities:
Short-term debt		166,000,000	168,000,000
Accounts payable - trade		295,000,000	377,000,000
Due to unconsolidated affiliates		49,000,000	55,000,000
Income taxes payable		59,000,000	0
Accrued compensation and benefits		67,000,000	129,000,000
Accrued Franchise Fees		46,000,000	66,000,000
Current portion of long-term debt		191,000,000	50,000,000
Fixed-price contracts and other derivatives, current liabilities		53,000,000	51,000,000
Customer deposits		71,000,000	72,000,000
Interest payable		39,000,000	39,000,000
Asset Retirement Obligation Current		63,000,000	99,000,000
Other current liabilities		130,000,000	101,000,000
Total current liabilities		1,229,000,000	1,207,000,000
Long-term debt		4,294,000,000	4,455,000,000
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction		44,000,000	46,000,000
Pension and other postretirement benefit obligations, net of plan assets		216,000,000	212,000,000
Deferred income taxes, net noncurrent liabilities		2,497,000,000	2,472,000,000
Deferred investment tax credits		20,000,000	19,000,000
Regulatory liabilities arising from removal obligations		1,692,000,000	1,629,000,000
Asset retirement obligations		745,000,000	729,000,000
Fixed-price contracts and other derivatives, noncurrent liabilities		107,000,000	106,000,000
Deferred credits and other		378,000,000	364,000,000
Total deferred credits and other liabilities		5,699,000,000	5,577,000,000
Equity:
Common stock		1,338,000,000	1,338,000,000
Retained earnings		4,022,000,000	3,893,000,000
Accumulated other comprehensive income (loss)		(8,000,000)	(8,000,000)
Total shareholders' equity		5,352,000,000	5,223,000,000
Other noncontrolling interests		51,000,000	53,000,000
Total equity		5,403,000,000	5,276,000,000
Total liabilities and equity		16,625,000,000	16,515,000,000
Southern California Gas Company [Member]
Current assets:
Cash and cash equivalents		14,000,000	58,000,000
Trade accounts receivable		445,000,000	635,000,000
Other accounts and notes receivable		99,000,000	99,000,000
Due from unconsolidated affiliates		8,000,000	48,000,000
Inventories		33,000,000	79,000,000
Other regulatory assets		8,000,000	7,000,000
Other current assets		44,000,000	40,000,000
Total current assets		651,000,000	966,000,000
Other assets:
Regulatory assets arising from pension and other postretirement benefit obligations		715,000,000	699,000,000
Other regulatory assets		686,000,000	636,000,000
Insurance receivable for Aliso Canyon costs		660,000,000	325,000,000
Sundry		252,000,000	207,000,000
Total other assets		2,313,000,000	1,867,000,000
Property, plant and equipment:
Property, plant and equipment		14,359,000,000	14,171,000,000
Less accumulated depreciation and amortization		(4,896,000,000)	(4,900,000,000)
Property, plant and equipment, net		9,463,000,000	9,271,000,000
Total assets		12,427,000,000	12,104,000,000
Current liabilities:
Short-term debt		5,000,000	0
Accounts payable - trade		351,000,000	422,000,000
Accounts payable - other		77,000,000	76,000,000
Due to unconsolidated affiliates		34,000,000	0
Income taxes payable		27,000,000	3,000,000
Accrued compensation and benefits		110,000,000	160,000,000
Regulatory balancing accounts, overcollected		45,000,000	34,000,000
Current portion of long-term debt		9,000,000	9,000,000
Customer deposits		70,000,000	76,000,000
Reserve for Aliso Canyon costs		302,000,000	274,000,000
Other current liabilities		193,000,000	184,000,000
Total current liabilities		1,223,000,000	1,238,000,000
Long-term debt		2,481,000,000	2,481,000,000
Deferred Credits And Other Liabilities [Abstract]
Customer advances for construction		104,000,000	103,000,000
Pension and other postretirement benefit obligations, net of plan assets		733,000,000	716,000,000
Deferred income taxes, net noncurrent liabilities		1,643,000,000	1,532,000,000
Deferred investment tax credits		13,000,000	14,000,000
Regulatory liabilities arising from removal obligations		1,139,000,000	1,145,000,000
Asset retirement obligations		1,367,000,000	1,354,000,000
Deferred credits and other		380,000,000	372,000,000
Total deferred credits and other liabilities		5,379,000,000	5,236,000,000
Equity:
Preferred stock		22,000,000	22,000,000
Common stock		866,000,000	866,000,000
Retained earnings		2,475,000,000	2,280,000,000
Accumulated other comprehensive income (loss)		(19,000,000)	(19,000,000)
Total shareholders' equity		3,344,000,000	3,149,000,000
Total equity		3,344,000,000	3,149,000,000
Total liabilities and equity		$ 12,427,000,000	$ 12,104,000,000

[1] Derived from audited financial statements.

[2] All amounts are net of income tax, if subject to tax, and exclude noncontrolling interests.