CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 251		$ 260	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	257		230	[1]
Deferred income taxes and investment tax credits	31		82	[1]
Equity earnings	(23)		(32)	[1]
Fixed-price contracts and other derivatives	(12)		(9)	[1]
Other adjustments to reconcile net income to net cash provided by operating activities	14		(13)	[1]
Net change in other working capital components	168		297	[1]
Changes in other assets	12		(5)	[1]
Changes in other liabilities	1		(5)	[1]
Net cash provided by operating activities	699		805	[1]
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(811)		(607)	[1]
Expenditures for investments	(51)		(4)	[1]
Distributions from investments	8		21	[1]
Purchases of nuclear decommissioning and other trust assets	(134)		(45)	[1]
Proceeds from sales by nuclear decommissioning and other trusts	135		46	[1]
Decrease in restricted cash	39		160	[1]
Increase in restricted cash	(40)		(320)	[1]
Other cash flows from investing activities	(5)		(7)	[1]
Net cash used in investing activities	(859)		(756)	[1]
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(115)		(94)	[1]
Preferred dividends paid by subsidiaries	(2)		(2)	[1]
Issuances of common stock	13		15	[1]
Repurchases of common stock	(16)		(18)	[1]
Issuances of debt (maturities greater than 90 days)	1,008		803	[1]
Payments on debt (maturities greater than 90 days)	(347)		(260)	[1]
Increase (decrease) in short-term debt, net	(224)		(192)	[1]
Other cash flows from financing activities	(7)		6	[1]
Net cash provided by (used in) financing activities	310		258	[1]
Effect of exchange rate changes on cash and cash equivalents	2
Increase (decrease) in cash and cash equivalents	152		307	[1]
Cash and cash equivalents, beginning of period	252	[1],[2]	912	[1]
Cash and cash equivalents, end of period	404		1,219	[1]
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	62		63
Income tax payments, net of refunds	38		37
SUPPLEMENTAL DISCLOSURE OF NONCASH ACTIVITIES
Accrued capital expenditures	336		233
Dividends declared but not paid	151		118
San Diego Gas and Electric Company and Subsidiary [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	112		94
Adjustments to reconcile net income to net cash provided by operating activities:
Utility depreciation and amortization	112		103
Deferred income taxes and investment tax credits	152		75
Fixed-price contracts and other derivatives	(3)		(4)
Other adjustments to reconcile net income to net cash provided by operating activities	(27)		(12)
Net change in other working capital components	(85)		241
Changes in other assets	8		7
Changes in other liabilities	(3)		(3)
Net cash provided by operating activities	266		501
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(398)		(348)
Purchases of nuclear decommissioning and other trust assets	(133)		(44)
Proceeds from sales by nuclear decommissioning and other trusts	131		42
Decrease in restricted cash	37		109
Increase in restricted cash	(36)		(311)
Net cash used in investing activities	(399)		(552)
CASH FLOWS FROM FINANCING ACTIVITIES
Capital contribution			200
Preferred dividends paid	(1)		(1)
Issuances of long-term debt	249
Payments on long-term debt	(3)		(3)
Other cash flows from financing activities	(2)
Net cash provided by (used in) financing activities	243		196
Increase (decrease) in cash and cash equivalents	110		145
Cash and cash equivalents, beginning of period	29	[2]	127
Cash and cash equivalents, end of period	139		272
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	17		17
Income tax payments, net of refunds	(62)		24
SUPPLEMENTAL DISCLOSURE OF NONCASH ACTIVITIES
Accrued capital expenditures	134		145
Dividends declared but not paid	1		1
Southern California Gas Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	66		68
Adjustments to reconcile net income to net cash provided by operating activities:
Utility depreciation and amortization	87		81
Deferred income taxes and investment tax credits	14		48
Other adjustments to reconcile net income to net cash provided by operating activities	(1)		(2)
Net change in other working capital components	280		168
Changes in other assets	3		12
Changes in other liabilities			(4)
Net cash provided by operating activities	449		371
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(165)		(168)
Increase (decrease) in loans to affiliates, net	(200)		(287)
Net cash used in investing activities	(365)		(455)
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(50)		(50)
Payments on long-term debt			(250)
Net cash provided by (used in) financing activities	(50)		(300)
Increase (decrease) in cash and cash equivalents	34		(384)
Cash and cash equivalents, beginning of period	36	[2]	417
Cash and cash equivalents, end of period	70		33
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	5		8
Income tax payments, net of refunds	17		14
SUPPLEMENTAL DISCLOSURE OF NONCASH ACTIVITIES
Accrued capital expenditures	$ 64		$ 76

[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.