RECENT INVESTMENT ACTIVITY (Tables)

12 Months Ended

Dec. 31, 2011

Proforma Revenue (Tables) [Abstract]

Schedule of Proforma Revenue [Text Block]

		Years ended December 31,
(Dollars in millions)		2011		2010
Revenues		$	10,379	$	10,277
Earnings(1)			1,079		1,062
(1)	Pro forma earnings for 2010 include the $277 million gain related to the remeasurement of equity method investments, and accordingly, pro forma earnings for 2011 exclude the gain.

Purchase Price Allocation (Tables) [Abstract]

Schedule of Purchase Price Allocation [Text Block]

PURCHASE PRICE ALLOCATION
(Dollars in millions)
			At April 6, 2011
								Other
				Chilean		Peruvian		holding		Preliminary		Adjust-		Adjusted
				entities		entities		companies		Allocation		ments		Allocation
Fair value of businesses acquired:
	Cash consideration (fair value of total
	consideration)		$	495	$	385	$	8	$	888	$	―	$	888
	Fair value of equity method
	investments immediately prior to
	the acquisition			495		385		2		882		―		882
	Fair value of noncontrolling interests			37		242		―		279		―		279
Total fair value of businesses acquired				1,027		1,012		10		2,049		―		2,049
Recognized amounts of identifiable assets
	acquired and liabilities assumed:
		Cash		219		22		4		245		―		245
		Accounts receivable(1)		159		101		6		266		(2)		264
		Other current assets		20		19		―		39		2		41
		Property, plant and equipment		554		931		―		1,485		1		1,486
		Other noncurrent assets		66		―		―		66		1		67
		Accounts payable		(79)		(59)		―		(138)		6		(132)
		Short-term debt and current portion
		of long-term debt		―		(47)		―		(47)		―		(47)
		Other current liabilities		(29)		(56)		―		(85)		(4)		(89)
		Long-term debt		(294)		(179)		―		(473)		(11)		(484)
		Other noncurrent liabilities		(90)		(178)		―		(268)		(9)		(277)
Total identifiable net assets				526		554		10		1,090		(16)		1,074
Goodwill			$	501	$	458	$	―	$	959	$	16	$	975
Acquisition-related costs (included in Other
	Operation and Maintenance expense on
	the Consolidated Statement of
	Operations for the year ended
	December 31, 2011)		$	1	$	1	$	―	$	2	$	―	$	2
(1)		We expect acquired accounts receivable to be substantially realizable in cash. Accounts receivable are net of collection allowances of $6 million for Chile and $1 million for Peru.

Recent Investment Activity (Tables) [Abstract]

Schedule of Business Acquisitions, by Acquisition

(Dollars in millions)			At April 30, 2010
Cash consideration (fair value of total consideration)			$	307
Recognized amounts of identifiable assets acquired and liabilities assumed:
	Cash			15
	Accounts receivable			4
	Investment in equity method investee			256
	Property, plant & equipment			25
	Other liabilities			(11)
Total identifiable net assets				289
Goodwill(1)			$	18
Acquisition-related costs (included in Other Operation and Maintenance expense
	on the Consolidated Statement of Operations for the year ended
	December 31, 2010)		$	1
(1)		The goodwill, which represents the residual of the consideration paid over the identifiable net assets, is assigned to the Sempra Mexico segment and is attributed to the strategic value of the transaction. None of the goodwill recorded is deductible in Mexico for income tax purposes.