Variable Interest Entities (Tables)

12 Months Ended

Dec. 31, 2011

Variable Interest Entities Disclosure [Abstract]

Summarized financial information of the consolidated projects

The following table presents summarized financial information of the projects that were consolidated by EMG:

(in millions)	December 31, 2011		December 31, 2010
Current assets	$	36	$	26
Net property, plant and equipment	675		739
Other long-term assets	5		6
Total assets	$	716	$	771
Current liabilities	$	28	$	25
Long-term debt net of current portion	57		71
Deferred revenues	69		71
Other long-term liabilities	22		21
Total liabilities	$	176	$	188
Noncontrolling interests	$	2	$	4

Carrying amount of investments in unconsolidated variable interest entities and the maximum exposure to loss for each investment

The following table presents the carrying amount of EMG's investments in unconsolidated VIEs and the maximum exposure to loss for each investment:

	December 31, 2011
(in millions)	Investment		Maximum Exposure
Natural gas-fired projects	$	315	$	315
Wind projects	208		208

Investments in unconsolidated affiliates accounted for by the equity method

The following table presents summarized financial information of the investments in unconsolidated affiliates accounted for by the equity method:

	Years Ended December 31,
(in millions)	2011		2010		2009
Revenues	$	971	$	1,043	$	581
Expenses	839		934		506
Net income	$	132	$	109	$	75

	December 31,
(in millions)	2011		2010
Current assets	$	337	$	352
Noncurrent assets	2,098		2,437
Total assets	$	2,435	$	2,789
Current liabilities	$	144	$	227
Noncurrent liabilities	1,230		1,312
Equity	1,061		1,250
Total liabilities and equity	$	2,435	$	2,789

Investments in unconsolidated affiliates accounted for under the equity method and represents at least 5% of income

The following table presents, as of December 31, 2011, the investments in unconsolidated affiliates accounted for by the equity method that represent at least 5% of EMG's loss before tax, excluding asset impairment charges, or in which EMG has an investment balance greater than $50 million:

Unconsolidated Affiliates	Location	Investment at December 31, 2011 (in millions)		Ownership Interest at December 31, 2011	Operating Status
San Juan Mesa	Elida, NM	$	84	75%	Operating wind-powered facility
Elkhorn Ridge	Bloomfield, NE	81		67%	Operating wind-powered facility
Sunrise	Fellows, CA	173		50%	Operating gas-fired facility
Sycamore	Bakersfield, CA	34		50%	Operating cogeneration facility
Kern River	Bakersfield, CA	21		50%	Operating cogeneration facility
Watson	Carson, CA	42		49%	Operating cogeneration facility

Summarized financial information of the investments in unconsolidated affiliates

The following table presents summarized financial information of the investments in unconsolidated affiliates:

	December 31,
(in millions)	2011		2010
Investments in Unconsolidated Affiliates
Equity investments	$	517	$	550
Cost investments	8		9
Total	$	525	$	559