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Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2012

Significant Accounting Policies [Abstract]

Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block]

The Company has certain intangible assets relating to emission allowances, renewable energy credits and non-utility contracts. Summary of intangible assets as of March 31, 2012 and December 31, 2011:



	March 31,		December 31,
	2012		2011
	(In millions)
Emission allowances	$	9	$	10
Renewable energy credits	40		39
Contract intangible assets	64		65
	113		114
Less accumulated amortization	28		28
Intangible assets, net	$	85	$	86
Less current intangible assets	$	15	$	13
	$	70	$	73

- Definition

Tabular disclosure of amortizable intangibles assets, in total and by major class, including the gross carrying amount and accumulated amortization. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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