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Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Significant Accounting Policies [Abstract]

Schedule of Comprehensive Income (Loss) [Table Text Block]



	Net Unrealized Gain/(Loss) on Derivatives			Net Unrealized Gain/(Loss) on Investments			Benefit Obligations			Foreign Currency Translation		Accumulated Other Comprehensive Loss
							(In millions)
Beginning balances	$	(4	)	$	(30	)	$	(116	)	$	1	$	(149	)
Current period change, net of tax	—			—			(9		)	—		(9		)
Ending balance	$	(4	)	$	(30	)	$	(125	)	$	1	$	(158	)

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

Summary of intangible assets as of December 31:



(In millions)	2011		2010
Emission allowances	$	9	$	9
Renewable energy credits	27		17
Contract intangible assets	65		63
	101		89
Less accumulated amortization	28		22
Intangible assets, net	$	73	$	67

- Definition

Tabular disclosure of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans.

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- 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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