Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

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

	Changes in Accumulated Other Comprehensive Loss by Component (a)
	For The Year Ended December 31, 2013
	Net Unrealized Gain/(Loss) on Derivatives			Net Unrealized Gain/(Loss) on Investments			Benefit Obligations (b)			Foreign Currency Translation			Total
	(In millions)
Beginning balances December 31, 2012	$	(4	)	$	(8	)	$	(148	)	$	2		$	(158	)
Other comprehensive income (loss) before reclassifications	—			2			13			(2		)	13
Amounts reclassified from accumulated other comprehensive income (loss)	—			—			9			—			9
Net current-period other comprehensive income (loss)	—			2			22			(2		)	22
Ending balances December 31, 2013	$	(4	)	$	(6	)	$	(126	)	$	—		$	(136	)

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(a) All amounts are net of tax.

(b) The amounts reclassified from accumulated other comprehensive income (loss) are included in the computation of the net periodic pension and other postretirement benefit costs (see Note 20).

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 as shown below:

	December 31,		December 31,
	2013		2012
	(In millions)
Emission allowances	$	2	$	6
Renewable energy credits	51		44
Contract intangible assets	126		139
	179		189
Less accumulated amortization	45		34
Intangible assets, net	134		155
Less current intangible assets	12		20
	$	122	$	135

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The following table summarizes the estimated amortization expense expected to be recognized during each year through 2018:

Estimated amortization expense	(In millions)
2014	$	13
2015	$	12
2016	$	11
2017	$	8
2018	$	8