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Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Schedule Of Costs Incurred Attributable To Each Category Of Power Purchase Agreements

		000000000		000000000		000000000
	Payments
(in millions)	2011		2010		2009
Qualifying facilities⁽¹⁾		$ 1,069		$ 1,164		$ 1,210
Renewable energy contracts		622		573		362
Other power purchase agreements		690		657		701
⁽¹⁾Payments include $297, $321, and $344 attributable to renewable energy contracts with qualifying facilities at December 31, 2011, 2010 and 2009, respectively.

Schedule Of Undiscounted Future Expected Power Purchase Agreement Payments


(in millions)	Qualifying Facility		Renewable (Other than QF)		Other		Total Payments
2012		$ 736		$ 831		$ 656		$ 2,223
2013		781		1,058		807		2,646
2014		807		1,269		646		2,722
2015		725		1,352		614		2,691
2016		690		1,370		601		2,661
Thereafter		3,341		18,058		3,726		25,125

Total		$ 7,080		$ 23,938		$ 7,050		$ 38,068

Schedule Of Fixed Capacity Payments Due Under The QF Contracts Discount

			september 3000
(in millions)
2012			$ 50
2013			50
2014			42
2015			38
2016			36
Thereafter			89

Total fixed capacity payments			305
Less: amount representing interest			57

Present value of fixed capacity payments			$ 248

Undiscounted Obligations For Natural Gas Purchases, Gas Transportation Services, And Gas Storage

			september 3000
(in millions)
2012			$ 746
2013			249
2014			198
2015			188
2016			152
Thereafter			974

Total			$ 2,507

Undiscounted Obligations Under Nuclear Fuel Agreements

			september 3000
(in millions)
2012			$ 88
2013			89
2014			130
2015			189
2016			141
Thereafter			909

Total			$ 1,546

Future Minimum Payments Of Operating Leases

			september 3000
(in millions)
2012			$ 30
2013			27
2014			20
2015			16
2016			15
Thereafter			81

Total			$ 189

Change In Accruals Related To Third-Party Claims


(in millions)
Balance at January 1, 2010	$	0
Loss accrued		220
Less: Payments		(6)

Balance at December 31, 2010		214
Additional loss accrued		155
Less: Payments		(92)

Balance at December 31, 2011	$	277

Environmental Remediation Liability Disclosure


(in millions)
Balance at December 31, 2010	$	612
Additional remediation costs accrued:
Transfer to regulatory account for recovery		169
Amounts not recoverable from customers		156
Less: Payments		(152)

Balance at December 31, 2011	$	785

- Definition

The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies.

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- Definition

Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

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- Definition

Tabular disclosure of the activity in the reserve for settling insured claims and expenses incurred in the claims settlement process for the period. The estimated liability includes the amount of money that will be required for future payments of (a) claims that have been reported to the insurer, (b) claims related to insured events that have occurred but that have not been reported to the insurer as of the date the liability is estimated, and (c) claim adjustment expenses. Claim adjustment expenses include costs incurred in the claim settlement process such as legal fees; outside adjuster fees; and costs to record, process, and adjust claims.

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