Commitments And Contingencies (Tables)

9 Months Ended

Sep. 30, 2011

Commitments And Contingencies [Abstract]

Schedule Of Undiscounted Future Expected Power Purchase Agreement Payments

(in millions)
2011	$ 539
2012	2,316
2013	2,969
2014	3,333
2015	3,562
Thereafter	55,242
Total	$ 67,961

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

(in millions)
2011	$ 284
2012	630
2013	245
2014	201
2015	189
Thereafter	1,121
Total	$ 2,670

Undiscounted Obligations Under Nuclear Fuel Agreements

(in millions)
2011	$ 36
2012	88
2013	89
2014	130
2015	189
Thereafter	1,050
Total	$ 1,582

Change In Accruals Related To Third Party Claims

(in millions)
Balance at September 30, 2010	$ 220
Less: Payments	(6)
Balance at December 31, 2010	214
Additional costs accrued	155
Less: Payments	(80)
Balance at September 30, 2011	$ 289

Environmental Remediation Liability Disclosure

(in millions)
Balance at December 31, 2010	$ 612
Additional remediation costs accrued:
Transfer to regulatory account for recovery	107
Amounts not recoverable from customers	142
Less: Payments	(98)
Balance at September 30, 2011	$ 763