v2.4.0.6

Acquisitions, Divestitures and Discontinued Operations (Details) (USD $) | 12 Months Ended |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 08, 2010 | Jul. 02, 2010 | Dec. 31, 2011 Conectiv [Member] | Mar. 02, 2011 Conectiv [Member]
Business Acquisition, Purchase Price Allocation [Abstract] |  |  |  |  |  |
Consideration |  |  |  | $ 1,640,000,000 |  |
Assets: |  |  |  |  |  |
Current assets |  |  |  | 78,000,000 |  |
Property, plant and equipment, net |  |  |  | 1,574,000,000 |  |
Other long-term assets |  |  |  | 85,000,000 |  |
Total assets acquired |  |  |  | 1,737,000,000 |  |
Liabilities: |  |  |  |  |  |
Current liabilities |  |  |  | 46,000,000 |  |
Long-term liabilities |  |  |  | 51,000,000 |  |
Total liabilities assumed |  |  | 85,000,000 | 97,000,000 |  |
Net assets acquired |  |  |  | 1,640,000,000 |  |
Number of Power Plants Acquired |  |  |  | 18 |  |
Power generation capacity | 11,391 | 13,656 |  |  |  | 4,491
Cap on Environmental Remediation Liabilities Acquired |  |  |  | 10,000,000 |  |
Number of Employees Acquired In Acquisition |  |  |  | 130 |  |
Number Of Employees For Which Pension Obligation Was Reduced |  |  |  | 31 |  |
Proceeds from Subsidiary Project Debt |  |  |  | 1,300,000,000 |  |
Variable Interest Entity, Financial or Other Support, Amount | $ 171,000,000 | $ 46,000,000 |  |  | $ 110,000,000 |

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