v2.4.0.8

Acquisition (Details) (USD $) | 6 Months Ended |  |  | 3 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2014 MW | Dec. 31, 2013 MW | Jun. 30, 2014 Guadalupe Energy Center [Member] MW | Jun. 30, 2014 Guadalupe Expansion Capacity [Member] MW | Jun. 30, 2014 Incremental CCFC Term Loans [Member] | Jun. 30, 2014 Oneta Energy Center [Member] MW | Jun. 30, 2014 Carville Energy Center [Member] MW | Jun. 30, 2014 Decatur Energy Center [Member] MW | Jun. 30, 2014 Hog Bayou Energy Center [Member] MW | Jun. 30, 2014 Santa Rosa Energy Center [Member] MW | Jun. 30, 2014 Columbia Energy Center [Member] MW | Jun. 30, 2014 Six Power Plants [Member] MW | Sep. 30, 2014 Subsequent Event [Member]
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Assets Held-for-sale, Current | $ 26,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current assets held for sale | 808,000,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of power plants to be disposed of | 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage before divestiture of business | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Sale of Productive Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,570,000,000
Working Capital Adjustment to Sale price |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000
Business Combination, Contingent Consideration, Liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,000,000
Power generation capacity | 10,365 | 9,427 | 1,000 | 400 |  | 1,134 | 501 | [1] | 795 | 237 | 225 | 606 | [1] | 3,498 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |  |  | 625,000,000 | 15,000,000 |  |  |  |  |  |  |  |  |  |  |
Number of 525 MW generation blocks to be acquired in the Guadalupe acquisition | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | 425,000,000 |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 750,000,000
Assets Held-for-sale, Property, Plant and Equipment | 769,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Held-for-sale, Other, Noncurrent | 13,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities held for sale | $ 9,000,000 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Indicates combined-cycle cogeneration power plant.

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