v2.4.0.8

Acquisition (Details) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2014 MW | Sep. 30, 2013 | Sep. 30, 2014 MW | Sep. 30, 2013 | Dec. 31, 2013 MW
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of power plants to be disposed of | 6 |  |  |  |  |  |
Ownership percentage before divestiture of business | 100.00% |  |  | 100.00% |  |  |
Working Capital Adjustment to Sale price | $ 2,000,000 |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability | 16,000,000 |  |  | 16,000,000 |  |  |
Gain (Loss) on Disposition of Assets | 753,000,000 |  | 0 | 753,000,000 |  | 0 |
Power generation capacity | 10,365 |  |  | 10,365 |  |  | 9,427
Fore River Energy Center [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Power generation capacity | 809 |  |  | 809 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | 530,000,000 |  |  | 530,000,000 |  |  |
Guadalupe Energy Center [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Power generation capacity | 1,050 |  |  | 1,050 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | 625,000,000 |  |  | 625,000,000 |  |  |
Guadalupe Expansion Capacity [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Power generation capacity | 400 |  |  | 400 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net | 15,000,000 |  |  | 15,000,000 |  |  |
Incremental CCFC Term Loans [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount | 425,000,000 |  |  | 425,000,000 |  |  |
Oneta Energy Center [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Power generation capacity | 1,134 |  |  | 1,134 |  |  |
Carville Energy Center [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Power generation capacity | 501 | [1] |  | 501 | [1] |  |
Decatur Energy Center [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Power generation capacity | 795 |  |  | 795 |  |  |
Hog Bayou Energy Center [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Power generation capacity | 237 |  |  | 237 |  |  |
Santa Rosa Energy Center [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Power generation capacity | 225 |  |  | 225 |  |  |
Columbia Energy Center [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Power generation capacity | 606 | [1] |  | 606 | [1] |  |
Six Power Plants [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Proceeds from Sale of Productive Assets | $ 1,570,000,000 |  |  |  |  |  |
Power generation capacity | 3,498 |  |  | 3,498 |  |  |
[1] | Indicates combined-cycle cogeneration power plant.

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