v2.4.0.8

Variable Interest Entities and Unconsolidated Investments (VIE Textuals) (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 MW | Dec. 31, 2012 MW | Dec. 31, 2011
Schedule of Equity Method Investments [Line Items] |  |  |
Power generation capacity | 9,027 | 8,255 |
Variable Interest Entity, Financial or Other Support, Amount | $ 0 | $ 20,000,000 | $ 87,000,000
Equity Method Investment, Summarized Financial Information, Debt | 395,000,000 | 448,000,000 |
Prorata Share of Equity Method Investment, Summarized Financial Information, Debt | $ 198,000,000 | $ 224,000,000 |
Russell City Energy [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Minority Interest Ownership Percentage By Noncontrolling Third Party Owners | 25.00% |  |
Equity Method Investment, Ownership Percentage | 75.00% |  |
Inland Empire Energy Center [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Power generation capacity | 775 |  |
Put Option Exercise Period | 2,025 |  |
Minimum [Member] | Inland Empire Energy Center [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Call Option Exercise Period | 2,017 |  |
Maximum [Member] | Inland Empire Energy Center [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Call Option Exercise Period | 2,024 |  |
Greenfield [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Power generation capacity | 1,038 |  |
Equity Method Investment, Ownership Percentage | 50.00% |  |
Whitby [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Power generation capacity | 50 |  |
Equity Method Investment, Ownership Percentage | 50.00% |  |

X
- Definition Call Option Exercise Period + References No definition available. + Details
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- Definition Equity Method Investment, Summarized Financial Information, Debt + References No definition available. + Details
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- Definition Minority Interest Ownership Percentage By Noncontrolling Third Party Owners + References No definition available. + Details
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- Definition Power generation capacity + References No definition available. + Details
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- Definition Prorata Share of Equity Method Investment, Summarized Financial Information, Debt + References No definition available. + Details
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- Definition Put Option Exercise Period + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Details
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- Definition The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28200181&loc=SL6759159-111685 + Details
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