v3.19.1

Variable Interest Entities and Unconsolidated Investments (Unconsolidated Investements) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Loss from Unconsolidated Investments in Power Plants and Distributions [Line Items] |  |  |
(Income) from unconsolidated subsidiaries | $ (24) | $ (22) | $ (24)
Distributions from Equity Method Investments | 53 | 28 | 21
Greenfield [Member] |  |  |
Income Loss from Unconsolidated Investments in Power Plants and Distributions [Line Items] |  |  |
(Income) from unconsolidated subsidiaries | (11) | (14) | (10)
Distributions from Equity Method Investments | 48 | 8 | 8
Whitby [Member] |  |  |
Income Loss from Unconsolidated Investments in Power Plants and Distributions [Line Items] |  |  |
(Income) from unconsolidated subsidiaries | (15) | (10) | (14)
Distributions from Equity Method Investments | 5 | 20 | 13
Calpine Receivables [Member] |  |  |
Income Loss from Unconsolidated Investments in Power Plants and Distributions [Line Items] |  |  |
(Income) from unconsolidated subsidiaries | 2 | 2 | 0
Distributions from Equity Method Investments | $ 0 | $ 0 | $ 0

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