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Investments Accounted for Using the Equity Method and Variable Interest Entities, or VIEs (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) project MW | Jun. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Investments Accounted for by the Equity Method |  |  |
Equity investments in affiliates | $ 387 |  | $ 412
Generation capacity (in MW) | MW | 23,000 |  |
Current assets | $ 3 |  | 3
Net property, plant and equipment | 75 |  | 76
Other long-term assets | 27 |  | 28
Total assets | 105 |  | 107
Current liabilities | 1 |  | 2
Long-term debt | 29 |  | 29
Other long-term liabilities | 8 |  | 7
Total liabilities | 38 |  | 38
Redeemable noncontrolling interest | 18 |  | 19
Net assets less noncontrolling interests | 49 |  | $ 50
Agua Caliente |  |  |
Investments Accounted for by the Equity Method |  |  |
Equity investments in affiliates | 201 |  |
Ivampah Master Holdings LLC |  |  |
Investments Accounted for by the Equity Method |  |  |
Equity investments in affiliates | $ 20 |  |
Economic interest in equity method investments (as a percent) | 54.50% |  |
Number of solar electric generating projects | project | 3 |  |
Generation capacity (in MW) | MW | 393 |  |
Release of reserve funds |  | $ (95) |

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