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Variable Interest Entities, or VIEs (Details) $ in Millions | Nov. 02, 2016 | Mar. 31, 2018 USD ($) facility MW | Dec. 31, 2017 USD ($)
--- | --- | --- | ---
Investments Accounted for by the Equity Method |  |  |
Equity investments in affiliates |  | $ 1,011 | $ 1,038
Generation capacity (in MW) | MW |  | 30,000 |
Deficit restoration obligation |  | $ 81 |
Current assets |  | 171 | 118
Net property, plant and equipment |  | 2,712 | 2,337
Other long-term assets |  | 665 | 658
Total assets |  | 3,548 | 3,113
Current liabilities |  | 111 | 96
Long-term debt |  | 856 | 661
Other long-term liabilities |  | 211 | 209
Total liabilities |  | 1,178 | 966
Redeemable noncontrolling interest |  | 80 | 78
Noncontrolling interests |  | 646 | 507
Net assets less noncontrolling interests |  | 1,644 | $ 1,562
GenConn Energy LLC |  |  |
Investments Accounted for by the Equity Method |  |  |
Equity investments in affiliates |  | $ 100 |
Power generation facilities | facility |  | 2 |
Generation capacity (in MW) | MW |  | 190 |
Economic interest in equity method investments (as a percent) |  | 50.00% |
Sun Edison Utility-Scale Solar and Wind | Mechanically-complete Solar Assets |  |  |
Investments Accounted for by the Equity Method |  |  |
PPA period | 20 years |  |
Equity investments in affiliates |  | $ 338 |

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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=66011266&loc=d3e33918-111571 + Details
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