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Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2018
Related Party Transactions [Abstract] |
Summary of NRG's material related-party transactions with affiliates | The following table summarizes NRG's material related party transactions with third party affiliates:
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
| (In millions)
Revenues from Related Parties Included in Operating Revenues |  |  |  |  |
Gladstone | $ | 3 |  |  | $ | 3 |  |  | $ | 2 |
GenConn | 4 |  |  | 5 |  |  | 5 |
Ivanpah | 20 |  |  | — |  |  | — |
Midway-Sunset | 5 |  |  | — |  |  | — |
Total | $ | 32 |  |  | $ | 8 |  |  | $ | 7 |

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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