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Related Party Transactions (Tables) | 9 Months Ended
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Sep. 30, 2019
Related Party Transactions [Abstract] |
Summary of NRG's Material Related Party Transactions | The following table summarizes NRG's material related party transactions with third party affiliates:
| Three months ended September 30, |  |  |  | Nine months ended September 30, |  |
| 2019 |  | 2018 |  | 2019 |  | 2018
| (In millions) |  |  |  |  |  |
Revenues from Related Parties Included in Operating Revenues |  |  |  |  |  |  |
Gladstone | $ | 2 |  |  | $ | 1 |  |  | $ | 3 |  |  | $ | 2 |
GenConn | — |  |  | 1 |  |  | — |  |  | 4 |
Ivanpah | 7 |  |  | 8 |  |  | 25 |  |  | 13 |
Midway-Sunset | 2 |  |  | — |  |  | 4 |  |  | — |
Revenues from Related Parties recorded against selling, general and administrative expenses |  |  |  |  |  |  |
GenOn | — |  |  | 11 |  |  | — |  |  | 53 |
Total | $ | 11 |  |  | $ | 21 |  |  | $ | 32 |  |  | $ | 72 |

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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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