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Changes in Capital Structure (Tables) | 6 Months Ended
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Jun. 30, 2018
Equity [Abstract] |
Changes in NRG's common shares issued and outstanding | The following table reflects the changes in NRG's common stock issued and outstanding:
| Issued |  | Treasury |  | Outstanding
Balance as of December 31, 2017 | 418,323,134 |  |  | (101,580,045 | ) |  | 316,743,089 |
Shares issued under LTIPs | 1,373,655 |  |  | — |  |  | 1,373,655 |
Shares issued under ESPP | — |  |  | 175,862 |  |  | 175,862 |
Shares repurchased | — |  |  | (14,863,301 | ) |  | (14,863,301 | )
Balance as of June 30, 2018 | 419,696,789 |  |  | (116,267,484 | ) |  | 303,429,305 |
Shares Repurchased | The following repurchases have been made during the six months ended June 30, 2018.
| Total number of shares purchased |  | Average price paid per share (a) |  | Amounts paid for shares purchased (in millions) (a)
Board Authorized Share Repurchases |  |  |  |  |
First Quarter 2018 | 3,114,748 |  |  |  |  | $ | 93 |
Second Quarter 2018 (b) | 11,748,553 |  |  |  |  | 407 |
Total Board Authorized Share Repurchases as of June 30, 2018 | 14,863,301 |  |  |  |  | $ | 500 |
July 2018 | 860,880 |  |  |  |  | — |
Total Board Authorized Share Repurchases as of August 2, 2018 | 15,724,181 |  |  | $ | 31.80 |  |  | $ | 500 |
(a) The average price paid per share and amounts paid for shares purchased exclude the commissions of $0.01 per share paid in connection with the share repurchase. (b) The share repurchases for the second quarter include 9,969,023 of the shares repurchased through the ASR Agreement, as described below.
Schedule of dividends paid | The following table lists the dividends paid during the six months ended June 30, 2018:
| Second Quarter 2018 |  | First Quarter 2018
Dividends per Common Share | $ | 0.03 |  |  | $ | 0.03 |

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