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Changes in Capital Structure | 3 Months Ended
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Mar. 31, 2018
Equity [Abstract] |
Changes in Capital Structure | Changes in Capital Structure As of March 31, 2018 and December 31, 2017, the Company had 500,000,000 shares of common stock authorized. 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 | 1,081,994 |  |  | — |  |  | 1,081,994 |
Shares issued under ESPP | — |  |  | 175,862 |  |  | 175,862 |
Shares repurchased | — |  |  | (3,114,748 | ) |  | (3,114,748 | )
Balance as of March 31, 2018 | 419,405,128 |  |  | (104,518,931 | ) |  | 314,886,197 |
Employee Stock Purchase Plan In January 2018, 175,862 shares of common stock were issued to employee accounts from treasury stock for the offering period of July 1, 2017 to December 31, 2017. In January 2018, NRG suspended the ESPP. Share Repurchases In February 2018, the Company's board of directors authorized the Company to repurchase $1 billion of its common stock, with the first $500 million program beginning as soon as permitted. In March 2018, share repurchases were made as follows:
| Total number of shares purchased |  | Average price paid per share (a) |  | Amounts paid for shares purchased (in millions) (a)
Board Authorized Share Repurchases |  |  |  |  |
March 2018 | 3,114,748 |  |  | $ | 29.75 |  |  | $ | 93 |
(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. NRG Common Stock Dividends The following table lists the dividends paid during the three months ended March 31, 2018:
| First Quarter 2018
Dividends per Common Share | $ | 0.03 |
On April 19, 2018, NRG declared a quarterly dividend on the Company's common stock of $0.03 per share, payable May 15, 2018, to stockholders of record as of May 1, 2018, representing $0.12 per share on an annualized basis. The Company's common stock dividends are subject to available capital, market conditions, and compliance with associated laws, regulations and other contractual obligations.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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