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Earnings Per Share | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] |
Earnings Per Share | Earnings Per Share Basic earnings per share (EPS) is calculated using the weighted average number of common shares outstanding during the period and includes the effect of any participating securities as appropriate. Participating securities consist of unvested restricted stock issued to our employees and non-employee directors that provide dividend rights. Diluted EPS is calculated assuming the issuance of common shares for all potentially dilutive securities, provided the effect is not antidilutive. For all periods presented, our convertible senior notes did not have a dilutive effect and, therefore, were excluded from the calculation of diluted EPS. Shares of common stock for the following securities were excluded from the calculation of diluted EPS as the effect was antidilutive:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
| (in millions)
Common stock equivalent of our preferred stock outstanding | 60 |  |  | 60 |  |  | 60 |  |  | 60 |
Common stock equivalent of our convertible senior notes outstanding | 146 |  |  | 146 |  |  | 146 |  |  | 146 |
Participating securities | 1 |  |  | 1 |  |  | 1 |  |  | 1 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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