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Earnings Per Share Earnings Per Share (Notes) | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Earnings Per Share The following chart sets forth the computation of earnings per share (in thousands, except per share amounts):
| Three Months Ended
| March 31,
| 2019 |  | 2018
Net income | $ | 99,063 |  |  | $ | 152,763 |
Denominator for basic earnings per share—Weighted-average shares outstanding | 315,046 |  |  | 309,517 |
Effect of dilutive securities: |  |  |
RSUs | 414 |  |  | 619 |
PSUs | — |  |  | — |
Stock options | 558 |  |  | 1,211 |
Denominator for diluted earnings per share—Adjusted weighted-average shares outstanding | 316,018 |  |  | 311,347 |
Earnings per share, basic | $ | 0.31 |  |  | $ | 0.49 |
Earnings per share, diluted | $ | 0.31 |  |  | $ | 0.49 |
The following table sets forth the number of employee stock-based compensation awards outstanding but not included in the computation of diluted earnings per share because their effect would have been antidilutive for the three months ended March 31, 2019 and 2018 (in thousands):
| Three Months Ended
| March 31,
| 2019 |  | 2018
Antidilutive securities: |  |  |
RSUs | 599 |  |  | — |
Stock options | 32 |  |  | — |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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