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Earnings Per Share Level 1 (Notes) | 6 Months Ended
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Jun. 30, 2020
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Earnings Per Share Basic earnings per common share excludes dilution and is computed by dividing Net income attributable to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other obligations to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that participated in our earnings. A reconciliation of the numerators and denominators of basic and diluted earnings per share is presented below:
| Three Months Ended June 30, |  |  | Six Months Ended June 30, |  |  |  |
| 2020 |  | 2019 | 2020 |  | 2019 |  |
| (In thousands, except per share amounts) |  |  |  |  |  |  |
Amounts attributable to common stockholders: |  |  |  |  |  |  |  |
Net income — basic and diluted | $ | 105,508 |  |  | $ | 72,329 |  | $ | 187,449 |  |  | $ | 151,652 |  |  |
Weighted average shares: |  |  |  |  |  |  |  |
Weighted average shares — basic | 177,902 |  |  | 182,369 |  | 179,378 |  |  | 182,048 |  |  |
Stock options | 1,740 |  |  | 3,278 |  | 2,221 |  |  | 3,418 |  |  |
Restricted share units | 24 |  |  | 43 |  | 40 |  |  | 51 |  |  |
Weighted average shares — diluted | $ | 179,666 |  |  | $ | 185,690 |  | $ | 181,639 |  |  | $ | 185,517 |  |  |
Amounts attributable to common stockholders: |  |  |  |  |  |  |  |
Earnings per share: |  |  |  |  |  |  |  |
Basic | $ | 0.59 |  |  | $ | 0.40 |  | $ | 1.04 |  |  | $ | 0.83 |  |  |
Diluted | $ | 0.59 |  |  | $ | 0.39 |  | $ | 1.03 |  |  | $ | 0.82 |  |  |
The computation of diluted earnings per share excludes outstanding stock options and restricted share units in certain periods in which the inclusion of such equity awards would be antidilutive to the periods presented. Total antidilutive options and restricted stock units not currently included in the computation of diluted earnings per share

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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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