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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Computation Of Earnings Per Share | The following chart sets forth the computation of earnings per share (in thousands, except per share amounts):
| Year Ended December 31,
| 2015 |  | 2014 |  | 2013
Net Income | $ | 423,223 |  |  | $ | 381,519 |  |  | $ | 311,623 |
Denominator for basic earnings per share—Weighted-average shares outstanding | 304,722 |  |  | 302,343 |  |  | 299,574 |
Effect of dilutive securities: |  |  |  |  |
RSUs | 667 |  |  | 791 |  |  | 845 |
Stock options | 2,107 |  |  | 2,905 |  |  | 3,696 |
Restricted stock | — |  |  | 6 |  |  | 16 |
Denominator for diluted earnings per share—Adjusted weighted-average shares outstanding | 307,496 |  |  | 306,045 |  |  | 304,131 |
Earnings per share, basic | $ | 1.39 |  |  | $ | 1.26 |  |  | $ | 1.04 |
Earnings per share, diluted | $ | 1.38 |  |  | $ | 1.25 |  |  | $ | 1.02 |
Schedule Of Antidilutive Securities Excluded From Computation Of Diluted Earnings Per Share | 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 (in thousands):
| Year Ended December 31,
| 2015 |  | 2014 |  | 2013
Antidilutive securities: |  |  |  |  |
RSUs | 230 |  |  | 289 |  |  | — |
Stock options | 96 |  |  | 116 |  |  | — |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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