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Net Income Per Share (Notes) | 9 Months Ended
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Sep. 30, 2019
Earnings Per Share [Abstract] |
Net Income Per Share | Net Income Per Share The following table sets forth the computation of Net Income Per Share for the three-month and nine-month periods ended September 30, 2019 and 2018 (in thousands, except per share data):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Numerator for Basic and Diluted Earnings Per Share - |  |  |  |  |  |  |
Net Income | $ | 615,122 |  |  | $ | 1,190,952 |  |  | $ | 2,098,389 |  |  | $ | 2,526,272 |
Denominator for Basic Earnings Per Share - |  |  |  |  |  |  |  |  |  |  |
Weighted Average Shares | 577,839 |  |  | 577,254 |  |  | 577,498 |  |  | 576,431 |
Potential Dilutive Common Shares - |  |  |  |  |  |  |  |  |  |  |
Stock Options/SARs | 203 |  |  | 1,432 |  |  | 371 |  |  | 1,317 |
Restricted Stock/Units and Performance Units | 3,229 |  |  | 2,873 |  |  | 3,321 |  |  | 2,694 |
Denominator for Diluted Earnings Per Share - |  |  |  |  |  |  |  |  |  |  |
Adjusted Diluted Weighted Average Shares | 581,271 |  |  | 581,559 |  |  | 581,190 |  |  | 580,442 |
Net Income Per Share |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 1.06 |  |  | $ | 2.06 |  |  | $ | 3.63 |  |  | $ | 4.38 |
Diluted | $ | 1.06 |  |  | $ | 2.05 |  |  | $ | 3.61 |  |  | $ | 4.35 |
The diluted earnings per share calculation excludes stock options and SARs that were anti-dilutive. Shares underlying the excluded stock options and SARs were 6.8 million and 0.5 million shares for the three months ended September 30, 2019 and 2018, respectively, and were 6.2 million and 0.2 million shares for the nine months ended September 30, 2019 and 2018, respectively.

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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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