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Computation of Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2022
Earnings Per Share [Abstract] |
Schedule of basic and diluted earnings per share calculations | The table below sets forth the calculation of basic and diluted income per share for the periods indicated (in thousands, except per share data).
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
|  | 2022 |  | 2021 |  | 2022 |  | 2021
Numerator: |  |  |  |  |  |  |  |
Net income used for calculating basic and diluted income per share |  | $ | 204,925 |  |  | $ | 271,236 |  |  | $ | 377,440 |  |  | $ | 435,336 |
Denominator: |  |  |  |  |  |  |  |
Weighted average common shares used in the calculation of basic income per share |  | 80,271 |  |  | 85,712 |  |  | 81,145 |  | 87,032
Dilutive effect of outstanding awards associated with stock-based compensation plans (1) |  | 703 |  |  | 877 |  |  | 866 |  | 889
Shares used in the calculation of diluted income per share |  | 80,974 |  |  | 86,589 |  |  | 82,011 |  | 87,921
Basic income per share |  | $ | 2.55 |  |  | $ | 3.16 |  |  | $ | 4.65 |  |  | $ | 5.00 |
Diluted income per share |  | $ | 2.53 |  |  | $ | 3.13 |  |  | $ | 4.60 |  |  | $ | 4.95 |
(1)Certain outstanding awards associated with stock-based compensation plans were not included in the computation of diluted income per share because the effect would have been anti-dilutive. These anti-dilutive outstanding awards associated with stock-based compensation plans totaled approximately 0.4 million and 0.1 million for the three months ended June 30, 2022 and 2021, respectively, and 0.3 million and 0.1 million for the six months ended June 30, 2022 and 2021, respectively.

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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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