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EARNINGS PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share |
Computation of basic and diluted earnings per share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended | ​ | For the Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020
Numerator (basic and diluted): |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Net income | ​ | $ | 558,652 | ​ | $ | 527,252 | ​ | $ | 1,645,712 | ​ | $ | 1,359,357
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Weighted-average common shares outstanding – basic | ​ |  | 68,608 | ​ |  | 73,916 | ​ |  | 69,529 | ​ |  | 74,377
Effect of stock options (1) | ​ |  | 632 | ​ |  | 670 | ​ |  | 645 | ​ |  | 649
Weighted-average common shares outstanding – assuming dilution | ​ |  | 69,240 | ​ |  | 74,586 | ​ |  | 70,174 | ​ |  | 75,026
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Earnings per share: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Earnings per share-basic | ​ | $ | 8.14 | ​ | $ | 7.13 | ​ | $ | 23.67 | ​ | $ | 18.28
Earnings per share-assuming dilution | ​ | $ | 8.07 | ​ | $ | 7.07 | ​ | $ | 23.45 | ​ | $ | 18.12
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Antidilutive potential common shares not included in the calculation of diluted earnings per share: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Stock options (1) | ​ |  | 133 | ​ |  | 153 | ​ |  | 48 | ​ |  | 327
Weighted-average exercise price per share of antidilutive stock options (1) | ​ | $ | 467.03 | ​ | $ | 409.07 | ​ | $ | 502.49 | ​ | $ | 384.43
(1) | See Note 11 for further information concerning the terms of the Company’s share-based compensation plans.
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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 http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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