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Net Income Per Share | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share [Abstract] |
NET INCOME PER SHARE | NET INCOME PER SHARE Basic and diluted net income per share are calculated using the treasury stock method.
| 2022 |  | 2021 |  | 2020
Basic |  |  |  |  |
Net income | $ | 2,020.1 |  |  | $ | 1,864.4 |  |  | $ | 2,030.4 |
Average shares outstanding | 258.0 |  |  | 262.5 |  |  | 271.3 |
Basic net income per share | $ | 7.83 |  |  | $ | 7.10 |  |  | $ | 7.48 |
Diluted |  |  |  |  |
Net income | $ | 2,020.1 |  |  | $ | 1,864.4 |  |  | $ | 2,030.4 |
Average shares outstanding assuming dilution: |  |  |  |  |
Average shares outstanding | 258.0 |  |  | 262.5 |  |  | 271.3 |
Stock options and other contingently issuable shares (1) | 3.8 |  |  | 4.6 |  |  | 4.5 |
Average shares outstanding assuming dilution | 261.8 |  |  | 267.1 |  |  | 275.8 |
Diluted net income per share | $ | 7.72 |  |  | $ | 6.98 |  |  | $ | 7.36 |
(1) Stock options and other contingently issuable shares excludes 1.9 million, 0.9 million and 1.0 million shares at December 31, 2022, 2021 and 2020, respectively, due to their anti-dilutive effect.

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