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NET INCOME PER COMMON SHARE | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share [Abstract] |
NET INCOME PER COMMON SHARE | NET INCOME PER COMMON SHARE Net income per common share was computed as follows:
(In millions, except per share amounts) |  | 2022 |  | 2021 |  | 2020
(A) Net income |  | $ | 757.1 |  |  | $ | 740.1 |  |  | $ | 555.9 |
(B) Weighted average number of common shares outstanding |  | 81.6 |  |  | 82.9 |  |  | 83.4 |
Dilutive shares (additional common shares issuable under stock-based awards) |  | .6 |  |  | .9 |  |  | .7 |
(C) Weighted average number of common shares outstanding, assuming dilution |  | 82.2 |  |  | 83.8 |  |  | 84.1 |
Net income per common share (A) ÷ (B) |  | $ | 9.28 |  |  | $ | 8.93 |  |  | $ | 6.67 |
Net income per common share, assuming dilution (A) ÷ (C) |  | $ | 9.21 |  |  | $ | 8.83 |  |  | $ | 6.61 |
Certain stock-based compensation awards were excluded from the computation of net income per common share, assuming dilution, because they would not have had a dilutive effect. Stock-based compensation awards excluded from the computation were not significant in 2022, 2021 or 2020.

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