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Earnings Per Share | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Earnings Per Share | EARNINGS PER SHARE Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding for the period, including vested RSU awards. Diluted EPS is computed by dividing net income by the weighted average number of shares outstanding, noted above, adjusted for the dilutive effect of stock options and unvested RSU awards. The following table presents the calculation of basic and diluted EPS:
| 2021 |  | 2020 |  | 2019
Net income from continuing operations | $ | 1,373.3 |  |  | $ | 381.8 |  |  | $ | 450.8 |
Loss from discontinued operations, net of income taxes | (0.3) |  |  | (0.2) |  |  | (0.8) |
Net income | $ | 1,373.0 |  |  | $ | 381.6 |  |  | $ | 450.0 |
Basic weighted average common shares outstanding | 74.2 |  |  | 88.3 |  |  | 90.1 |
Dilutive effect of stock options and unvested RSUs | 0.8 |  |  | 0.4 |  |  | 0.4 |
Diluted weighted average common shares outstanding | 75.0 |  |  | 88.7 |  |  | 90.5 |
Basic EPS amounts(1): |  |  |  |  |
Continuing operations | $ | 18.51 |  |  | $ | 4.32 |  |  | $ | 5.00 |
Discontinued operations | $ | — |  |  | $ | — |  |  | $ | (0.01) |
Net income | $ | 18.50 |  |  | $ | 4.32 |  |  | $ | 4.99 |
Diluted EPS amounts(1): |  |  |  |  |
Continuing operations | $ | 18.31 |  |  | $ | 4.30 |  |  | $ | 4.98 |
Discontinued operations | $ | — |  |  | $ | — |  |  | $ | (0.01) |
Net income | $ | 18.31 |  |  | $ | 4.30 |  |  | $ | 4.97 |
(1) EPS amounts are calculated discretely and, therefore, may not add up to the total due to rounding.
A summary of anti-dilutive equity instruments excluded from the computation of diluted EPS is as follows:
| 2021 |  | 2020 |  | 2019
Anti-dilutive equity instruments excluded from the computation of diluted EPS | — |  |  | 1.7 |  |  | 2.4 |

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