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Net Income Per Common Share Computations | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Net Income Per Common Share Computations | NET INCOME PER COMMON SHARE COMPUTATIONSThe following is a reconciliation of the numerator and denominator of the net income per common share computations:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(in millions, except per share data) | 2021 |  | 2020 |  | 2021 |  | 2020
Numerator for basic net income (loss) per common share: |  |  |  |  |  |  |
Net income (loss) from continuing operations | $ | 61.4 |  |  | $ | 43.1 |  |  | $ | 205.8 |  |  | $ | (3.1) |
Net loss attributable to noncontrolling interest | — |  |  | (0.1) |  |  | — |  |  | (0.2) |
Net income (loss) from continuing operations, net of loss attributable to noncontrolling interests | 61.4 |  |  | 43.2 |  |  | 205.8 |  |  | (2.9) |
Net loss from discontinued operations | — |  |  | — |  |  | — |  |  | (96.1) |
Numerator for basic net income (loss) per common share | $ | 61.4 |  |  | $ | 43.2 |  |  | $ | 205.8 |  |  | $ | (99.0) |
Numerator for diluted net income (loss) from continuing operations per common share | $ | 61.4 |  |  | $ | 43.2 |  |  | $ | 205.8 |  |  | $ | (2.9) |
Numerator for diluted net income (loss) per common share | $ | 61.4 |  |  | $ | 43.2 |  |  | $ | 205.8 |  |  | $ | (99.0) |
Denominator for net income (loss) per common share: |  |  |  |  |  |  |
Basic | 38.6 |  |  | 39.5 |  |  | 38.7 |  |  | 39.6 |
Plus dilutive effect of stock awards | 0.6 |  |  | 0.6 |  |  | 0.6 |  |  | — |
Diluted | 39.2 |  |  | 40.1 |  |  | 39.3 |  |  | 39.6 |
Net income (loss) per common share data: |  |  |  |  |  |  |
Basic |  |  |  |  |  |  |
Continuing operations | $ | 1.59 |  |  | $ | 1.09 |  |  | $ | 5.31 |  |  | $ | (0.07) |
Discontinued operations | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (2.43) |
Net income (loss) per common share - basic | $ | 1.59 |  |  | $ | 1.09 |  |  | $ | 5.31 |  |  | $ | (2.50) |
Diluted |  |  |  |  |  |  |
Continuing operations | $ | 1.57 |  |  | $ | 1.08 |  |  | $ | 5.23 |  |  | $ | (0.07) |
Discontinued operations | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (2.43) |
Net income (loss) per common share - diluted | $ | 1.57 |  |  | $ | 1.08 |  |  | $ | 5.23 |  |  | $ | (2.50) |
Anti-dilutive stock awards excluded from the calculation of diluted shares | — |  |  | — |  |  | — |  |  | 0.6 |

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