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Net Income Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Net Income Per Share | Net income per share was calculated as follows:
| Three Months Ended March 31, |  |
(in millions, except per share data) | 2021 |  | 2020 |  |  |  |
Net income - basic and diluted | $ | 32.1 |  |  | $ | 37.4 |  |  |  |  |
Weighted-average common shares outstanding:
Basic | 94.2 |  |  | 92.6 |  |  |  |  |
Effect of dilutive securities:
Stock options | 2.1 |  |  | 2.4 |  |  |  |  |
Restricted stock | 0.5 |  |  | 0.5 |  |  |  |  |
2024 Notes | 1.4 |  |  | 1.5 |  |  |  |  |
Diluted | 98.2 |  |  | 97.0 |  |  |  |  |
Net income per share: |  |  |  |  |  |  |
Basic | $ | 0.34 |  |  | $ | 0.40 |  |  |  |  |
Diluted | $ | 0.33 |  |  | $ | 0.39 |  |  |  |  |

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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=6371337&loc=d3e3550-109257 + Details
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