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Net income per share (Tables) | 3 Months Ended
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Mar. 31, 2022
Earnings Per Share [Abstract] |
Basic and Diluted Net Income per Share | The following table presents the calculation of basic and diluted net (loss) income per share:
| Three Months Ended March 31, |
| 2022 |  | 2021 |  |  |
Numerator: |  |  |  |  |  |
Net (loss) income | $ | (3.7) |  |  | $ | 69.7 |  |  |  |
Denominator: |  |  |  |  |  |
Weighted-average number of shares—basic | 50.7 |  |  | 53.3 |  |  |  |
Dilutive securities—equity awards | — |  |  | 1.2 |  |  |  |
Weighted-average number of shares—diluted | 50.7 |  |  | 54.5 |  |  |  |
Net (loss) income per share - basic | $ | (0.07) |  |  | $ | 1.31 |  |  |  |
Net (loss) income per share - diluted | $ | (0.07) |  |  | $ | 1.28 |  |  |  |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | The following table presents the share-based awards that are not considered in the diluted net (loss) income per share calculation generally because the exercise price of the awards was greater than the average per share closing price during the three months ended March 31, 2022 and 2021. In certain instances, awards may be anti-dilutive even if the average market price exceeds the exercise price when the sum of the assumed proceeds exceeds the difference between the market price and the exercise price.
| Three Months Ended March 31, |
| 2022 |  | 2021 |  |  |
Anti-dilutive stock awards | 1.6 |  |  | 0.1 |  |  |  |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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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=124432515&loc=d3e3550-109257 + Details
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