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Net Income Per Share (Tables) | 12 Months Ended
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Jan. 31, 2022
Earnings Per Share [Abstract] |
Schedule of Calculation of Numerator and Denominator in Net Loss Per Share | The following table sets forth the computation of the numerators and denominators used in the basic and diluted net income per share amounts:
| Fiscal Year Ended January 31,
| 2022 |  | 2021 |  | 2020
Numerator: |  |  |  |  |
Net income | $ | 497.0 |  |  | $ | 1,208.2 |  |  | $ | 214.5 |
Denominator: |  |  |  |  |
Weighted average shares for basic net income per share | 219.7 |  |  | 219.4 |  |  | 219.7 |
Effect of dilutive securities | 2.3 |  |  | 2.7 |  |  | 2.8 |
Weighted average shares for dilutive net income per share | 222.0 |  |  | 222.1 |  |  | 222.5 |
Basic net income per share | $ | 2.26 |  |  | $ | 5.51 |  |  | $ | 0.98 |
Diluted net income per share | $ | 2.24 |  |  | $ | 5.44 |  |  | $ | 0.96 |

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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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