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Net Income Per Share (Tables) | 9 Months Ended
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Sep. 30, 2022
Earnings Per Share [Abstract] |
Summary of Denominators for The Computation of Basic and Diluted Earnings Per Share | The following table sets forth the calculation of basic and diluted net income per share:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In millions, except net income per share)
Numerator: |  |  |  |  |  |  |
Net income | $ | 230 |  |  | $ | 143 |  |  | $ | 736 |  |  | $ | 556 |
Denominator: |  |  |  |  |  |  |
Shares outstanding at the beginning of the period | 57.6 |  |  | 57.8 |  |  | 57.9 |  |  | 58.0 |
Weighted-average number of shares issued: |  |  |  |  |  |  |
Stock-based compensation | — |  |  | — |  |  | 0.2 |  |  | 0.3 |
Stock purchases | — |  |  | — |  |  | (0.3) |  |  | (0.5) |
Denominator for basic net income per share | 57.6 |  |  | 57.8 |  |  | 57.8 |  |  | 57.8 |
Effect of dilutive securities: (1) |  |  |  |  |  |  |
Stock-based compensation | 0.7 |  |  | 0.7 |  |  | 0.7 |  |  | 0.7 |
Denominator for diluted net income per share | 58.3 |  |  | 58.5 |  |  | 58.5 |  |  | 58.5 |
Net income per share - Basic (2) | $ | 4.00 |  |  | $ | 2.49 |  |  | $ | 12.74 |  |  | $ | 9.63 |
Net income per share - Diluted (2) | $ | 3.95 |  |  | $ | 2.46 |  |  | $ | 12.58 |  |  | $ | 9.51 |
______________________________ (1) The dilutive effect of all potentially dilutive common shares is calculated using the treasury stock method. (2) Source data for calculations in thousands.

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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 https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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