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Net Income Per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Calculations For Basic And Diluted Earnings Per Share | The table shows calculations for basic and diluted earnings per share:
(In millions, except per share data) |  | Years ended December 31,
| 2023 |  | 2022 |  | 2021
Numerator: |  |  |  |  |  |
Net income (loss)—basic and diluted |  | $ | 1,843 |  |  | $ | (487) |  |  | $ | 2,968 |
Denominator: |  |  |  |  |  |
Basic weighted-average common shares outstanding |  | 157.0 |  |  | 158.8 |  |  | 161.0 |
Effect of share-based awards: |  |  |  |  |  |
Stock options |  | 0.7 |  |  | — |  |  | 1.1 |
Nonvested shares |  | 0.4 |  |  | — |  |  | 0.6 |
Diluted weighted-average shares |  | 158.1 |  |  | 158.8 |  |  | 162.7 |
Earnings (loss) per share: |  |  |  |  |  |
Basic |  | $ | 11.74 |  |  | $ | (3.06) |  |  | $ | 18.43 |
Diluted |  | 11.66 |  |  | (3.06) |  |  | 18.24 |
Number of anti-dilutive share-based awards |  | 1.3 |  |  | 2.2 |  |  | 0.8 |

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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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