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Earnings Per Share and Common Stock (Tables) | 3 Months Ended
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Mar. 31, 2023
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Information Used to Compute Basic and Diluted EPS | The information used to compute basic and diluted EPS attributable to Howmet common shareholders was as follows (shares in millions in table below):
| First quarter ended |  |
| March 31, |  |
| 2023 |  | 2022 |  |  |  |
Net income attributable to common shareholders | $ | 148 |  |  | $ | 131 |  |  |  |  |
Less: preferred stock dividends declared | 1 |  |  | 1 |  |  |  |  |
Net income available to Howmet Aerospace common shareholders - basic and diluted | $ | 147 |  |  | $ | 130 |  |  |  |  |
Average shares outstanding - basic | 412 |  |  | 419 |  |  |  |  |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock and performance awards | 6 |  |  | 6 |  |  |  |  |
Average shares outstanding - diluted | 418 |  |  | 425 |  |  |  |  |

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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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