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Earnings Per Share and Common Stock (Tables) | 3 Months Ended
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Mar. 31, 2025
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 the table below):
| First quarter ended |  |
| March 31, |  |
| 2025 |  | 2024 |  |  |  |
Net income | $ | 344 |  |  | $ | 243 |  |  |  |  |
Less: preferred stock dividends declared | 1 |  |  | 1 |  |  |  |  |
Net income available to Howmet Aerospace common shareholders - basic and diluted | $ | 343 |  |  | $ | 242 |  |  |  |  |
Average shares outstanding - basic | 405 |  |  | 410 |  |  |  |  |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock and performance awards | 2 |  |  | 2 |  |  |  |  |
Average shares outstanding - diluted | 407 |  |  | 412 |  |  |  |  |

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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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