v3.22.1

Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2022
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The share information used to compute basic and diluted EPS attributable to Arconic common stockholders was as follows (shares in millions):
First quarter ended March 31, |  | 2022 |  | 2021 |  |  |  |
Weighted-average shares outstanding – basic |  | 105.4 |  |  | 109.8 |  |  |  |  |
Effect of dilutive share equivalents: |  |  |  |  |  |  |  |
Stock units |  | 3.0 |  |  | 3.3 |  |  |  |  |
Stock options |  | 0.1 |  |  | 0.1 |  |  |  |  |
Weighted-average shares outstanding – diluted |  | 108.5 |  |  | 113.2 |  |  |  |  |
Anti-dilutive share equivalents: |  |  |  |  |  |  |  |
Stock units |  | — |  |  | — |  |  |  |  |
Stock options*: |  |  |  |  |  |  |  |
In-the-money |  | — |  |  | — |  |  |  |  |
Out-of-the-money |  | — |  |  | — |  |  |  |  |
|  | — |  |  | — |  |  |  |  |

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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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