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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Summary of Basic and Diluted Earnings Per Share | The following table summarizes basic and diluted earnings per share (EPS). Basic EPS excludes all potentially dilutive securities and is computed by dividing net income attributable to Crown Holdings by the weighted average number of common shares outstanding during the period. Diluted EPS includes the effect of stock options and restricted stock as calculated under the treasury stock method.
| 2017 |  | 2016 |  | 2015
Net income attributable to Crown Holdings | $ | 323 |  |  | $ | 496 |  |  | $ | 393 |
Weighted average shares outstanding (in millions): |  |  |  |  |
Basic | 135.29 |  |  | 138.53 |  |  | 137.94 |
Add: dilutive stock options and restricted stock | 0.32 |  |  | 0.78 |  |  | 1.20 |
Diluted | 135.61 |  |  | 139.31 |  |  | 139.14 |
Basic EPS | $ | 2.39 |  |  | $ | 3.58 |  |  | $ | 2.85 |
Diluted EPS | $ | 2.38 |  |  | $ | 3.56 |  |  | $ | 2.82 |
Contingently issuable shares excluded from the computation of diluted earnings per share because the effect would have been anti-dilutive | — |  |  | 0.5 |  |  | 0.1 |

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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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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