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Earnings or Loss per Share | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Earnings or Loss per Share | Earnings or Loss per Share Basic earnings or loss per share (EPS) is computed by dividing net earnings or loss by the weighted average number of shares outstanding for the period. Diluted EPS presents the dilutive effect, if any, on a per share basis of potential shares (e.g., options, SARs, RSUs, PSARs and PSUs) as if they had been exercised, vested or converted at the beginning of the periods presented. The details of our basic and diluted weighted average ordinary shares outstanding are set forth below:
|  |  | Three months ended
|  |  | March 31,
|  |  |  |  | 2021 |  | 2020
Weighted average ordinary shares outstanding (basic EPS computation) |  |  |  |  | 575,114,550 |  |  | 630,472,769 |
Incremental shares attributable to the assumed exercise of outstanding options and SARs and the release of RSUs and PSUs upon vesting (treasury stock method) |  |  |  |  | 9,507,525 |  |  | 1,305,793 |
Weighted average ordinary shares outstanding (diluted EPS computation) |  |  |  |  | 584,622,075 |  |  | 631,778,562 |
During the three months ended March 31, 2021 and 2020, a total of 51.6 million and 59.7 million options, SARs and RSUs, respectively, and 16.9 million and 22.2 million PSARs and PSUs, respectively, were excluded from the calculation of diluted earnings per share because their effect would have been anti-dilutive or, in the case of the PSARs and PSUs, because such awards had not yet met the applicable performance criteria.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
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