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Earnings per Common Share | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Earnings per Common Share | 10. Earnings per Common Share The following table sets forth the computation of basic and diluted earnings per common share for the periods presented (in millions, except per share amounts):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Numerator: |  |  |  |  |  |  |  |
Net income attributable to World Fuel |  | $ | 21.7 |  |  | $ | 82.0 |  |  | $ | 58.2 |  |  | $ | 113.1 |
Denominator: |  |  |  |  |  |  |  |
Weighted average common shares for basic earnings per common share |  | 63.0 |  |  | 63.4 |  |  | 63.1 |  |  | 63.9 |
Effect of dilutive securities |  | 0.3 |  |  | 0.2 |  |  | 0.4 |  |  | 0.3 |
Weighted average common shares for diluted earnings per common share |  | 63.3 |  |  | 63.6 |  |  | 63.6 |  |  | 64.1 |
Basic earnings (loss) per common share |  | $ | 0.34 |  |  | $ | 1.29 |  |  | $ | 0.92 |  |  | $ | 1.77 |
Diluted earnings (loss) per common share |  | $ | 0.34 |  |  | $ | 1.29 |  |  | $ | 0.92 |  |  | $ | 1.76 |
Weighted average securities which are not included in the calculation of diluted earnings per common share because their impact is anti-dilutive or their performance conditions have not been met |  | 0.8 |  |  | 3.3 |  |  | 0.8 |  |  | 2.9 |

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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=124432515&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=124432515&loc=d3e3630-109257 + Details
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