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Earnings per Common Share | 3 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Earnings per Common Share | 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):
|  | For the Three Months Ended
|  | March 31,
|  | 2018 |  | 2017
Numerator: |  |  |  |
Net income attributable to World Fuel |  | $ | 31.2 |  |  | $ | 31.3 |
Denominator: |  |  |  |
Weighted average common shares for basic earnings per common share |  | 67.5 |  |  | 68.7 |
Effect of dilutive securities |  | 0.4 |  |  | 0.4 |
Weighted average common shares for diluted earnings per common share |  | 67.9 |  |  | 69.2 |
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 |  | 1.3 |  |  | 0.6 |
Basic earnings per common share |  | $ | 0.46 |  |  | $ | 0.46 |
Diluted earnings per common share |  | $ | 0.46 |  |  | $ | 0.45 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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