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Earnings per Share | 9 Months Ended
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Sep. 30, 2019
Earnings Per Share [Abstract] |
Earnings per Share |
8. | Earnings Per Share
The following table sets forth the computation of basic and diluted net earnings per share (in millions, except per share data):
|  | Three-month period ended September 30, |  |  | Nine-month period ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Net earnings attributable to controlling interests |  | $ | 126.1 |  |  | $ | 127.6 |  |  | $ | 570.3 |  |  | $ | 516.2 |
Weighted average number of common shares outstanding |  |  | 186.3 |  |  |  | 183.3 |  |  |  | 185.5 |  |  |  | 182.4 |
Dilutive effect of stock options using the treasury stock method |  |  | 4.4 |  |  |  | 3.5 |  |  |  | 4.1 |  |  |  | 3.3 |
Weighted average number of common and common equivalent shares outstanding |  |  | 190.7 |  |  |  | 186.8 |  |  |  | 189.6 |  |  |  | 185.7 |
Basic net earnings per share |  | $ | 0.68 |  |  | $ | 0.70 |  |  | $ | 3.07 |  |  | $ | 2.83 |
Diluted net earnings per share |  | $ | 0.66 |  |  | $ | 0.68 |  |  | $ | 3.01 |  |  | $ | 2.78 |
Anti-dilutive stock-based awards of 1.3 million shares were outstanding at September 30, 2018, but were excluded in the computation of the dilutive effect of stock-based awards for the three-month periods then ended. There were no​​​​​​​ anti-dilutive stock-based award s outstanding at September 30, 2019 that were excluded in the computation of the dilutive effect of stock-based awards for the three-month periods then ended. Anti-dilutive stock-based awards of 0.9 million and 0.9 million shares were outstanding at September 30, 2019 and 2018, respectively, but were excluded in the computation of the dilutive effect of stock-based awards for the nine-month periods then ended. These stock-based awards were excluded from the computation because the exercise prices on these stock-based awards were greater than the average market price of our common shares during the respective period, and therefore, would be anti-dilutive to earnings per share under the treasury stock method.

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